US lifts export ban on Anthropic's advanced AI models

What happened

The White House lifted its export ban on Anthropic's most advanced AI models, Mythos and Fable, which it had blocked from foreign nationals last month citing security concerns. Anthropic had suspended access to both models in response to the ban.

Why it matters

The reversal underscores the regulatory uncertainty around AI development and deployment. Anthropic had previously refused to let the Pentagon use its systems in fully autonomous weapons or domestic surveillance, a stance that led the federal government to designate the company a national-security risk. This series of events shows how quickly policy positions can shift as the technology advances.

What to watch

Mythos was reportedly capable of finding vulnerabilities in browsers and websites and had been released only to select organizations to help them fix those vulnerabilities. The lifting of the ban means those organizations can once again access the model.