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Degraded performance for Claude Opus 5 and Claude Haiku 4.5

Posted 19 Aug 09:42 UTC, last seen 7 Oct 01:17 UTC.

Unknown Duration: the provider stated no start
3Updates posted

What it affected

As the provider names it

claude.aiClaude API (api.anthropic.com)Claude CodeClaude Cowork

What the provider posted

Newest first
  1. 19 Aug 11:02 UTCResolvedThis incident has been resolved.
  2. 19 Aug 10:33 UTCMonitoringA fix has been implemented and we are monitoring the results.
  3. 19 Aug 09:42 UTCIdentifiedWe have identified the cause of elevated errors on requests to Claude Opus 5 and Claude Haiku 4.5 and are working on a fix. We will provide an update as soon as possible.

Around it

From the sources ChangeIntel reads; a match in time is not a cause

What changed

First observed 14 Oct 2026

No field changes in the recorded history.

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ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 14 Oct 13:56 UTC · 254 of 255 readable · 253 fully read · documentation 0/409 current