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Anthropic lowers Fable/Mythos API rates and adds a priced fast mode

Anthropic lists Fable 5.2 and Mythos 5.2 at $8 per million input tokens and $40 per million output tokens, below prior versions. An optional fast mode costs $16 input and $80 output per million tokens. Mythos remains restricted to verified organizations.

Anthropic

Claude Fable/Mythos 5.2 API pricing

Pricing & Access

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1 source

Primary source · Anthropic · November 9, 2026

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