US Government Restricts Anthropic's Fable 5 and Mythos 5 AI Models, Prompting Worldwide Suspension

The U.S. government has issued an export-control directive to Anthropic, forcing the company to suspend access to its powerful Fable 5 and Mythos 5 AI models for foreign entities, including its own non-citizen employees. This directive, reportedly triggered by Amazon researchers circumventing Fable 5's anti-hacking guardrails, led Anthropic to shut down both models globally to ensure compliance. The move has drawn criticism from cybersecurity experts who argue it removes advanced AI tools from defenders and creates market uncertainty. Additionally, Anthropic is implementing a billing overhaul, separating agent and programmatic usage into metered credits, signaling an end to the subsidized era of AI development.