Kimi K2 Thinking
6 November 2025
Kimi K2 Thinking from Moonshot, language model published 2025-11-06. Notable for: sota improvement.
Where it runs
| Provider | Model id | Context | Input | Output |
|---|---|---|---|---|
| OpenRouter | moonshotai/kimi-k2-thinking | 262K | $0.60/M | $2.50/M |
Abstract
Today, we are introducing Kimi K2 Thinking, our best open-source thinking model. Built as a thinking agent, it reasons step by step while using tools, achieving state-of-the-art performance on Humanity's Last Exam (HLE), BrowseComp, and other benchmarks, with major gains in reasoning, agentic search, coding, writing, and general capabilities. Kimi K2 Thinking can execute up to 200 – 300 sequential tool calls without human interference, reasoning coherently across hundreds of steps to solve complex problems. It marks our latest efforts in test-time scaling, by scaling both thinking tokens and tool calling steps. K2 Thinking is now live on kimi.com under the chat mode [1], with its full agentic mode available soon. It is also accessible through the Kimi K2 Thinking API.
Sources: Epoch AI, OpenRouter. This entry was generated from a dataset and has not been edited by hand.