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MoonshotAI: Kimi Dev 72B

moonshotai/kimi-dev-72b

Released Jun 16, 2025Knowledge cutoff Dec 31, 2024131,072 context

Kimi-Dev-72B is an open-source large language model fine-tuned for software engineering and issue resolution tasks. Based on Qwen2.5-72B, it is optimized using large-scale reinforcement learning that applies code patches in real repositories and validates them via full test suite execution—rewarding only correct, robust completions. The model achieves 60.4% on SWE-bench Verified, setting a new benchmark among open-source models for software bug fixing and code reasoning.

Recent activity on Kimi Dev 72B

Total usage per day on OpenRouter

Completion
8K
Reasoning
5K
Prompt
382

Prompt tokens measure input size. Reasoning tokens show internal thinking before a response. Completion tokens reflect total output length.