Devstral 2 and Mistral Vibe CLI
Devstral 2 (123B, 72.2% SWE-bench Verified) and Devstral Small 2 (24B, 68.0%) arrive with an open-source Vibe CLI coding agent.
A large jump from Devstral 1 (46.8%) with 256K context. Devstral 2 uses a modified MIT license, Small 2 uses Apache 2.0, and the Apache-licensed Vibe CLI is Mistral's Claude Code-style terminal agent. Free via API at launch.
- Date
- Tuesday, 9 December 2025
- Lab
- Mistral AI
- Kind
- open-weights
- Access
- open weights
- Price
- Devstral 2 $0.40/$2.00; Small 2 $0.10/$0.30 per 1M tokens (free during launch), Dec 2025
Figures
| Measure | Value | Measured by |
|---|---|---|
| SWE-bench Verified (Devstral 2) | 72.2% 123B | company |
| SWE-bench Verified (Devstral Small 2) | 68.0% 24B | company |
Mistral says up to 7x more cost-efficient than Claude Sonnet on real tasks (company claim).
Sources
This record was checked against its sources on 6 October 2026. How we check