Your browser is the app
The interface, chat history, permissions, and model runtime live in the browser. No account or mandatory backend is required.
LOCAL FIRSTHONEST BY DESIGN
Small helper.
Visible machinery.
Bitzi is a static, local-first AI workbench. The interface shows when a capability is local, when a network request is made, and when a tool is not connected yet.
The model is opt-in
Bitzi checks for WebGPU first. The approximately 3.8 GB Bonsai model is requested only after you choose Load Local Brain and confirm the download.
Network tools stay visible
General website search runs only when search is enabled and the prompt asks for outside information. Brave finds pages, Cloudflare Browser Run reads the strongest results, and Wikipedia remains a visible fallback.
No pretend tools
Selected PDF, Word, text, data, and code files are read locally and shown before use. Python remains labelled unavailable until its real runtime exists.
CURRENT BUILD
Working now
- Responsive landing page and full-screen chat
- Local browser transcript storage and clear controls
- Local PDF, Word, text, data, and source-code attachments
- Adjustable context window with a live memory estimate
- General website search and reading with visible source links and Wikipedia fallback
- Opt-in Bonsai 27B WebGPU loader and streamed local replies
- Device checks, phone-safe context, and reduced-motion support
Still being built
- Installable PWA shell and offline application cache
- Sandboxed Python execution
- OCR for scanned PDFs and image documents
- IndexedDB conversation and memory storage
- Additional search providers and exportable job artifacts