Firefox Enters AI Browser Race With New Opt-In Mode
Mozilla positions its AI Window as a user-controlled alternative to deeply integrated AI in Chrome and Edge.
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Mozilla has entered the AI browser race with plans for AI Window, an opt-in mode in Firefox that adds an AI assistant and chatbot.
Firefox Vice President and Head of Product Management Ajit Varma calls it an “intelligent and user-controlled space” and says Mozilla is building it “in the open” with ongoing user feedback.
AI Window will sit alongside Firefox’s classic and private windows, giving users a third browsing option built for AI use.
Varma wrote in a blog that users will be able to choose the AI model powering the feature, though Mozilla has not yet disclosed which models will be available. A public waitlist is open.
The announcement follows Mozilla’s earlier AI experiments.
In September, Firefox added “shake to summarize” on iPhones, letting users generate AI summaries of webpages on demand.
Mozilla has framed its approach around user choice rather than default AI integration.
“While others are building AI experiences that keep you locked in a conversational loop, we see a different path,” Varma wrote, positioning AI Window as a tool that guides users “outward to the broader web.”
The launch comes as major browser makers accelerate AI adoption. Google is pushing Gemini deeper into Chrome, and Microsoft has made Copilot central to Edge. Mozilla’s opt-in strategy contrasts with these more integrated approaches.
Firefox holds about 3% of the global browser market when compared with Chrome’s roughly 73%, according to StatCounter. As competition intensifies, Mozilla is leaning on its identity as an independent browser focused on openness, transparency and user control.
