Fable 5.1 costs $3.76 per task; Anthropic's cache price cut saves $1.40
ArtificialAnlys · x · 2026-09-02
Artificial Analysis broke down Claude Fable 5.1 (max) economics: $3.76 per Intelligence Index task — 20% above Fable 5 (max) at $3.14 and 1.6x Claude Opus 5 (max) at $2.34 — driven by 1.7x the output tokens of Fable 5.
Anthropic's cut to cache read pricing from $1 to $0.25 per 1M tokens saves $1.40 per task; without it, Fable 5.1 would cost $5.16. At xhigh effort it scores 65 at $2.72 per task, $1.04 less than max effort.
Related event: Tests show Fable 5.1 costs up to 56% more than Fable 5(6 posts)→
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