Coming just three days after its launch, the sudden block of Anthropic's Fable model has become a larger fight over who decides when an AI system is too powerful for open access.

Anthropic says Mythos won't help users build competing AI models. Critics said the move quietly degrades responses and limits competition.

Anthropic CEO Dario Amodei wants the US government to block risky AI models from deployment, even as his company battles the Pentagon over safety

How Anthropic decides which questions are too dangerous for Claude to answer.

Anthropic limits AI model use, citing safety concerns. But it's also trying to stop open-source models from competing.