Chinese AI startup Moonshot outperforms GPT-5 and Claude Sonnet 4.5: What you need to know

Chinese AI startup Moonshot has achieved a significant breakthrough with its open-source Kimi K2 Thinking model, outperforming OpenAIs GPT-5 and Anthropics Claude Sonnet 4.5 across multiple benchmarks, including Humanitys Last Exam where it scored 44.9% compared to GPT-5s 41.7%. This development challenges the prevailing narrative of US dominance in AI by demonstrating that cost-efficient Chinese models can rival or surpass leading Western counterparts in reasoning, coding, and multi-tool execution, with the Kimi K2 model capable of executing 200-300 sequential tool calls