Devstral 2 123B Instruct (2512)

Devstral 2 123B Instruct is Mistral AI's agentic coding model, specifically designed for software development agents that autonomously navigate, understand, and modify codebases. With 123 billion parameters, it's the largest model in Mistral's developer-focused lineup, optimized for complex multi-step coding workflows.

The model excels at tasks requiring deep codebase understanding including bug fixing across multiple files, implementing features that touch various parts of a system, and maintaining consistency across large projects. It supports tool use including file operations, terminal commands, and web browsing for research.

Devstral 2 is designed for AI coding agents and automated development pipelines where a model needs to autonomously reason about complex, multi-file code changes.