LocalGPT - Chrome Extension

LocalGPT is a free, open-source Chrome extension that lets you chat with a ChatGPT-style assistant directly on your own device. Built on WebLLM and accelerated with WebGPU, it runs the AI model locally so your prompts and responses stay on your computer—no cloud account, no server-side processing, and no routine data transfer to third parties.

LocalGPT is designed for people who want the convenience of conversational AI without giving up control of their data. After the initial setup and model download, you can continue using it offline, making it practical for travel, restricted networks, or anyone who simply prefers to keep AI usage private. Because everything runs in the browser, the experience feels lightweight and familiar, while still delivering a modern chat interface for everyday questions, drafting, brainstorming, and more.

Unlike typical AI chat services that require a constant internet connection and send your requests to remote infrastructure, LocalGPT keeps inference on-device. This approach supports privacy-focused workflows and reduces dependency on external uptime. It’s also a good fit for users who want an accessible entry point into local AI: install the extension, complete the first-time setup, and start chatting.

If you’re looking for an offline-capable, privacy-first alternative to cloud chatbots—powered by WebLLM and using WebGPU for speed—LocalGPT brings that experience to Chrome in a straightforward, open-source package. more