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Anthropic · Release notesSource update

Substantive changesRecordedObservation date 2026-10-08(day precision)Revision r2

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Summary

Multiple important updates have been added: Claude Haiku 5.5 release, a price reduction for Sonnet 5.5 cache read, API credits features, SDK updates, Compliance API expansion, among others. At the same time, old content has been removed, indicating that there has been substantial progress in Anthropic regarding models, tools, and pricing.

LLM generation

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Source page

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

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