Devstral Medium

Retired May 2026

Mistral AI's mid-size model for agentic software engineering, with an undisclosed parameter count.

Context: 128K tokens
Max output: 33K
Released: Jul 2025

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Capabilities

What Devstral Medium accepts and can do, as published by Mistral.

Text Accepts and generates natural-language text.
Function calling Connect to external tools, APIs, and systems.
Code execution Write and execute code in a sandboxed environment.

Common questions

What is Devstral Medium good for?

Agent-style software engineering across a codebase. Text in, text out.

When is Devstral Medium not a good fit?

Any new work: Mistral retired it from its API in May 2026. Closed weights, so no self-hosting, and no image input.

Can I self-host Devstral Medium?

No. Mistral does not publish the weights; Devstral Medium is available only through hosted APIs.

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