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Moonshot AI Unveils Kimi K2: Revolutionary Open-Source Model

11/7/2025

Summary

Story summary

Moonshot AI has launched Kimi K2 Thinking, an open-source AI model for complex reasoning and tool use.
The model can autonomously execute 200–300 sequential tool calls and achieves state-of-the-art scores on benchmarks, including 44.9% on Humanity’s Last Exam and 60.2% on BrowseComp.
The model excels in agentic programming, creative writing, and emotional responses, showing improvements over its predecessors.
It uses native INT4 quantization for enhanced performance and efficiency.

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Story summary

Moonshot AI has launched Kimi K2 Thinking, an open-source AI model for complex reasoning and tool use.
The model can autonomously execute 200–300 sequential tool calls and achieves state-of-the-art scores on benchmarks, including 44.9% on Humanity’s Last Exam and 60.2% on BrowseComp.
The model excels in agentic programming, creative writing, and emotional responses, showing improvements over its predecessors.
It uses native INT4 quantization for enhanced performance and efficiency.