Anthropic's Mythos Safeguards Stoke Fears of a 'Permanent Underclass'

Anthropic launched Fable 5, a tamer version of the withheld Mythos model, with conservative safety guardrails that automatically revert to Opus 4.8 on sensitive topics. Developers immediately complained the safeguards are hypersensitive, flagging harmless requests like basic biology questions as dangerous, making the model "completely unusable.