Anthropic cuts off Fable 5 and Mythos 5 access following government order

The U.S. government ordered Anthropic to block access to two AI models called Fable 5 and Mythos 5 due to unspecified national security concerns, and the company complied by cutting off access for all users worldwide, including its own employees. Anthropic stated that the government did not provide detailed information about the security threat and only mentioned potential jailbreak (tricks to make the AI ignore its safety instructions) vulnerabilities verbally, which the company claims were minor.