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Anthropic, language model

Claude Fable 5.1

Released Sep 1, 2026. Scored on 5 boards, holding the record on 1.

Released
Sep 1, 2026
Price, in / out
$10.00 / $50.00
per 1M tokens, list price
Blended price
$20.00
3 input tokens per output token
Output speed
72
Tok / s, Oct 20, 2026
Context
1M
tokens
Open weights
No

Scores

The latest published score on each board, ranked against every model we track. Each score links to its source.

Claude Fable 5.1 scores by board
BoardScoreRankRecordDateSourceReadings
Artificial Analysis Intelligence IndexOverall53Max, Default Fallback4 of 4058Claude Opus 5.5Oct 20, 2026artificialanalysis.ai2
LMArena textOverall1501aggregator snapshot3 of 31525Gemini 4 ArgonOct 8, 2026essentras.com1
Artificial Analysis Coding IndexCoding and agents821 of 23RecordOct 20, 2026artificialanalysis.ai1
Humanity's Last ExamReasoning and knowledge46.5%Scale board3 of 467.7%Claude Opus 5.5Oct 19, 2026benchlm.ai1
Output speedSpeed72Max, Default Fallback18 of 26239Claude Haiku 5.5Oct 20, 2026artificialanalysis.ai2

History

Every reading we have stored for Claude Fable 5.1, on each board with more than one.

Artificial Analysis Intelligence Index

  1. Oct 20, 202653
  2. Oct 20, 202653

Output speed

  1. Oct 20, 202669
  2. Oct 20, 202672

Compare with

The closest models on the boards they share with Claude Fable 5.1.

Compare with any model

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