Devstral 2
#162 in Open-Source LLMsMistral AI · v2 · since 9. Dezember 2025 · 2× · last seen Jun 30, 2026
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Momentum
Devstral 2 is an open-weight language model released by Mistral AI (123 billion parameters, dense transformer architecture) designed specifically for agentic software engineering. It supports a 256,000-token context window and achieves 72.2% on the SWE-bench Verified benchmark, positioning it as one of the strongest open-weight coding agent models according to Mistral. The model is released under a modified MIT license and is available via Mistral's API as well as partner platforms such as Hugging Face, vLLM, Amazon Bedrock, and NVIDIA.
Momentum trend
08.06.06.09.
Features
| Key Benchmark (%) | 72.2% on SWE-bench Verified |
| Context Window (Tokens) | 256,000 tokens |
| License | Modified MIT license |
| Multimodality | Not multimodal; text/code-only model (dense transformer, 123B parameters) |
| Platform | Mistral API, Hugging Face, vLLM, Amazon Bedrock, NVIDIA (build.nvidia.com); requires minimum 4 H100-class GPUs |
| Price per 1M Tokens | $0.40 (input) / $2.00 (output) per million tokens after free trial period |
| Release Date | December 9, 2025 |