China’s open-weight AI model Kimi K3 is an impressive piece of engineering, the biggest of its kind ever released, running rings around open-weight rivals on coding and priced to undercut Silicon Valley.The White House has accused its maker, Moonshot AI, of distilling it from Anthropic’s Fable, although officials have offered no evidence and sceptics have reasonable doubts. The pattern is better evidenced. Anthropic said in February that it had traced more than 16 million unauthorised Claude exchanges to Chinese labs. In June, it told the US Senate that Alibaba’s Qwen lab ran a further 28.8 million exchanges in six weeks.Subscribe to gift this articleGift 5 articles to anyone you choose each month when you subscribe.Subscribe nowAlready a subscriber? Fetching latest articles