Retired from the Mistral API, so this is only for developers happy to self-host the open weights.
Kenning's take
What it does
Devstral 2 is Mistral's coding model family for software agents, released in December 2025 in a 123B version and a 24B Devstral Small 2. Mistral reported 72.2% on SWE-bench Verified for the larger model, with a 256K token context. Both are retired from the Mistral API and replaced by Mistral Medium 3.5, but the open weights are still on Hugging Face.
- Devstral 2 (123B) and Devstral Small 2 (24B)
- 256K token context window
- 72.2% on SWE-bench Verified, per Mistral
- Modified MIT licence (123B) and Apache 2.0 (24B)
- Launched with the Mistral Vibe CLI
Who it suits. Developers who want open coding models they can run on their own hardware.
Key facts
- Category
- AI models
- Part of
- Le Chat (Vibe by Mistral)
- Made by
- Mistral AI
- Released
- 9 December 2025
- How to get it
- open weights on Hugging Face; retired from the Mistral API on 2026-07-31 (Devstral Small 2 on 2026-03-31)
- Works on
- open weights
- In the UK
- Yes
- Free plan
- open weights
- API price
- none: retired from the Mistral API, replaced by Mistral Medium 3.5
FAQ
When was Devstral 2 released?
Mistral released Devstral 2 on 9 December 2025.
Can I still use Devstral 2 in the Mistral API?
No. Mistral retired it from the API on 31 July 2026 and points users to Mistral Medium 3.5. The weights can still be downloaded.
Is Devstral 2 open source?
Devstral 2 uses a modified MIT licence and Devstral Small 2 uses Apache 2.0.
Facts from the maker's own pages and the sources listed. Checked 2026-10-11.
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