Kimi K2 Thinking is a chat model trained by Moonshot, with a knowledge cutoff of January 2024, and a context window of 262,144 tokens.

Knowledge cutoffJan 2024
Context window262,144 tokens
Release dateSep 2025

Moonshot's best open-source thinking model. Achieves state-of-the-art performance with major gains in reasoning, agentic search, coding, and writing.

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Kimi K2 Thinking on Zo Computer