Mistral AI Releases Devstral 2507 Model Series for Code Agents and Software Engineering

Mistral AI’s Devstral 2507 release introduces two models—Devstral Small 1.1 and Devstral Medium—built for code-centric tasks like debugging, multi-file editing, and agent-based development. Devstral Small is open source with 53.6% SWE-Bench Verified accuracy and supports local deployment via GGUF formats. Devstral Medium, scoring 61.6%, is API-accessible and designed for production use, outperforming even GPT-4.1 in code benchmarks. The update gives developers a choice between efficient offline workflows and high-accuracy cloud integration.

Full Analysis: https://www.marktechpost.com/2025/07/11/mistral-ai-releases-devstral-2507-for-code-centric-language-modeling/

Devstral Small model weights at Hugging Face: https://huggingface.co/mistralai/Devstral-Small-2507

Devstral Medium will also be available on Mistral Code ( for enterprise customers and on finetuning API: https://docs.mistral.ai/guides/finetuning/

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