Upgrading agentic coding capabilities with the new Devstral models

Today, we introduce Devstral Medium, as well as an upgrade to Devstral Small. These models are released under the collaboration between Mistral AI and All Hands AI 🙌, with a strong emphasis on generalization to different prompts and agentic scaffolds.

The new Devstral Small 1.1 is released under the Apache 2.0 license, and is state-of-the-art amongst open models for code agents. Devstral Medium is available through our API, and sets a new point on the cost/performance pareto frontier, surpassing Gemini 2.5 Pro and GPT 4.1 for a quarter of the price.