Devstral 2
SOTA open-source agentic coding models and CLI agent
Devstral 2 launched on December 10, 2025 with 190 votes, #139 of 11,628 launches that month and more than 95% of that year's launches.
What it does
Devstral 2 is the new SOTA open-weight coding family, achieving 72.2% on SWE-bench Verified. It ships with Mistral Vibe, an open-source CLI agent for end-to-end code automation. Currently free via API.
The most powerful AI platform for enterprises. Customize, fine-tune, and deploy AI assistants, autonomous agents, and multimodal AI with open models.
Today, we're releasing Devstral 2—our next-generation coding model family available in two sizes: Devstral 2 (123B) and Devstral Small 2 (24B). Devstral 2 ships under a modified MIT license, while Devstral Small 2 uses Apache 2.0. Both are open-source and permissively licensed to accelerate distributed intelligence. We are also introducing Mistral Vibe, a native CLI built for Devstral that enables end-to-end code automation. Devstral 2: SOTA open model for code agents with a fraction of the parameters of its competitors and achieving 72.2% on SWE-bench Verified. Up to 7x more cost-efficient than Claude Sonnet at real-world tasks. Mistral Vibe CLI: Native, open-source agent in your terminal…from mistral.ai
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