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AI news · Anthropic · Claude

Anthropic releases Claude Fable 5.2 at a 20% lower token price

The new top model is open to all users today, while its twin, Mythos 5.2, goes to vetted security and life sciences groups. Anthropic still recommends Opus 5.5 for everyday work.

By Alexandre S. , 05:40 UTC

Anthropic released two new models on Monday 9 November 2026: Claude Fable 5.2, which any user can reach from today, and Claude Mythos 5.2, which The Verge reports goes first to vetted organisations only. Both share one underlying model. Anthropic says Fable’s safeguards block most cybersecurity tasks and guard against misuse in biology; Mythos lifts some of those limits for organisations admitted to its Life Sciences and Cyber Verification Programs.

Retro-futurist illustration: a striped sunset over a grid horizon under a starry sky, with a microchip standing on the horizon.
Drawn by adtestbench from “Claude Fable 5.2 and Claude Mythos 5.2”,

Anthropic’s post puts the price at $8 per million input tokens and $40 per million output tokens (a token is a chunk of a word, the unit AI models bill by). The 5.1 models cost $10 and $50, The Decoder notes, so both list rates fall by a fifth, though what a user pays still depends on how many tokens a task burns. The company says output arrives up to 30% faster, and an optional fast mode costs twice the standard rate.

Fable 5.2 leads the intelligence index kept by the benchmark firm Artificial Analysis, scoring 65 points to Gemini 4 Carbon’s 60, The Decoder reports. Run at its highest setting, it costs an average of $26.50 a task on that index, about 2.6 times what Opus 5.5 costs. Anthropic still tells most users to start with Opus 5.5 for coding and knowledge work and to step up to Fable for ambitious, open-ended technical work.

On our price sheet, checked on 10 November, the $20 Pro card names no Fable access. The $100 Max and $200 Ultra cards include Fable for up to half of their weekly usage.

For a marketing team on Pro, the cheaper Fable changes little in the app: our sheet finds Fable named only on the $100 and $200 plan cards, and Anthropic itself points everyday work to Opus 5.5.