Anthropic outage: Elevated errors for multiple models

Affected components

• Claude API (api.anthropic.com)
• Claude Code
• Claude Cowork
• claude.ai

1. resolvedAug 24, 2026, 08:30 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.

2. identifiedAug 24, 2026, 07:47 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.

3. identifiedAug 24, 2026, 06:42 UTC

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

4. identifiedAug 24, 2026, 05:27 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.

5. investigatingAug 24, 2026, 05:06 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.

What APIStatus.watch saw

Our 5-minute checks didn't record a change in Anthropic's overall status around this incident. Smaller or regional incidents often leave a provider's overall status green.

Other services with incidents at the same time

Overlapping incidents aren't necessarily related.

• GitHub: Elevated errors on Fable 5 due to upstream providerMajor · Aug 24, 2026, 07:12 UTC
• Supabase: 401 errors due to JWT rejectionsMinor · Aug 14, 2026, 02:23 UTC
• Telnyx: Programmable Wireless data loss in AustraliaMinor · Aug 17, 2026, 19:27 UTC
• Akamai: Reporting data availability issues in 'Traffic by Hostname' reportMinor · Aug 20, 2026, 16:43 UTC
• Akamai: Edge Delivery Issues in IndiaMinor · Aug 22, 2026, 11:21 UTC
• Plaid: Elevated API errorsMinor · Aug 24, 2026, 05:36 UTC
• Cursor: Elevated errors for Claude Opus 5Minor · Aug 24, 2026, 05:38 UTC
• Supabase: Error spikes in one of the ap-northeast-2 Supavisor clustersMinor · Aug 24, 2026, 06:02 UTC

How often does Anthropic have incidents?

Anthropic reported 47 incidents in the last 90 days, 21 of them major or critical. A typical incident lasted 1h 4m. See Anthropic's uptime and incident history