Claude Fable 5.2: faster coding help and listed token prices
In brief
According to Anthropic, Claude Fable 5.2 and Claude Mythos 5.2, presented on 9 November, generate answers up to 30 percent faster than the 5.1 versions. Fable is open to all users; Mythos is reserved for organisations in cybersecurity or biomedical research. Both are billed at 8 dollars per million input tokens and 40 dollars for output, twice that in optional fast mode.
What it changes for an SME
If you already use Claude for development, Fable 5.2 has been available since 9 November on Amazon Web Services, Google Cloud, Microsoft Azure and the Claude Platform. According to Anthropic, it improves on Fable 5.1 for coding and, at high effort, matches Opus 5.5 at about half the cost per task, while trailing Gemini 4 Carbon on a business-workflow test; the company still advises starting with Opus 5.5 for everyday development. Mythos 5.2 is not aimed at a typical SME, because access goes through verification programs. Most published results come from Anthropic's own evaluations.
What you can do
- Check whether Fable 5.2 appears in your cloud console under the identifier claude-fable-5-2.
- Compare the cost of a typical coding task against Opus 5.5 before switching, including the fast mode at 16 and 80 dollars.
- Request Mythos only if your work is actually in cybersecurity or life sciences.
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