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 Medium 3.5 is a 128B dense flagship model with a 256k context window, combining instruction-following, reasoning, and coding. It becomes the default model for Le Chat and Mistral Vibe, enabling cloud-based remote coding agents launched from the CLI or chat. The release also adds Le Chat Work mode for multi-step, cross-tool workflows with visible actions and approval gates for sensitive operations.