Devstral Small 1.1
2025-07-10 · Publisher : Mistral AI · Domain : Artificial Intelligence
Mistral AI releases Devstral Small 1.1, an update to its open agentic coding model (24B, Apache 2.0) that goes from 46.8% to 53.6% on SWE-Bench Verified and handles varied scaffolds better.
What changes
- 53.6% on SWE-Bench Verified, which is 6.8 points more than Devstral Small 1.0 and a new state of the art for an open model without test-time scaling.
- Better generalization to other prompts and code environments; still performs well with OpenHands.
- Support for Mistral's function-calling format and the XML format.
- Architecture unchanged (24 billion parameters).
### Specifications - Context 128k; text only. - License: Apache 2.0. - Availability: API, Hugging Face. - API identifier: `devstral-small-2507`. ### Pricing | Model | Input (USD / M tokens) | Output (USD / M tokens) | |---|---|---| | Devstral Small 1.1 | 0.1 | 0.3 | ### Benchmarks Scores published by the vendor (SWE-Bench Verified): | Model | Scaffold | Score | |---|---|---| | Devstral Small 1.1 | OpenHands | 53.6% | | Devstral Small 1.0 | OpenHands | 46.8% | | DeepSWE | R2E-Gym | 42.2% | | Claude 3.5 Haiku | Anthropic | 40.6% | | GPT-4.1-mini | OpenAI | 23.6% | ### Key takeaways The open choice for a coding agent run locally or on-premises, with a permissive license.
Links
Tags : LLM, Mistral, Devstral, Code, Open Source, Apache 2.0