Devstral Small 2

Devstral Small 2 is a 24-billion-parameter coding model released by Mistral AI as part of the next-generation Devstral 2 family, sitting alongside a larger 123B variant. The model is published under the permissive Apache 2.0 license, making it open-weight and friendly to self-hosting, custom fine-tuning, and on-premise deployment. Because of its compact size, Devstral Small 2 is intended to run on consumer hardware while still delivering agentic code capability, fitting teams that want local control over their development tooling without relying on cloud-only endpoints.

On real-world software engineering benchmarks, Mistral reports that the broader Devstral 2 family achieves 72.2 percent on SWE-bench Verified, establishing a state-of-the-art position among open-weight code agents with a fraction of the parameters used by competing systems, and framing Devstral Small 2 as a cost-efficient option for end-to-end code automation. The release pairs the model with Mistral Vibe, a native open-source command-line agent that lets developers delegate repository tasks directly from the terminal. Practically, this combination targets engineering teams that want an open, locally deployable coding assistant capable of multi-step agent workflows, custom integration, and tuning for specialized codebases.