mistralai/Devstral-Small-2505

Devstral-Small-2505 is a 24 billion parameter agentic language model developed by Mistral AI and All Hands AI, fine-tuned from Mistral-Small-3.1. It is specifically designed for software engineering tasks, excelling at using tools to explore codebases and editing multiple files. With a 32K token context window (and a base of 128K tokens from Mistral-Small-3.1), it achieves 46.8% on the SWE-Bench Verified benchmark, positioning it as a leading open-source model for code generation and agentic workflows.