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Face-off

Claude Opus 5.5 vs Claude Opus 5

Claude Opus 5.5 versus Claude Opus 5 on list price and published Arena rating. Claude Opus 5.5 Arena 1516 · Claude Opus 5 Arena 1509 Blended list price Claude Opus 5.5 $16.00 and Claude Opus 5 $20.00 per 1M tokens.

Claude Opus 5.5AnthropicArena 1516$16.00 / 1M
Claude Opus 5.5 leads by 8 Arena pointsClaude Opus 5 costs 1.3x more
Claude Opus 5AnthropicArena 1509$20.00 / 1M

Claude Opus 5.5

Anthropic

Input / 1M$4.00Output / 1M$20.00Arena1516Value1931,000 coding edits$24.00

Open model

Claude Opus 5

Anthropic

Input / 1M$5.00Output / 1M$25.00Arena1509Value1741,000 coding edits$30.00

Open model

Claude Opus 5.5 leads by 8 Arena points. Claude Opus 5 costs 1.3x more, moving from Claude Opus 5.5 to Claude Opus 5. The 1,000-edit cost uses a planning assumption of 2,000 input and 800 output tokens, not a measured trace. Share this face-off. The link renders an Open Graph image of the two models.