Mistral's new flagship Medium 3.5 folds chat, reasoning, and code into one model

THE DECODER / 5/1/2026

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Key Points

  • Mistral has launched its new flagship model, Mistral Medium 3.5, which combines chat, reasoning, and code capabilities into a single model rather than separate ones.
  • The company is also enhancing its coding tool Vibe by adding asynchronous cloud agents.
  • Le Chat is receiving a new “agent mode,” expanding how users can interact with the assistant.
  • Overall, the update aims to unify multiple workflows (conversation, reasoning, and coding) and make agent-based execution more capable in Mistral’s ecosystem.

Mistral's new flagship, Mistral Medium 3.5, merges what used to be separate models for chat, reasoning, and code into a single product. The French company is also adding asynchronous cloud agents to its coding tool Vibe and giving Le Chat a new agent mode.

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