Claude Fable 5 (Adaptive Reasoning, Max Effort, Opus 4.8 Fallback)

Anthropicclosedtextvision

66.8Speed (tok/s) · P37 · measured

$7.7Blended $/M tok · P0 · derived

49.7Intelligence index · P98 · measured

8141 msTTFT · measured

1000kContext · list

77Coding index · measured

51Agentic index · measured

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Comparisons (measured vs nearest neighbors): Claude Fable 5.1 (Adaptive Reasoning, Medium Effort, Default Fallback) · Claude Opus 5 (Adaptive Reasoning, Xhigh Effort)

Released 2026-06-09 · catalog data 2026-09-14 · field-level provenance shown per metric above (measured / derived / list, from the catalog sources map); percentiles computed across the 329-model catalog at generation time. Numbers are catalog-sourced and labeled as such — lab-measured lanes stay separate by design. Generated page — do not hand-edit.

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