Mistral AI · Mistral AI
Devstral 2
ActiveAgentic coding specialist, 72.2% SWE-bench Verified; 256K context for whole-repo sessions. Devstral Small 2 ships open-weight (modified MIT).
About this version
Devstral 2 is the latest reasoning‑tier model in Mistral’s Devstral family, released on 1 December 2025 and currently active. It offers a 256 000‑token context window designed for whole‑repository sessions and is positioned as an agentic coding specialist, achieving a 72.2 % verification rate on the SWE‑bench benchmark. The model is distributed under an open‑weight license based on a modified MIT terms.
- API string
- devstral-2512
- Context window
- 256K ctx
- Tier
- Reasoning
- Released
- Dec 1, 2025
Release & change timeline
1 event- Release
Devstral 2 released
Agentic coding model, 72.2% SWE-bench Verified, 256K context.
Report an issue with Mistral AI
Posts to your status feed
Pick the closest match below, edit the body, and post. Your report carries the #mistral tag automatically so it surfaces here + in the trending-tags rail. Reporting also follows Mistral AI so you’ll get status updates.
Part of the Mistral AI version timeline. Catch Me Up — everything that changed across AI & smart home ↗