On November 9thDark Side of the Moon(Moonshot AI)Open SourceThinking Model ——Kimi K2 Thinking。
According to the dark side of the month, Kimi K2 Thinking achieved an excellent performance of 44.9% in the final human examination (HLE), which went beyond advanced models such as GPT-5, Grok-4, Claude 4.5。
However, CNBC quoted sources as saying that Kimi K2 Thinking's training cost was only $4.6 million (note: the current exchange rate is about RMB 327.7 million), lower than the $5.6 million of DeepSeek V3 - in contrast to the fact that the US$ 5.6 million was spent on training for the Kimi K2 Thinking modelOpenAI Investment in related research and development amounts to billions of dollars。

Unlike many closed-source models in the market, Kimi K2 Thinking adopted open-source strategies and issued model weights, training scripts, data matching and assessment tool chains and allowed commercial use. This initiative has significantly reduced the threshold for use by developers and contributed to the spread of AI technology。