Anthropic shuts down Claude Fable 5 and Mythos 5 models

The U.S. government blocked access to Anthropic's Claude Fable 5 and Mythos 5 AI models after Amazon raised concerns about potential jailbreaking for cybersecurity risks. Commerce Department officials pressured Anthropic to stop access, citing threats from foreign actors exploiting model vulnerabilities. Anthropic's safeguards were designed to prevent responses to risky queries but were still deemed insufficient.