AI giants accused of cloning American models by funnelling real Chinese user queries to them via network of intermediate platforms.

In its most detailed accusation yet, the U.S. government named six Chinese AI companies that it says copied American models. China has dismissed such accusations as groundless.

Chinese AI companies including DeepSeek, Moonshot AI, Alibaba, MiniMax, StepFun and Z.AI face fresh scrutiny after US agencies accused them of using American AI models to improve…