Opus 5.5 uses 15.6M tokens per task, output more than doubles to 333k

ArtificialAnlys · x · 2026-09-24

Artificial Analysis data: Opus 5.5 consumes 15.6M tokens per task, up 37% from Opus 5's 11.4M. Cached input rises from 10.9M to 14.6M, while output more than doubles from 137k to 333k tokens. This explains why per-task cost still rose 21% to $13.04 despite lower token prices.

Related event: Opus 5.5 burns 15.6M tokens per task, costs $13.04 despite price cut(3 posts)→

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