Firefox Smart Window Pairs With Mistral AI, Prioritizing Privacy Over Automation

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Mozilla and Mistral announced on September 16, 2026, that Firefox Smart Window, Mozilla's in-browser AI assistant, is now powered by Mistral's models for users in the US, Canada, and France. Unlike agent-mode rivals such as ChatGPT Atlas and Perplexity's Comet, Smart Window does not fill forms, click links, or act autonomously on a user's behalf. Its features are limited to answering questions with cited sources, grouping browser tabs, and surfacing visual previews of previously visited pages. Mozilla has committed that conversations are not stored on its servers by default, Mistral applies zero data retention for the integration, and no personal data will be sold or used to train models. The feature is opt-in, with users controlling which tabs and history the assistant can access, and it can be disabled entirely through Firefox's AI Controls.

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