New featureModels ·
Fable returns, and Claude 5 Sonnet joins
Claude FableClaude 5 Sonnet
What it does
Claude Fable came back to the model list alongside Claude 5 Sonnet.
Why it matters
Fable is the one to pick when tone and narrative voice matter more than raw reasoning; Sonnet is the everyday workhorse.
The specs
- Claude Fable
- Anthropic's writing model, tuned for tone, character, and long-form prose. 999,000-token context, 128,000-token output.
- Claude 5 Sonnet
- The everyday workhorse: same 999,000-token context and 128,000-token output, faster and cheaper than Opus.
- Shared
- Both read text and images, support Actions, and offer Fast ($$) through Smartest ($$$$) reasoning.
- Plans
- Gold and Pro.
Fable is the unusual one. Most model choices trade reasoning against cost; Fable trades reasoning against voice, and the difference shows on anything a human reads end to end rather than skims for an answer.