tl;dr: Mistral is partnering with Mozilla to power Firefox's new Smart Window AI browsing assistant (in beta), rolling out first in France and North America, with the UK and Germany later this year. The integration emphasizes privacy (conversations aren't saved by default, Mistral commits to zero data retention) and models fine-tuned for regional languages and dialects. Both companies are pitching this as an open-source alternative to closed AI pipelines being built into browsers.