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Claude Fable 5.1Grok 4.7

Next to Claude Fable 5.1

Presets

Claude Fable 5.1

192181–203

WeightsClosed

ReleasedSep 2026

Price in / out$10 / $50

Context1M

Core tests taken4 of 8

Grok 4.7

~178estimated

WeightsClosed

ReleasedSep 2026

Price in / out$2.0 / $6.0

Context500K

Core tests taken–

Claude Fable 5.1 leads Grok 4.7 by 14 points, at 6.7× the price (one score is an estimate).

Test by testindependent results · Epoch AI

Claude Fable 5.1Grok 4.7

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Only tests that at least two of these models have taken. Bold rows are the core tests shown on every profile; all of these results inform the index score. Task length (METR) is listed below the chart because it is a duration, not a percentage.