WebLLM
Runs an AI chatbot entirely inside a browser tab using your graphics chip, with nothing to install and nothing sent to a server after the model downloads.
What you can do with it
- Private chat with no install or account
- Add an offline AI helper to your own web page
- Try small open models before installing anything
Worth knowingNeeds a browser with WebGPU (tested in Edge and Chrome). Small models only: the first visit downloads about 0.7GB per model, and they are much weaker than ChatGPT on facts.
The full tutorial
01Open your private AI page and ask it somethingFREE02Switch off the Wi-Fi and keep chattingMEMBERS03Get the full chat app: WebLLM ChatMEMBERS04Keep your own copy of the page (one file)MEMBERS05See where the model is stored, and clear itMEMBERS
Run a private AI chatbot in a browser tab, with one click · ~20 min · tested 2026-10-09
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