Anthropic's most powerful public AI model was taken offline just days after launch. Before the ban, I tested Fable 5 against leading models to see what made it so controversial.
Anthropic's Fable 5 led every major AI benchmark over OpenAI's GPT 5.5 before a US export control directive forced it offline three days after launch.
The US government just forced Anthropic to suspend Claude Fable 5 and Mythos 5 overnight. Here is what every business owner ...
The AI firm said it believes the order may have been prompted by the government’s concerns that the models could be ...