Anthropic's second 7/1 drop: Claude Fable 5 and Claude Mythos 5 ship on the same stage; Fable 5 lands Mythos-class

Anthropic's late July 1, 2026 post (paired with the morning 'redeploying-fable-5' post) ships 'Claude Fable 5 and Claude Mythos 5', describing Fable 5 as 'a Mythos-class model that we've made safe for general use' and co-launching Claude Mythos 5. Paired with the morning 'export controls lifted + redeployment + jailbreak framework' narrative, Anthropic's 7/1 Fable 5 is a two-part release: morning for access, evening for positioning.