Mistral 3.5 Medium

NEW

Key Features

Combines instruction following, reasoning, and coding in a 128B dense model.
Powers remote coding agents inside Mistral Vibe.
Supports Work mode in Le Chat for complex multi-step tasks.
Allows cloud-based coding sessions that can run asynchronously.
Useful for background implementation, research, and cross-tool actions.
Released as open weights under a modified MIT license.
Can be self-hosted for teams that need more deployment control.
Targets long-running productivity and software engineering workflows.

The product is important because it moves coding agents from a local laptop workflow into cloud-based remote sessions. Users can spawn agents from the Vibe CLI or Le Chat, let them run asynchronously, and receive notifications when tasks are complete. That makes the model useful for parallel coding work, background implementation tasks, research, analysis, and cross-tool actions.


Mistral 3.5 Medium is released as open weights under a modified MIT license, giving developers the option to self-host and adapt it while also using Mistral products that integrate the model directly. It is valuable for teams that want strong coding and reasoning performance with more control over deployment than a purely closed model provides.

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