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Claude Fable 5.1

Claude Fable 5.1 by Anthropic: intelligence index 91.7, $10.00 in / $50.00 out per 1M tokens, 1M context, with a source on every number.

Vendor
Anthropic
Intelligence index
91.7
Price per 1M tokens
$10.00 in · $50.00 out
Context
1M tokens
Released
2026-09-01

Sources