Reference Source

Anthropic Claude claude-fable-5-1 — lifecycle date releaseDate is now 2026-09-01

For Anthropic Claude claude-fable-5-1, product is claude; field changed is releaseDate; new value is 2026-09-01; detected is 2026-09-02, verified against its source on 2026-09-02.

Product
claude verified
Product label
Anthropic Claude verified
Release cycle
claude-fable-5-1 verified
Field changed
releaseDate verified
New value
2026-09-01 verified
Detected
2026-09-02 verified
Sourceendoflife.date
Verified
Review by
DatasetSoftware end-of-life date changes — which dates moved and what they were before

What the source says

{"name":"claude-fable-5-1","codename":null,"label":"Claude Fable 5.1","releaseDate":"2026-09-01"

endoflife.date, retrieved 2026-09-02

Source

Last verified against source: . Due for re-check by . This page as Markdown · OKF bundle · full dataset as JSON.

This one changes, and we watch it.Software end-of-life date changes — which dates moved and what they were before is re-read on a schedule and every change is dated. Subscribe: Atom feed · JSON · what has changed so far.