SOURCE RECORD · obs_b430bb7e9309…

Anthropic · Release notesSource update

Substantive changesRecordedObservation date 2026-10-01(day precision)Revision r2

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Summary

New Claude Sonnet 4.5 model deprecation announcement, specifying the retirement date as 2026-11-30, which will have a significant impact on users using this model.

LLM generation

LLM The summary is machine-generated; please refer to the original text for important information.

Permanent link

https://daily.maas.click/item/obs_b430bb7e93094c95e3dcbaa684cab49865b04b24715f4529e84542f0661fa5d8/

Source page

https://docs.anthropic.com/en/release-notes/api ↗

This link points to the source's official page (not content on this site).