The Devstral 2 release pairs coding models with a terminal application that can act on a repository. Mistral AI's December 2025 announcement describes Vibe CLI as the interface for searching files, editing code, and running commands, with configurable tool permissionsThe rules governing which tools an agent may call and which need confirmation — the boundary between a mistake and an incident.Full definition →. Developers can select hosted or local model configurations. The smaller Devstral Small 2 is positioned for local deployment under Apache 2.0; the larger Devstral 2 uses a modified MIT license. Together, the models and CLI provide both code-generation capability and the tools needed to apply changes.
Terms in this piece · Glossary
tool permissions — The rules governing which tools an agent may call and which need confirmation — the boundary between a mistake and an incident.
context window — The maximum amount of text a model can consider at once — its working memory for the current conversation or task.
SWE-bench — The standard benchmark for AI coding agents: real GitHub issues from real repositories, scored by whether the agent's patch passes the project's own tests.
AI agent — An AI system that doesn't just answer once but works toward a goal in a loop — taking actions, reading the results, and deciding what to do next.
