Anthropic's Fable 5 feels dumber after subscription rollout: thinking tokens dropped sharply

HankYeomans · x · 2026-09-21

A user noticed a marked performance drop after Anthropic made Fable 5 permanently available in subscription plans. Measuring five different ways, they found the August version produced dramatically fewer thinking tokens than July, suggesting inference budgets were quietly cut after the subscription rollout.

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