The US government ordered Anthropic to suspend access by foreign nationals to its most capable AI models over national security concerns about cybersecurity vulnerabilities.

Anthropic complied but disputes the directive, arguing the standard would halt all new frontier model deployments across the AI industry.

The company believes the government acted after learning of a jailbreak technique that exploits relatively minor vulnerabilities other models can also discover.

AI-generated summary was reviewed by a CNN editor.

AI company Anthropic has disabled customer access to its most capable systems after the US government ordered it to suspend all use by foreign nationals, Anthropic said in a statement Friday evening. The move is the latest in a series of adverse Trump administration actions targeting the company.