Devstral 2: The best open-weights model for Cline just dropped

Mistral AI has launched Devstral 2, a potent open-source model for agentic coding, achieving a 72.2% score on SWE-bench Verified, rivaling the best closed models while being significantly more cost-efficient. Available in two sizes, Devstral 2 (123B) and Devstral Small 2 (24B), these models boast 256K context windows and support complex, multi-step workflows crucial for modern coding tasks like refactoring and bug fixing. Released under permissive open-source licenses, they offer substantial performance on consumer hardware, with Devstral Small 2 achieving a 68.0% SWE-bench score. The models excel in understanding framework dependencies, tracking state across files, and executing tools with high success rates. During the launch, Devstral 2 is free, with post-launch pricing set at $0.40 input/$2.00 output per million tokens, while Devstral Small 2 is priced at $0.10 input/$0.30 output. The model is integrated with Cline, an IDE tool, and supports multimodal workflows, underscoring its capability to run on accessible hardware and adapt to various deployment needs, marking a significant shift in open-source model accessibility and performance.

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