This guide explores integrating LLMs into applications, focusing on both client-side and server-side approaches, with a special emphasis on running them within a web browser using WebGPU. Each method presents distinct trade-offs in terms of performance, cost, privacy, and complexity.
Client-Side LLMs with WebGPU
Running LLMs directly in the browser offers significant advantages in terms of privacy, cost, and accessibility. This is achieved through WebGPU, a web standard that allows web applications to tap into a user's GPU for accelerated computing.
Running LLMs directly in the browser offers significant advantages in terms of privacy, cost, and accessibility. This is achieved through WebGPU, a web standard that allows web applications to tap into a user's GPU for accelerated computing.
How it Works
WebLLM is a library that leverages WebGPU to enable LLMs to run entirely within a user's web browser. This means all processing happens locally on the user's device, eliminating the need for remote servers for inference.
WebLLM is a library that leverages WebGPU to enable LLMs to run entirely within a user's web browser. This means all processing happens locally on the user's device, eliminating the need for remote servers for inference.
Advantages
- Enhanced Privacy: User data never leaves the device, ensuring conversations and interactions remain 100% private.
- Offline Functionality: Once the model is loaded, the application can function without an internet connection.
- Reduced Server Costs: Eliminates the need for expensive inference servers, significantly cutting operational expenses.
- Increased Accessibility: Lowers the barrier for deploying powerful AI applications, making them widely available to users.
- Enhanced Privacy: User data never leaves the device, ensuring conversations and interactions remain 100% private.
- Offline Functionality: Once the model is loaded, the application can function without an internet connection.
- Reduced Server Costs: Eliminates the need for expensive inference servers, significantly cutting operational expenses.
- Increased Accessibility: Lowers the barrier for deploying powerful AI applications, making them widely available to users.
Implementation Considerations
- Initial Model Download: LLMs are large (e.g., ~3GB), so users will need to download the model once. Provide clear loading indicators during this process.
- Device Compatibility: While WebGPU support is becoming more widespread in modern browsers (Chrome, Edge, Firefox Nightly) and devices, performance depends on the user's hardware, especially their GPU. Smaller models offer broader compatibility.
- Bundle Size: LLMs significantly increase the application's overall size, which might impact deployment limits on some platforms.
- Responsiveness: Use Web Workers (e.g.,
WebWorkerMLCEngine in WebLLM) to prevent heavy computations from blocking the main UI thread, keeping your application responsive.
- Initial Model Download: LLMs are large (e.g., ~3GB), so users will need to download the model once. Provide clear loading indicators during this process.
- Device Compatibility: While WebGPU support is becoming more widespread in modern browsers (Chrome, Edge, Firefox Nightly) and devices, performance depends on the user's hardware, especially their GPU. Smaller models offer broader compatibility.
- Bundle Size: LLMs significantly increase the application's overall size, which might impact deployment limits on some platforms.
- Responsiveness: Use Web Workers (e.g.,
WebWorkerMLCEnginein WebLLM) to prevent heavy computations from blocking the main UI thread, keeping your application responsive.
Example Use Cases
- Personalized Chatbots: Instant, private assistance without network latency.
- Offline Document Summarizers: Summarize texts without an internet connection.
- Creative Writing Assistants: Generate ideas or complete sentences locally.
- Educational AI Tools: Provide explanations or practice questions directly in the browser.
- Personalized Chatbots: Instant, private assistance without network latency.
- Offline Document Summarizers: Summarize texts without an internet connection.
- Creative Writing Assistants: Generate ideas or complete sentences locally.
- Educational AI Tools: Provide explanations or practice questions directly in the browser.
Integrating WebLLM with Replit
Replit's web-based environment is an ideal host for WebLLM due to its web compatibility and support for client-side technologies.
Replit's web-based environment is an ideal host for WebLLM due to its web compatibility and support for client-side technologies.
Steps to Implement
- Create a Web Project: Start with a suitable Replit web template (e.g., HTML, CSS, JS; Node.js, React, Vue).
- Install WebLLM:
- NPM (Recommended): In your Replit shell, run
npm install @mlc-ai/web-llm @langchain/community @langchain/core. Then, import: import * as webllm from "@mlc-ai/web-llm";
- CDN (Simple Projects): Include in your HTML:
HTML<span class="hljs-tag" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(87, 91, 95); clear: none; clip: auto; color: #575b5f; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(87, 91, 95) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;"><<span class="hljs-name" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(217, 48, 37); clear: none; clip: auto; color: #d93025; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(217, 48, 37) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">script</span> <span class="hljs-attr" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(181, 89, 8); clear: none; clip: auto; color: #b55908; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(181, 89, 8) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">type</span>=<span class="hljs-string" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(24, 128, 56); clear: none; clip: auto; color: #188038; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(24, 128, 56) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">"module"</span>></span><span class="javascript" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(87, 91, 95); clear: none; clip: auto; color: #575b5f; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(87, 91, 95) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">
<span class="hljs-keyword" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(132, 48, 206); clear: none; clip: auto; color: #8430ce; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(132, 48, 206) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">import</span> { init, chat } <span class="hljs-keyword" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(132, 48, 206); clear: none; clip: auto; color: #8430ce; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(132, 48, 206) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">from</span> <span class="hljs-string" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(24, 128, 56); clear: none; clip: auto; color: #188038; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(24, 128, 56) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">'https://cdn.jsdelivr.net/npm/webllm@latest'</span>;
<span class="hljs-comment" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(95, 99, 104); clear: none; clip: auto; color: #5f6368; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(95, 99, 104) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">// Your WebLLM code here</span>
</span><span class="hljs-tag" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(87, 91, 95); clear: none; clip: auto; color: #575b5f; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(87, 91, 95) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;"></<span class="hljs-name" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(217, 48, 37); clear: none; clip: auto; color: #d93025; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(217, 48, 37) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">script</span>></span>
- Load the LLM Model: Initialize the WebLLM engine (e.g.,
'Llama-3-8B'). The first load downloads model weights, so provide loading indicators.
- Utilize Web Workers:
JavaScript<span class="hljs-keyword" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(132, 48, 206); clear: none; clip: auto; color: #8430ce; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(132, 48, 206) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">async</span> <span class="hljs-function" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(87, 91, 95); clear: none; clip: auto; color: #575b5f; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(87, 91, 95) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;"><span class="hljs-keyword" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(132, 48, 206); clear: none; clip: auto; color: #8430ce; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(132, 48, 206) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">function</span> <span class="hljs-title" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(153, 105, 0); clear: none; clip: auto; color: #996900; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(153, 105, 0) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">main</span>(<span class="hljs-params" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(87, 91, 95); clear: none; clip: auto; color: #575b5f; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(87, 91, 95) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;"></span>) </span>{
<span class="hljs-keyword" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(132, 48, 206); clear: none; clip: auto; color: #8430ce; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(132, 48, 206) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">const</span> engine = <span class="hljs-keyword" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(132, 48, 206); clear: none; clip: auto; color: #8430ce; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(132, 48, 206) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">new</span> webllm.WebWorkerMLCEngine();
<span class="hljs-keyword" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(132, 48, 206); clear: none; clip: auto; color: #8430ce; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(132, 48, 206) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">await</span> engine.init(<span class="hljs-string" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(24, 128, 56); clear: none; clip: auto; color: #188038; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(24, 128, 56) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">'Llama-3-8B'</span>);
<span class="hljs-comment" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(95, 99, 104); clear: none; clip: auto; color: #5f6368; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(95, 99, 104) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">// Use engine for chat</span>
}
main();
- Integrate with UI/Logic: Use WebLLM's OpenAI API-compatible interface for chat completions or text generation. Connect this to your app's input fields and display areas.
JavaScript<span class="hljs-keyword" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(132, 48, 206); clear: none; clip: auto; color: #8430ce; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(132, 48, 206) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">const</span> response = <span class="hljs-keyword" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(132, 48, 206); clear: none; clip: auto; color: #8430ce; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(132, 48, 206) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">await</span> engine.chat(<span class="hljs-string" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(24, 128, 56); clear: none; clip: auto; color: #188038; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(24, 128, 56) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">'What is the capital of France?'</span>);
<span class="hljs-built_in" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(25, 103, 210); clear: none; clip: auto; color: #1967d2; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(25, 103, 210) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">console</span>.log(response);
- Create a Web Project: Start with a suitable Replit web template (e.g., HTML, CSS, JS; Node.js, React, Vue).
- Install WebLLM:
- NPM (Recommended): In your Replit shell, run
npm install @mlc-ai/web-llm @langchain/community @langchain/core. Then, import:import * as webllm from "@mlc-ai/web-llm"; - CDN (Simple Projects): Include in your HTML:
HTML
<span class="hljs-tag" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(87, 91, 95); clear: none; clip: auto; color: #575b5f; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(87, 91, 95) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;"><<span class="hljs-name" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(217, 48, 37); clear: none; clip: auto; color: #d93025; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(217, 48, 37) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">script</span> <span class="hljs-attr" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(181, 89, 8); clear: none; clip: auto; color: #b55908; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(181, 89, 8) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">type</span>=<span class="hljs-string" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(24, 128, 56); clear: none; clip: auto; color: #188038; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(24, 128, 56) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">"module"</span>></span><span class="javascript" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(87, 91, 95); clear: none; clip: auto; color: #575b5f; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(87, 91, 95) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;"> <span class="hljs-keyword" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(132, 48, 206); clear: none; clip: auto; color: #8430ce; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(132, 48, 206) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">import</span> { init, chat } <span class="hljs-keyword" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(132, 48, 206); clear: none; clip: auto; color: #8430ce; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(132, 48, 206) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">from</span> <span class="hljs-string" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(24, 128, 56); clear: none; clip: auto; color: #188038; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(24, 128, 56) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">'https://cdn.jsdelivr.net/npm/webllm@latest'</span>; <span class="hljs-comment" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(95, 99, 104); clear: none; clip: auto; color: #5f6368; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(95, 99, 104) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">// Your WebLLM code here</span> </span><span class="hljs-tag" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(87, 91, 95); clear: none; clip: auto; color: #575b5f; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(87, 91, 95) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;"></<span class="hljs-name" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(217, 48, 37); clear: none; clip: auto; color: #d93025; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(217, 48, 37) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">script</span>></span>
- NPM (Recommended): In your Replit shell, run
- Load the LLM Model: Initialize the WebLLM engine (e.g.,
'Llama-3-8B'). The first load downloads model weights, so provide loading indicators. - Utilize Web Workers:
JavaScript
<span class="hljs-keyword" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(132, 48, 206); clear: none; clip: auto; color: #8430ce; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(132, 48, 206) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">async</span> <span class="hljs-function" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(87, 91, 95); clear: none; clip: auto; color: #575b5f; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(87, 91, 95) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;"><span class="hljs-keyword" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(132, 48, 206); clear: none; clip: auto; color: #8430ce; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(132, 48, 206) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">function</span> <span class="hljs-title" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(153, 105, 0); clear: none; clip: auto; color: #996900; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(153, 105, 0) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">main</span>(<span class="hljs-params" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(87, 91, 95); clear: none; clip: auto; color: #575b5f; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(87, 91, 95) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;"></span>) </span>{ <span class="hljs-keyword" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(132, 48, 206); clear: none; clip: auto; color: #8430ce; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(132, 48, 206) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">const</span> engine = <span class="hljs-keyword" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(132, 48, 206); clear: none; clip: auto; color: #8430ce; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(132, 48, 206) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">new</span> webllm.WebWorkerMLCEngine(); <span class="hljs-keyword" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(132, 48, 206); clear: none; clip: auto; color: #8430ce; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(132, 48, 206) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">await</span> engine.init(<span class="hljs-string" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(24, 128, 56); clear: none; clip: auto; color: #188038; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(24, 128, 56) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">'Llama-3-8B'</span>); <span class="hljs-comment" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(95, 99, 104); clear: none; clip: auto; color: #5f6368; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(95, 99, 104) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">// Use engine for chat</span> } main(); - Integrate with UI/Logic: Use WebLLM's OpenAI API-compatible interface for chat completions or text generation. Connect this to your app's input fields and display areas.
JavaScript
<span class="hljs-keyword" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(132, 48, 206); clear: none; clip: auto; color: #8430ce; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(132, 48, 206) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">const</span> response = <span class="hljs-keyword" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(132, 48, 206); clear: none; clip: auto; color: #8430ce; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(132, 48, 206) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">await</span> engine.chat(<span class="hljs-string" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(24, 128, 56); clear: none; clip: auto; color: #188038; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(24, 128, 56) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">'What is the capital of France?'</span>); <span class="hljs-built_in" style="animation: 0s ease 0s 1 normal none running none; appearance: none; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0); border: 0px none rgb(25, 103, 210); clear: none; clip: auto; color: #1967d2; columns: auto; contain: none; container: none; content: normal; cursor: auto; cx: 0px; cy: 0px; d: none; direction: ltr; display: inline; fill: rgb(0, 0, 0); filter: none; flex: 0 1 auto; float: none; font-family: "Google Sans Text", sans-serif !important; font-feature-settings: normal; font-kerning: auto; font-optical-sizing: auto; font-size-adjust: none; font-size: 14px; font-stretch: normal; font-style: normal; font-variant: normal; font-variation-settings: normal; font-weight: normal; gap: normal; hyphens: manual; inset: auto; interactivity: auto; isolation: auto; line-height: 1.15 !important; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px !important; marker: none; mask: none; offset: normal; opacity: 1; order: 0; orphans: 2; outline: rgb(25, 103, 210) none 0px; overlay: none; padding: 0px; page: auto; perspective: none; position: static; quotes: auto; r: 0px; resize: none; rotate: none; rx: auto; ry: auto; scale: none; speak: normal; stroke: none; transform: none; transition: all; translate: none; visibility: visible; widows: 2; x: 0px; y: 0px; zoom: 1;">console</span>.log(response);
Server-Side LLM Integration Techniques
For applications requiring more powerful models, centralized control, or specific data handling, server-side LLM integration is key. Your application can host the frontend and a lightweight backend to facilitate these connections.
For applications requiring more powerful models, centralized control, or specific data handling, server-side LLM integration is key. Your application can host the frontend and a lightweight backend to facilitate these connections.
A. Cloud-Hosted LLM APIs
This is the most common and often simplest method, where your application's backend makes HTTP requests to an LLM provider's API.
This is the most common and often simplest method, where your application's backend makes HTTP requests to an LLM provider's API.
How it Works
Your backend (e.g., Node.js, Python Flask) sends user prompts as HTTP requests to a provider's API endpoint. The API processes the request and returns the LLM's response to your backend, which then passes it to your frontend.
Your backend (e.g., Node.js, Python Flask) sends user prompts as HTTP requests to a provider's API endpoint. The API processes the request and returns the LLM's response to your backend, which then passes it to your frontend.
Key Providers
- OpenAI: GPT-3.5, GPT-4 (including gpt-4o, gpt-4-turbo), embedding models.
- Anthropic: Claude models (Claude 3 Opus, Sonnet, Haiku).
- Google Cloud Vertex AI: Gemini, PaLM 2, and specialized models.
- Microsoft Azure OpenAI Service: OpenAI models with Azure's enterprise features.
- Hugging Face Inference API: Access to many open-source models.
- Cohere: Enterprise-grade LLMs for generation, summarization, embeddings.
- Meta Llama (Llama 3, Llama 2): Typically accessed via API services or self-hosting.
- OpenAI: GPT-3.5, GPT-4 (including gpt-4o, gpt-4-turbo), embedding models.
- Anthropic: Claude models (Claude 3 Opus, Sonnet, Haiku).
- Google Cloud Vertex AI: Gemini, PaLM 2, and specialized models.
- Microsoft Azure OpenAI Service: OpenAI models with Azure's enterprise features.
- Hugging Face Inference API: Access to many open-source models.
- Cohere: Enterprise-grade LLMs for generation, summarization, embeddings.
- Meta Llama (Llama 3, Llama 2): Typically accessed via API services or self-hosting.
Advantages
- Simplicity: Minimal setup, primarily requiring an API key and code.
- Scalability: Providers manage the underlying infrastructure, scaling automatically with demand.
- Performance: Optimized hardware ensures fast inference.
- Access to State-of-the-Art Models: Easy access to the most powerful and up-to-date LLMs.
- Cost-Effective (low/moderate usage): Typically operates on a pay-per-token or pay-per-request model.
- Simplicity: Minimal setup, primarily requiring an API key and code.
- Scalability: Providers manage the underlying infrastructure, scaling automatically with demand.
- Performance: Optimized hardware ensures fast inference.
- Access to State-of-the-Art Models: Easy access to the most powerful and up-to-date LLMs.
- Cost-Effective (low/moderate usage): Typically operates on a pay-per-token or pay-per-request model.
Disadvantages
- Cost at Scale: Can become expensive with high usage.
- Data Privacy: User data leaves your control and is processed by third-party servers. Thoroughly review provider data policies.
- External Service Dependence: Relies on the API provider's uptime and performance.
- Cost at Scale: Can become expensive with high usage.
- Data Privacy: User data leaves your control and is processed by third-party servers. Thoroughly review provider data policies.
- External Service Dependence: Relies on the API provider's uptime and performance.
Replit Implementation Notes
- Securely store API keys using Replit's Secrets feature.
- Use libraries like
requests (Python), axios or node-fetch (Node.js), or official SDKs for API calls.
- Securely store API keys using Replit's Secrets feature.
- Use libraries like
requests(Python),axiosornode-fetch(Node.js), or official SDKs for API calls.
B. Self-Hosting Open-Source LLMs
This method offers maximum control but involves significant complexity and resource requirements.
This method offers maximum control but involves significant complexity and resource requirements.
How it Works
Deploy an open-source LLM (e.g., Llama 3, Mistral) on a dedicated server (VM or cloud instance) that your application's backend communicates with. Replit's standard compute resources are generally insufficient for directly hosting large LLMs. Your Replit application would typically use a lightweight backend to proxy requests to your self-hosted LLM server.
Deploy an open-source LLM (e.g., Llama 3, Mistral) on a dedicated server (VM or cloud instance) that your application's backend communicates with. Replit's standard compute resources are generally insufficient for directly hosting large LLMs. Your Replit application would typically use a lightweight backend to proxy requests to your self-hosted LLM server.
Tools for Self-Hosting
- ollama: For local LLM deployment (can be on a separate VM).
- Hugging Face
transformers: Python library for programmatic LLM usage.
llama.cpp: Optimized C++ library for efficient CPU/GPU LLM inference.
- ollama: For local LLM deployment (can be on a separate VM).
- Hugging Face
transformers: Python library for programmatic LLM usage. llama.cpp: Optimized C++ library for efficient CPU/GPU LLM inference.
Advantages
- Full Control: Complete control over the model, data, and underlying infrastructure.
- Cost-Effective (high usage): Eliminates per-token costs after the initial hardware investment.
- Enhanced Privacy: Data remains within your controlled environment.
- Customization: Ability to fine-tune models for specific needs.
- Full Control: Complete control over the model, data, and underlying infrastructure.
- Cost-Effective (high usage): Eliminates per-token costs after the initial hardware investment.
- Enhanced Privacy: Data remains within your controlled environment.
- Customization: Ability to fine-tune models for specific needs.
Disadvantages
- High Complexity: Requires deep knowledge of ML deployment, server management, and GPU optimization.
- Significant Resource Requirements: Demands substantial CPU, RAM, and often powerful GPUs.
- Scalability Challenges: More complex and costly to scale for a large number of users compared to cloud services.
- High Complexity: Requires deep knowledge of ML deployment, server management, and GPU optimization.
- Significant Resource Requirements: Demands substantial CPU, RAM, and often powerful GPUs.
- Scalability Challenges: More complex and costly to scale for a large number of users compared to cloud services.
Replit Implementation Notes
- The Replit app would host a proxy backend to forward requests to your separate, self-hosted LLM server.
- Ensure your self-hosted LLM server is accessible via a public IP or secure tunnel.
- The Replit app would host a proxy backend to forward requests to your separate, self-hosted LLM server.
- Ensure your self-hosted LLM server is accessible via a public IP or secure tunnel.
C. Edge Computing Platforms
These platforms strike a balance by running LLM inference closer to the user on a global network of edge servers.
These platforms strike a balance by running LLM inference closer to the user on a global network of edge servers.
How it Works
Your application (frontend or lightweight backend) sends requests to the edge platform's API, which processes them using pre-deployed LLMs.
Your application (frontend or lightweight backend) sends requests to the edge platform's API, which processes them using pre-deployed LLMs.
Advantages
- Lower Latency: Inference happens geographically closer to users.
- Reduced Operational Overhead: No LLM infrastructure to manage directly.
- Scalability: Managed and provided by the edge platform.
- Potentially Lower Costs: Can offer competitive pricing for specific use cases.
- Lower Latency: Inference happens geographically closer to users.
- Reduced Operational Overhead: No LLM infrastructure to manage directly.
- Scalability: Managed and provided by the edge platform.
- Potentially Lower Costs: Can offer competitive pricing for specific use cases.
Disadvantages
- Less Customization: Limited control over specific LLM versions or fine-tuning compared to self-hosting.
- Vendor Lock-in: Tied to the specific edge provider's ecosystem.
- Less Customization: Limited control over specific LLM versions or fine-tuning compared to self-hosting.
- Vendor Lock-in: Tied to the specific edge provider's ecosystem.
Replit Implementation Notes
- Similar to cloud APIs, your Replit backend would make HTTP requests to the edge platform's API.
- Similar to cloud APIs, your Replit backend would make HTTP requests to the edge platform's API.
Hybrid App Approach and Future Perspectives
A hybrid approach can combine the best of both worlds, offering flexibility and catering to different user needs and device capabilities.
A hybrid approach can combine the best of both worlds, offering flexibility and catering to different user needs and device capabilities.
Hybrid Application Model
Consider developing applications with two primary tiers:
- Private Tier (Local): Runs entirely on the user's device (e.g., using WebLLM), ensuring maximum privacy. This option could initially be restricted to mobile apps where local processing is more feasible or preferred.
- Cloud Tier (Less Private): Utilizes server-side LLM integration (e.g., cloud-hosted APIs), offering broader accessibility across web and mobile platforms.
This allows users to choose based on their privacy preferences, device capabilities, and cost considerations. For instance, a user might start with a cloud-based conversation and then switch to a local one once the LLM is downloaded and their device is confirmed to support it.
Consider developing applications with two primary tiers:
- Private Tier (Local): Runs entirely on the user's device (e.g., using WebLLM), ensuring maximum privacy. This option could initially be restricted to mobile apps where local processing is more feasible or preferred.
- Cloud Tier (Less Private): Utilizes server-side LLM integration (e.g., cloud-hosted APIs), offering broader accessibility across web and mobile platforms.
This allows users to choose based on their privacy preferences, device capabilities, and cost considerations. For instance, a user might start with a cloud-based conversation and then switch to a local one once the LLM is downloaded and their device is confirmed to support it.
Future Outlook
The landscape of LLMs is rapidly evolving. We can anticipate:
- Lighter LLM Downloads: As models become more efficient and smaller, the initial download size for client-side LLMs will decrease, making them more accessible.
- Mainstream Local AI: Tools and applications that enable local LLM execution (like LM Studio) are likely to become more prevalent and user-friendly. Rebranding such tools (e.g., LM Studio to "Chat Studio") and offering diverse models for quick, local chatting could further accelerate this trend.
- Ubiquitous Fast GPUs: Fast GPUs capable of running LLMs efficiently are becoming a default feature in most new devices, further enabling widespread client-side AI.
The landscape of LLMs is rapidly evolving. We can anticipate:
- Lighter LLM Downloads: As models become more efficient and smaller, the initial download size for client-side LLMs will decrease, making them more accessible.
- Mainstream Local AI: Tools and applications that enable local LLM execution (like LM Studio) are likely to become more prevalent and user-friendly. Rebranding such tools (e.g., LM Studio to "Chat Studio") and offering diverse models for quick, local chatting could further accelerate this trend.
- Ubiquitous Fast GPUs: Fast GPUs capable of running LLMs efficiently are becoming a default feature in most new devices, further enabling widespread client-side AI.
Choosing the Right LLM Integration Technique
When deciding which technique to use, consider the following factors:
- Cost: Cloud APIs are cost-effective for starting, while self-hosting has higher upfront fixed costs but lower per-token costs over time.
- Performance/Latency: Cloud and edge solutions generally offer superior performance and lower latency. WebLLM's performance is dependent on the user's device hardware.
- Privacy Requirements: WebLLM provides the highest level of privacy, followed by self-hosting. Cloud/edge platforms require careful review of their data privacy policies.
- Development Effort/Complexity: Cloud APIs are the easiest to implement. Self-hosting is the most complex, demanding specialized knowledge.
- Scalability Needs: Cloud and edge platforms offer built-in scalability. Self-hosting requires significant manual effort and investment to scale.
- Model Flexibility: Self-hosting provides the most flexibility for choosing, customizing, and fine-tuning specific LLM models.
Do you have a specific project in mind, or are you looking to explore one of these integration methods in more detail?
When deciding which technique to use, consider the following factors:
- Cost: Cloud APIs are cost-effective for starting, while self-hosting has higher upfront fixed costs but lower per-token costs over time.
- Performance/Latency: Cloud and edge solutions generally offer superior performance and lower latency. WebLLM's performance is dependent on the user's device hardware.
- Privacy Requirements: WebLLM provides the highest level of privacy, followed by self-hosting. Cloud/edge platforms require careful review of their data privacy policies.
- Development Effort/Complexity: Cloud APIs are the easiest to implement. Self-hosting is the most complex, demanding specialized knowledge.
- Scalability Needs: Cloud and edge platforms offer built-in scalability. Self-hosting requires significant manual effort and investment to scale.
- Model Flexibility: Self-hosting provides the most flexibility for choosing, customizing, and fine-tuning specific LLM models.
Do you have a specific project in mind, or are you looking to explore one of these integration methods in more detail?