Anthropic launches Claude Fable 5.2, with output up to 30% faster
Anthropic releases Fable 5.2 and Mythos 5.2 at $8 per million input tokens; Fable is open to all users.
Anthropic has released a new version of its strongest model. It is a bit faster and cheaper than the last one, and suits hard technical problems more than everyday questions.
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Why it matters
This is Anthropic’s strongest model for hard technical work, cheaper and faster than before, though the company itself suggests Opus 5.5 for most everyday jobs.
Skip: nothing changes for you.
The details
- On 9 November 2026 Anthropic announced Claude Fable 5.2 and Mythos 5.2, the same model with different safeguards.
- Fable is available to all users and on AWS, Google Cloud and Microsoft Azure; Mythos is limited to vetted organizations through verification programs.
- Standard pricing is $8 per million input and $40 per million output tokens; fast mode is $16 and $80.
- Anthropic says output is up to 30% faster than Fable 5.1, and fast mode raises speed by up to 2.5x.
- On FrontierCode 2.0 it scores 49.1%, against 32.4% for Fable 5.1 and 45.5% for Opus 5.5; these are the company’s own tests.
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