# Opus 5.5 uses 37% more tokens per task than Opus 5

Artificial Analysis says Claude Opus 5.5 uses 15.6 million tokens per Coding Agent Index task, compared with 11.4 million for Opus 5. Cached input rises from 10.9 million to 14.6 million, and output more than doubles from 137,000 to 333,000.

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Source: Artificial Analysis · Published 9/23/2026, 18:33:30

On Artificial Analysis’s Coding Agent Index, Claude Opus 5.5 uses 15.6 million tokens per task, 37% more than the 11.4 million used by Opus 5.

Cached input rises from 10.9 million to 14.6 million tokens. Output more than doubles, from 137,000 to 333,000 tokens.

Tags: Claude Opus, Artificial Analysis, Coding Agent Index, Token usage

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