Anthropic Pulls Its Most Powerful AI Models After U.S. Bars Foreign Access

“Some things are simply more important than revenue cycles, clickbait, and pre-IPO valuation. America First. Always,” she wrote.

Neither the Pentagon nor the Commerce Department, which reportedly issued the order, responded to a request for comment from TIME. 

Anthropic rolled out its latest AI model, Claude Fable 5, earlier this week, claiming it represents a new level of capability it calls “Mythos-class”—the name it gave to the tier above its previous Opus-class models. 

The company claimed at launch that the model’s capabilities “exceed those of any model we’ve ever made generally available.” The model was particularly effective at identifying software vulnerabilities.  

Experts had warned that the model’s capabilities posed a risk of being used in cyberattacks. Anthropic acknowledged in its release statement on June 9 that “[r]eleasing a model this capable comes with risks,” and said it had introduced safeguards that would block its use for some topics.