Devstral 2 2512
Mistral🇫🇷
mistralai/devstral-2512Devstral 2 2512 is Mistral AI's open-weight agentic coding model (123B-parameter dense transformer, 256K-token context), released December 2025 and built for tool use that explores codebases, edits multiple files, and powers software-engineering agents. It scores 72.2% on SWE-Bench Verified and 61.3% on SWE-Bench Multilingual, positioning it as a top open-source model for project-level coding and long-horizon agent workflows.
Cost rate
0.4x
Context
262K
Released
Dec 9, 2025
Input
TextFile
Output
Text
Support
ReasoningTool callingStructured outputs
Best at
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