White House reverses course, UK AISI regains pre-release testing rights for models from three US labs
白宫改口，英国AISI恢复对三大实验室模型的发布前测试权
The White House has reversed its decision requiring U.S. AI companies to stop sharing models with the UK AISI, and the UK AI Safety Institute will resume pre-release safety testing access to the latest models from Anthropic, Google DeepMind, and OpenAI. Last month, after the White House's Office of the National Cyber Director issued the requirement, Anthropic restricted UK officials from reviewing its new Claude Mythos 5.1 model; according to The Telegraph, the decision was reversed after lobbying by AI minister Kanishka Narayan. Narayan will also announce a series of measures in a Monday speech, including amending the Cybersecurity and Resilience Act to strengthen requirements for companies undertaking critical national infrastructure projects to report AI-related safety incidents, and increasing government use of frontier AI to protect Whitehall departments, as well as adding resources for agencies like NCSC to investigate and respond to incidents.
The White House previously required U.S. AI companies to stop sharing models with the UK AISI, and this reversal shows that pre-release testing arrangements between allies remain subject to political dynamics.