Microsoft reportedly limited internal use of Claude Fable 5 while legal teams review Anthropic’s 30-day data-retention policy.

Claude Fable 5 gave users access to Mythos-class power, but its hidden safeguards turned a safety feature into a trust problem for Anthropic.

Cybersecurity researchers are complaining that Anthropic's new model Fable has guardrails that are too strict for any cybersecurity work.

Anthropic released a 'safe' version of Claude Mythos — and changed its data retention policy for the model, too.