Anthropic prices Fable 5.2 and Mythos 5.2 at $8/1M input and $40/1M output tokens, down 20% from 5.1; fast mode costs $16/1M input and $80/1M output tokens (Frederic Lardinois/The New Stack)

Anthropic released its latest flagship models, Claude Fable 5.2 and Mythos 5.2, on Monday. The new models show improvements in coding, reasoning, and vision, and according to TechCrunch, they communicate more clearly with users. Anthropic states that Fable 5.2 and Mythos 5.2 generate output up to 30% faster than their 5.1 predecessors, and a Fast mode is available that can speed up token generation by up to 2.5 times.

The pricing for Fable 5.2 and Mythos 5.2 is set at $8 per million input tokens and $40 per million output tokens, which represents a 20% decrease from the 5.1 versions. Fast mode costs $16 per million input tokens and $80 per million output tokens. Fable 5.2 is available on Amazon Web Services, Google Cloud, and Microsoft Azure, while direct access to Mythos 5.2 is limited to organizations in Anthropic's Cyber and Life Sciences verification programs.

While both models share the same underlying architecture, The New Stack reports that Fable ships with stricter biology and cybersecurity safeguards. Anthropic recommends using Claude Opus 5.5 for most coding and knowledge tasks, reserving Fable 5.2 and Mythos 5.2 for daunting technical challenges. According to The Verge, Fable 5.2 is capable of orchestrating agent teams and has solved complex scientific problems, including two open theoretical physics problems.

Brief written by urgent.news from Techmeme, TechCrunch, The New Stack, 9to5Mac, The Verge — 5 reports on this story. Machine-written — may contain errors; check the original before relying on it.