Mistral Medium 3.5 is a 128B dense model in public preview, combining instruction-following, reasoning, and coding with a 256k context window. It becomes the default model for Le Chat and Mistral Vibe. Vibe now supports remote coding agents that run asynchronously in the cloud, while Le Chat adds Work mode for longer multi-step tasks across connected tools.
Mistral’s AI Now Summit 2026 post highlights a broader enterprise AI push rather than a single model launch. It introduces Mistral for Industrial Engineering, including work with Airbus, BMW Group, and ASML, and updates Vibe as a unified long-horizon productivity and coding agent. The post also announces the Les Ulis 10 MW inference data center, scheduled for Q3 2026, emphasizing control, security, and infrastructure resilience.