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US government blocks Anthropic Fable 5 and Mythos 5

18 items2 sourcesupdated 2d agotrend 1

The US government ordered Anthropic to disable access to Claude Fable 5 and Mythos 5 following a Commerce Department directive citing national security concerns over a potential jailbreak vulnerability. Anthropic complied by cutting off all access to both models globally, including for its own employees, though the company disputed the severity of the threat and said the government provided no written details of the vulnerability.