Anthropic's Fable 5 Shifts to Usage-Credit Billing and Mandatory Persona ID Verification July 8

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Following its July 1 redeployment after export controls were lifted, Anthropic's Fable 5 moved to usage-credit billing (instead of flat-rate subscriptions) and now requires mandatory identity verification through Persona, both effective July 8. The shift to metered access plus KYC-style verification is a notable policy change for Anthropic's most capable model. Builders relying on Fable 5 should budget for credit-based costs and an ID-verification gate.