Upgrading agentic coding capabilities with the new Devstral models | Mistral AI

What this post added

Introduces Devstral Small 1.1 and Devstral Medium, enhancing agentic coding capabilities. Devstral Small 1.1, an upgrade to the previous version, is released under Apache 2.0 and achieves 53.6% on SWE-Bench Verified, showing improved generalization and support for Mistral function calling and XML formats. Devstral Medium, available via API, scores 61.6% on SWE-Bench Verified and offers competitive cost/performance, with options for on-premise deployment and custom fine-tuning.