Anthropic Releases Claude Fable 5.2 and Mythos 5.2, Faster and Cheaper
Source Anthropic Claude blog (mirror)
At a glance
Anthropic has upgraded its high-performance AI models, Claude Fable 5.2 and Mythos 5.2. The company says they are better at coding, reasoning (the process by which an AI works out an answer), and understanding images. Output is up to 30% faster than the previous version, and prices have dropped.
Key points
Output speed is up to 30% faster than the previous 5.1 version.
The price has fallen to $8 per million input tokens and $40 per million output tokens.
A fast mode (an optional setting that makes response generation up to 2.5 times faster) has also been added.
Fable is open to general users, while Mythos can be requested only for cybersecurity and life sciences research.
Why it matters
Being faster and cheaper makes it easier to hand difficult technical work to the models.
Original article
Claude Fable 5.2 and Mythos 5.2
Anthropic Claude blog (mirror) · Nov 9, 2026, 9:00 AM GMT+9 · anthropic.com
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