Elevated errors for multiple models

What to do

• Check whether you use Anthropic claude.ai, Claude API (api.anthropic.com), Claude Code, Claude Cowork. Check your stack

  Paste a package.json, lockfile, Terraform or a list of domains at down.guide/stack to see every provider you depend on.

• Confirm your retries, queues and scheduled jobs caught up after the 3h 24m it lasted.

  Anything that failed between 2026-08-24 05:06 UTC and 2026-08-24 08:30 UTC may need a replay.

• Subscribe to Anthropic's feed to hear about the next one first. RSS feed

  https://down.guide/feed?provider=anthropic works in Slack (/feed subscribe), Discord feed bots and any RSS reader.

Updates from Anthropic 5

1. investigatingAug 24, 2026, 5:06 AM UTC

   We are investigating elevated errors on requests to Claude Mythos 5, Claude Fable 5, Claude Opus 5, and Claude Opus 4.8. We will provide an update as soon as possible.

   provider

2. identifiedAug 24, 2026, 5:27 AM UTC

   We have identified the cause of elevated errors on requests to Claude Mythos 5, Claude Fable 5, Claude Opus 5, and other Claude models and are working on a fix. We will provide an update as soon as possible.

   provider

3. identifiedAug 24, 2026, 6:42 AM UTC

   We are continuing to work to resolve issues causing elevated requests on multiple models. We will provide an update as soon as possible.

   provider

4. identifiedAug 24, 2026, 7:47 AM UTC

   At this time, we have seen errors stabilize on Opus 5 and Fable 5, and are working to fully resolve success rates on all affected models. We will provide an update as soon as possible.

   provider

5. resolvedAug 24, 2026, 8:30 AM UTC

   This issue has been resolved. From 9:50pm PT / 04:50 UTC through 00:36am PT / 07:36 UTC, users saw elevated errors on requests to Claude models, including Claude Opus 5 and Fable 5.

   provider

Corrections

None so far.

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