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Anthropic · Release notesSource update

Substantive changesRecordedObservation date 2026-09-25(day precision)Revision r2

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Summary

Three new change notes regarding cache diagnostics: the function terminates beta on Claude API and is no longer required for beta header; the response always includes the diagnostics field; the request fingerprint is only stored when the request contains the diagnostics object. These correspond to the official GA of the cache diagnostic function.

LLM generation

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Source page

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

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