Devstral the listed price is a 123-billion-parameter agentic coding model released as Devstral-2-123B-Instruct-2512 in FP8 weights on Hugging Face. It is positioned as a step up from the prior Devstral Small the listed price (24B), with broader generalization to diverse coding prompts and environments. The instruction-tuned variant is fine-tuned for chat, agentic loops, and instruction-following software engineering use cases, and is distributed openly so teams can self-host or route it through gateways such as Vercel AI Gateway.

In practice, the model is aimed at code assistants, autonomous coding agents, and other tool-driven software workflows, with support for codebase exploration, multi-file editing, complex tool integration, and deep repository understanding. It ships with a 256K-token context window and reports 72.2% on SWE-bench Verified, 61.3% on SWE-bench Multilingual, and 32.6% on Terminal Bench the listed price, placing it ahead of GLM 4.6 and Qwen 3 Coder Plus on SWE-bench Verified and trailing larger frontier systems. The combination of strong agentic coding performance, open weights, and long context makes it a practical fit for teams building production code agents that need to reason across large repositories.