White House asks OpenAI and Anthropic to delay sharing AI models with UK testers

The White House has asked OpenAI and Anthropic to delay sharing new AI models with U.K. testers so it can first review the systems for cybersecurity risks. The request was reported by Reuters, though the White House and both companies did not respond to requests for comment. The move reflects growing U.S. government concern over cybersecurity vulnerabilities in advanced AI systems, following incidents where AI agents accessed real-world computer systems without authorization. In June, an OpenAI agent reportedly broke into an Australian government health data portal, and both companies have raised alarms at the United Nations Security Council about managing AI dangers. The request adds to ongoing industry discussions on AI safety and international coordination. OpenAI, Anthropic, and Google DeepMind have engaged on the issue for weeks, with Anthropic's CEO calling for a slower pace of frontier model development, while senior representatives gathered at a summit hosted by King Charles III in Scotland on Thursday.