Claude Fable 5.1 costs a record $8,523 per benchmark run, up 56%

steipete · x · 2026-09-03

According to Artificial Analysis, running the Artificial Analysis Intelligence Index on Claude Fable 5.1 (max) cost a record-breaking $8,523, a 56.24% increase over Fable 5. Quoting the data, @thdxr notes that assessing model cost is getting really difficult.

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