I tried Firefox’s new AI ‘Smart Window’ in a beta build
www.omgubuntu.co.uk
Smart Window is activated using a button in the window frame. Once activated, the browser’s colour scheme changes. I find it has echoes of the major Firefox Nova redesign that’s coming due to the roundness and pastel gradients.
The beta doesn’t show model names on the selection screen, but they are they’re listed in Preferences > AI Controls > Smart Window:
- Fast – Google’s Gemini Flash Lite
- Flexible – Alibaba Cloud’s Qwen3-235B-A22B
- Personal – OpenAI’s GPT-OSS 120B
I tried Firefox's new AI 'Smart Window' in a beta build
Firefox's new AI-powered 'Smart Window' feature is taking shape in development builds – I gave it a hands on in the latest v149.0b7 beta (on macOS).

