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Face-off

Claude Opus 5.5 vs Claude Fable 5.1

Claude Opus 5.5 versus Claude Fable 5.1 on list price and published Arena rating. Claude Opus 5.5 Arena 1516 · Claude Fable 5.1 Arena 1512 Blended list price Claude Opus 5.5 $16.00 and Claude Fable 5.1 $40.00 per 1M tokens.

Claude Opus 5.5AnthropicArena 1516$16.00 / 1M
Claude Opus 5.5 leads by 4 Arena pointsClaude Fable 5.1 costs 2.5x more
Claude Fable 5.1AnthropicArena 1512$40.00 / 1M

Claude Opus 5.5

Anthropic

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

Open model

Claude Fable 5.1

Anthropic

Input / 1M$10.00Output / 1M$50.00Arena1512Value1671,000 coding edits$60.00

Open model

Claude Opus 5.5 leads by 4 Arena points. Claude Fable 5.1 costs 2.5x more, moving from Claude Opus 5.5 to Claude Fable 5.1. 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.