Claude Fable 5.2 and Mythos 5.2: Price and Access

Claude Fable 5.2 is available today on all platforms, with Claude Mythos 5.2 open only to vetted organisations, Anthropic announced on 9 November 2026; both cost $8 per million input tokens and $40 per million output tokens.

Claude Fable 5.2: price and speed

Anthropic says Fable 5.2 and Mythos 5.2 generate output up to 30% faster than the 5.1 versions and cost less than them.
Standard pricing is $8 per million input tokens and $40 per million output tokens. These are US dollar prices; Anthropic’s page gives no rupee price.
An optional fast mode generates tokens up to 2.5 times faster, at $16 per million input tokens and $80 per million output tokens.

Fable vs Mythos: who can use what

Fable and Mythos are the same underlying model. Fable carries strong cybersecurity and biology safeguards, which is why it is open to all users.
Mythos is for organisations doing beneficial cybersecurity or biomedical work, who can apply through Anthropic’s Cyber and Life Sciences Verification Programs.
Fable 5.2 runs on Amazon Web Services, Google Cloud and Microsoft Azure. Developers use the model name claude-fable-5-2 on the Claude Platform.

Anthropic’s own benchmark results

These are company-reported scores, not independent tests. On the FrontierCode 2.0 coding test Fable 5.2 scored 49.1% at its Xhigh effort setting, against 45.5% for Claude Opus 5.5. On FrontierSWE v2 it scored 69.9% against 62.3%. Anthropic also reports about 55% fewer unnecessary safeguard blocks than Fable 5.1 in early testing.

What this means for you

Anthropic itself advises most users to start with Claude Opus 5.5 for everyday coding and knowledge work, and to move up to Fable or Mythos only for large, open-ended technical tasks. Costs scale with tokens, so test on a small job before committing a team.