Mozilla and Mistral: Firefox Smart Window now runs on Mistral Small 4

Mozilla and Mistral announced that the Firefox Smart Window beta is powered by Mistral Small 4, launching in the US, Canada and France, with the UK and Germany expected later in 2026. Mozilla promises users can still choose among multiple models, and Mistral agreed to zero data retention.

• Smart Window on Mistral Small 4 launches in the US, Canada and France
• France is the first new market with official French-language support
• Mozilla says Firefox users can still pick from multiple AI models
• Mistral agreed to zero data retention for conversations