January 21, 2025

The Kimi k1.5 multimodal thinking model achieves state-of-the-art performance in both long-CoT and short-CoT reasoning tasks, matching or surpassing OpenAI's o1 model and outperforming GPT-4o and Claude 3.5 by up to 550% in various benchmarks. Key features include enhanced mathematical, coding, and multimodal reasoning abilities, as well as innovative reinforcement learning techniques that allow for autonomous expansion of training data through a reward mechanism.

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