Anthropic cuts off Fable 5 and Mythos 5 access following government order
The Verge
Anthropic has restricted access to its Fable 5 and Mythos 5 models after receiving a government directive citing national security concerns.Summary
Anthropic has suspended access to its Fable 5 and Mythos 5 AI models for all users, including its own employees, following an official government order based on national security concerns. The directive mandates that access be restricted for all foreign nationals both within and outside the United States. Anthropic expressed frustration regarding the order, stating that authorities failed to provide specific details or written evidence to support the security claims. The company maintains that the alleged vulnerabilities were minor, comparable to those found in other models like GPT 5.5, and asserted that it had previously implemented robust safeguards and data retention policies to prevent malicious use.
(Source：The Verge)