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Cache diagnostics is out of beta on the Claude API and no longer requires the cache-diagnosis-2026-04-07 beta

BetaUnverifiedAdded Sep 25, 2026

Cache diagnostics is out of beta on the Claude API and no longer requires the cache-diagnosis-2026-04-07 beta header. Include the diagnostics object on a Messages request to opt in; requests that still send the header work as before.

Topics: LLMs, Developer tools

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Also shipped on Sep 23, 2026

Anthropic in September 2026

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