Is Devstral Medium available on FastMetal?

Not at the moment. Voxtral Mini 3B, from the same lab, is available on the FastMetal API today.

What is the context window of Devstral Medium?

131,072 tokens, shared between the prompt and the response.

How does Devstral Medium rank?

#127 on the public arena's Overall board (ELO 1,081). Ranks move as the leaderboard is updated.

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mistralai/devstral-medium

Not Available

Devstral Medium

Devstral Medium is a high-performance code generation and agentic reasoning model developed jointly by Mistral AI and All Hands AI. Positioned as a step up from Devstral Small, it achieves 61.6% on SWE-Bench Verified, placing it ahead of Gemini 2.5 Pro and GPT-4.1 in code-related tasks, at a fraction of the cost. It is designed for generalization across prompt styles and tool use in code agents and frameworks. Devstral Medium is available via API only (not open-weight), and supports enterprise deployment on private infrastructure, with optional fine-tuning capabilities.

7/10/2025

131,072 tokens

#127 Code (Overall)

Specifications

Modalities

Input

text

Output

text

Supported Parameters

frequency_penalty

max_tokens

presence_penalty

response_format

seed

stop

structured_outputs

temperature

tool_choice

tools

top_p

Frequently asked questions

Is Devstral Medium available on FastMetal?: Not at the moment. Voxtral Mini 3B, from the same lab, is available on the FastMetal API today.
What is the context window of Devstral Medium?: 131,072 tokens, shared between the prompt and the response.
How does Devstral Medium rank?: #127 on the public arena's Overall board (ELO 1,081). Ranks move as the leaderboard is updated.

Leaderboard

Code

OverallELO: 1,081

#127

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