Mistral Medium 3.5 joins Microsoft Copilot Studio model lineup

Microsoft Copilot Studio integrated Mistral Medium 3.5 into its lineup of supported models for building and orchestrating AI agents, a move Microsoft's Charles Lamanna highlighted on LinkedIn. The integration emphasizes flexibility around regional data handling and control — a clear nod to European customers who want a European-origin model within Microsoft's enterprise tooling.

Mistral Medium 3.5 is now available globally to Copilot Studio customers in early-release environments. The model is part of Mistral's consolidated strategy, natively incorporating image processing, reasoning and coding, which makes it a versatile single-model option for agent builders rather than requiring orchestration across specialized models.

The deal reinforces Microsoft's multi-model posture: Copilot Studio already supports OpenAI and other models, and adding Mistral broadens choice while letting Microsoft pitch enterprise-grade governance on top. For Mistral, distribution through Microsoft's enterprise channel is significant reach it couldn't easily build alone. The context that matters: this comes the same week Mistral made its biggest independent platform push with Vibe and the Industrial Engineering suite — so Mistral is simultaneously a Microsoft partner and a would-be platform competitor, the same dual dynamic playing out between AWS and Anthropic.