Anthropic blocks top AI models globally after US directive
US bars foreigners from Fable 5 and Mythos 5, triggering global shutdown.
Anthropic has shut down access to its most advanced AI models, codenamed Fable 5 and Mythos 5, following a U.S. government directive that bars foreign nationals from using them. The company implemented a global disablement, stating it cannot reliably filter users in real time. The ban was reportedly prompted by discussions between Anthropic and Amazon’s CEO, sparking backlash from cybersecurity experts who warned it removes critical tools from defenders and creates market uncertainty.
This action is the latest in a series of tensions between the White House and Anthropic, which have previously backfired when similar restrictions were imposed. The controversy highlights the growing friction between national security concerns and the open deployment of cutting-edge AI. Meanwhile, in a separate development, chemist Tim Cernak is using AI tools and robots to rapidly design drugs for animals—a new field called conservation chemistry—showing AI's diverse applications beyond human-centric models.
- U.S. directive barred foreigners from using Anthropic's Fable 5 and Mythos 5 models.
- Anthropic disabled access globally, citing inability to filter users in real time.
- Cybersecurity experts call for reversal, warning of AI leadership risks and defender disadvantages.
Why It Matters
Restricting advanced AI access could weaken global cybersecurity and stifle innovation in critical applications.