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Fortune: Beijing startup’s Kimi K3 model challenges Claude and ChatGPT

techJul 18, 202695287

Beijing startup Moonshot on Friday unveiled Kimi K3, an open-weight large language model that Arena platform co-founder Anastasios Angelopoulos said is “the single biggest release of the year” and that appears to be catching up to Anthropic’s Claude and OpenAI’s ChatGPT. Kimi K3 topped Arena’s ranking for front-end coding capability, and Bank of America analysts reported its usage price is the highest yet for a Chinese model but roughly half the cost of OpenAI’s GPT-5.6 Sol. The release came days before Chinese President Xi Jinping opened the World Artificial Intelligence Conference in Shanghai, where Xi called for global cooperation on AI, and coincides with Huawei showing a new Atlas 950 SuperPoD computing system. Moonshot has not disclosed what hardware it used to build K3, though the company is a partner with Huawei, and the model follows other recent Chinese releases such as Zhipu’s GLM-5.2. U.S. firms including Anthropic and OpenAI have accused some Chinese labs of using distillation to extract capabilities from their models, a claim Beijing rejects, while some analysts say market reactions echo the panic after DeepSeek’s 2025 release. If K3’s performance claims hold up across more benchmarks, the model could pressure Anthropic and OpenAI on pricing and market positioning and accelerate adoption of Chinese open-weight models by developers seeking lower-cost options.

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