U.S. Orders Anthropic to Suspend Claude Fable 5 Access
๐ Anthropic said it will "abruptly disable" its latest models, Claude Fable 5 and Mythos 5, for all users after receiving a U.S. government directive to suspend access for foreign nationals due to national security concerns. The company said it believes the order reflects a "misunderstanding" and is working to restore access while noting other models remain available. Anthropic said a demonstrated narrow jailbreak identified minor, publicly discoverable vulnerabilities, and emphasized its safety classifiers and guardrails to limit misuse. The move follows findings that Mythos-class models can rapidly convert disclosed software flaws into working exploits, raising concerns about fast weaponization of vulnerabilities.