Firefox's Smart Window now runs on Mistral
Mozilla has made Mistral the model provider behind Firefox's Smart Window AI assistant, putting a European open-weights lab in a consumer browser slot US incumbents usually occupy.
Mozilla's Firefox Smart Window, the browser's AI assistant, is now powered by Mistral models, the French lab said in a blog post announcing the partnership. Coverage starts with users in France and North America, with the United Kingdom and Germany "expected to follow later this year."
Smart Window, still in beta, is pitched as a way to work through complex searches, retrieve pages a user has clicked away from, and pull information from open tabs. Mistral says it is fine-tuning models on regional languages, dialects and cultural context so responses reflect local nuance.
On privacy, the post states that Smart Window conversations are not saved on Mozilla's servers by default and that partners including Mistral agree to zero data retention.
Both executives framed the deal around open source and distribution. "A browser shouldn't be a one-way funnel," said Anthony Enzor-DeMeo, CEO of Mozilla Corporation, arguing the browser should be a place where AI providers compete and open source "has a seat at the table." Arthur Mensch, Mistral co-founder and CEO, called it "two open source advocates working together." Mistral also positions the deal as extending its work beyond its traditional enterprise focus to consumers.
The announcement is a vendor blog post and leaves the commercial substance unstated: no deal terms, no financial arrangement, no named model or version, no benchmarks, and no detail on whether Mistral is exclusive or one of several providers behind Smart Window.