Canonical event

Anthropic releases Fable 5.2 widely and limits Mythos 5.2 access

Anthropic announced Claude Fable 5.2 general availability on 9 November 2026, while access to Mythos 5.2, the same underlying model with different safeguards and distribution controls, is restricted to eligible verification programs. This documents release and permission arrangements, not independently verified benchmark superiority or safe outcomes.