A small reference with a clear purpose
Fable 5.5 Tracker brings release evidence, availability checks and pricing questions into one readable place. It is maintained as a personal project under the name Fable 5.5 Tracker, with no affiliation to Anthropic.
The aim is to help you inspect what a source actually establishes. A model name, a launch announcement and usable access answer different questions, so we keep them separate.
How content is prepared
AI tools assist with research, organization and drafting. Factual statements are checked against their cited public sources before publication. An AI-generated answer is not treated as an independent source.
We prioritize version-specific official documentation for model identity, release dates and prices. Other claims retain their original scope and uncertainty. We do not imply that we have tested Fable 5.5 or gained private access to it.
- Named sources and review dates accompany factual information.
- Unknown values stay unknown instead of becoming zeros or estimates.
- A source check date is different from a model release date.
- Corrections should explain what changed and why.
Scope and corrections
This is a periodically reviewed reference, not continuous monitoring. Public documentation can change between reviews, and a documentation check is not a test of your account or API access.
If you find an error or a stronger source, send the page address and supporting link. Clear corrections make the reference more useful.