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Face-off

Claude Fable 5.1 vs Claude Opus 5

Claude Fable 5.1 versus Claude Opus 5 on list price and published Arena rating. Claude Fable 5.1 Arena 1512 · Claude Opus 5 Arena 1509 Blended list price Claude Fable 5.1 $40.00 and Claude Opus 5 $20.00 per 1M tokens.

Claude Fable 5.1AnthropicArena 1512$40.00 / 1M
Claude Fable 5.1 leads by 3 Arena pointsClaude Fable 5.1 costs 2.0x more
Claude Opus 5AnthropicArena 1509$20.00 / 1M

Claude Fable 5.1

Anthropic

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

Open model

Claude Opus 5

Anthropic

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

Open model

Claude Fable 5.1 leads by 3 Arena points. Claude Fable 5.1 costs 2.0x more, moving from Claude Fable 5.1 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.