# Claude Fable 5.2 Costs Twice as Much as Opus 5.5 Per API Token

By Simon Yoon

Canonical URL: https://www.tokenpost.com/news/technology/55451
Published: 2026-11-12T13:44:08.000Z
Updated: 2026-11-12T13:44:08.000Z
Section: Technology

> Both models have a 1-million-token context window. An offer giving eligible Pro and standard Team seats capped Fable access at no extra cost ends Nov. 17.

Anthropic’s Claude Fable 5.2 costs twice as much as Claude Opus 5.5 per API token, putting a higher price on the model aimed at demanding technical work.

Anthropic announced Fable 5.2 and Claude Mythos 5.2 on Monday, Nov. 9. Fable is aimed at demanding, open-ended technical work. Opus 5.5 is the recommended starting point for most coding and knowledge work, with Fable or Mythos for more demanding tasks.

Fable’s standard API rates are $8 per million input tokens and $40 per million output tokens. Opus 5.5 is listed at $4 and $20 for those measures, respectively. Both models have a 1-million-token context window and a maximum output of 128,000 tokens.

Fable also has an optional Fast mode, priced at $16 per million input tokens and $80 per million output tokens. In Fast mode, the model can generate tokens at up to 2.5 times its standard speed. That figure applies to generation speed, not total task completion time.

Anthropic describes Fable and Mythos as sharing an underlying model with different safeguards. Fable blocks high-risk cybersecurity activity and most research biology tasks. Blocked cybersecurity requests receive responses from Opus 4.8, while blocked biology requests receive responses from Opus 5. Vetted organizations can apply to use Mythos through Anthropic’s Cyber Verification and Life Sciences Verification programs.

Fable is unavailable on Claude’s Free plan. Max and Ultra subscribers, along with premium Team and seat-based Enterprise seats, can use it within weekly limits capped at half those limits. Pro subscribers and standard Team seats normally use usage credits for Fable.

The current launch offer gives eligible Pro subscribers and standard Team seats Fable access at no extra cost, up to half their weekly limits, through Tuesday, Nov. 17, at 2:59 a.m. ET (07:59 UTC). After the offer, those seats return to usage-credit billing if credits are enabled.