OpenAI, Anthropic and Google unite against unauthorized Chinese model copying

OpenAI, Anthropic and Google are sharing information via the Frontier Model Forum to detect adversarial distillation.

Adversarial distillation uses outputs from existing models to train cheaper copycat models and has been used since projects like Stanford's Alpaca.

US authorities estimate the practice costs American AI labs billions of dollars in lost revenue annually, and companies have named specific actors such as Deepseek, Moonshot and Minimax.