Built-in Firefox AI assistant that answers questions about the page and open tabs and searches browsing history in natural language
Beta in US, Canada, France only Need it free right now? Try Sider →
Firefox Smart Window is listed under Browser Extensions & Copilots, in the AI Chat & Assistants category on Flocci AI Tools. Built-in Firefox AI assistant that answers questions about the page and open tabs and searches browsing history in natural language. It is free, with no paid plan attached, and it lives at firefox.com.
Yes, it's free to use, but beta in US, Canada, France only If you need it free right now, Sider does the same job for free.
Firefox Smart Window needs to be installed or self-hosted — it doesn't run in a browser tab. It is available on inside another product, Mac, Windows and Linux. Beta in US, Canada, France only
Firefox Smart Window does 4 things the catalog singles out: Built-in firefox ai assistant that answers questions about the page and open tabs and searches browsing history in natural language; switch models mid-chat: google gemini, alibaba qwen, openai gpt-oss-120b, and mistral small 4 (added sept 2026); free with no subscription; beta for macos and windows in the us, canada and france, uk and germany expected later; conversations stay local by default; mistral partnership uses zero data retention.
Sider is the best free alternative: it does the same job and you can start without paying. Gemini in Chrome, Opera Browser AI (Aria) and Page Assist also start free. The full list is on the alternatives page.
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