OpenAI, Anthropic PBC, and Google have initiated a collaborative effort to prevent Chinese competitors from distilling outputs from U.S. frontier AI models. The companies are working together through the Frontier Model Forum, an industry nonprofit founded in 2023 by OpenAI, Anthropic, Google, and Microsoft. This collaboration aims to identify and counteract adversarial data distillation attempts that breach terms of service, according to sources familiar with the matter.