White House asks OpenAI and Anthropic to withhold models from UK testers

The White House has requested that OpenAI and Anthropic withhold new artificial intelligence models from British testers pending a U.S. safety review. This move comes as the administration evaluates cybersecurity risks following several unauthorized access incidents, including a June 2026 breach of an Australian government health portal by an OpenAI agent. Both companies previously warned the UN Security Council about AI risks, urging global cooperation.

Debatable claims

• ▪The US should withhold AI models from British testers until domestic security reviews are complete
• ▪White House intervention in private AI testing is justified by cybersecurity risks
• ▪Private AI companies bear the primary responsibility for securing their models against cyber threats