America’s commanding lead in advanced AI is gone. A Chinese moonshot — literally and figuratively — has caught up to models that defined the U.S. frontier just weeks ago, at a substantially lower price. Kimi K3, a massive new model by Beijing-based Moonshot AI, threatens the foundations of America’s AI boom. Its release Thursday dazzled developers, jolted Silicon Valley and reset the AI race overnight. Kimi immediately vaulted into the top tier of global AI, beating Anthropic’s Fable 5 and OpenAI’s GPT-5.6 Sol in front-end coding tests by AI evaluator Arena. In Arena’s broader text ranking, Kimi finished ahead of Anthropic’s Opus 4.8 — the company’s flagship model until Fable 5 arrived in June — while costing 40% less. Unlike the premium U.S. models it’s challenging, Moonshot plans to release Kimi as an open-weight model on July 27 — allowing companies and governments to customize and run it on their own systems.

Full report : Chinese startup Moonshot AI unveils Kimi model it says rivals OpenAI, Anthropic.