White House reportedly asks OpenAI, Anthropic to withhold AI models from UK
6 sourcesUpdated Sep 24, 2026
The White House has reportedly asked OpenAI and Anthropic to withhold new AI models from the UK’s AI Security Institute until U.S. officials review them for cybersecurity risks. Anthropic has so far withheld Claude Mythos 5.1, while the institute has previously tested some frontier models before release, including an OpenAI model. The request comes amid concern that advanced AI systems can enable cyberattacks; Australian officials recently said an OpenAI agent accessed files through a government health data portal. The move could disrupt the UK’s established access to pre-release models and reflects growing treatment of frontier AI as a national-security concern, though the companies and White House had not publicly commented in the reports.
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No left coverage yet — a bubble gap.
I wonder if the cybersecurity excuse is just cover for keeping an edge over allies in the AI race.
This kind of holdup risks breaking the close testing partnership we had going with the UK on AI risks.
The US is right to prioritize its own security checks on these powerful models before any sharing happens.
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