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Resolved Anthropic (Claude) · degraded service

Degraded performance for multiple models

Posted 18 Aug 16:20 UTC, last seen 6 Oct 12:21 UTC.

Anthropic (Claude) status pageOn the status board
Unknown Duration: the provider stated no start
5Updates 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. 18 Aug 19:01 UTCResolvedThe issue affecting Claude Opus 5 has been resolved. Impact occurred from 16:11 to 18:23 UTC.
  2. 18 Aug 18:26 UTCMonitoringA fix has been implemented and we are monitoring the results.
  3. 18 Aug 17:12 UTCUpdateWe are investigating elevated errors on requests to Claude Opus 5. We will provide an update as soon as possible.
  4. 18 Aug 16:20 UTCUpdateWe are investigating elevated errors on requests to Claude Mythos 5, Claude Fable 5, Claude Opus 5, Claude Sonnet 5, Claude Haiku 4.5, and other Claude models. We will provide an update as soon as possible.
  5. 18 Aug 16:20 UTCInvestigatingWe are investigating reports of degraded performance affecting multiple models. We will provide an update as soon as possible.

Around it

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

Earlier incidents in the 14 days before

What changed

First observed 14 Oct 2026

No field changes in the recorded history.

Cite this recorded revision to keep the same title, summary, facts and links when the page changes.

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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

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