Mistral AI released Devstral 2, a 123 billion parameter open-weights coding model that scores 72.2% on SWE-bench Verified, approaching proprietary model performance. The release includes Mistral Vibe, a CLI tool for autonomous software engineering similar to Claude Code and OpenAI Codex. A smaller 24 billion parameter version (Devstral Small 2) achieves 68% on the same benchmark and can run locally on consumer hardware. Both models support 256,000 token context windows and are released under permissive licenses (modified MIT and Apache 2.0).
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