What visitors reported during this incident
No visitor reports were filed for this incident.
Having problems with Anthropic now? Check the current statusAffected services
Updates (5)
- Aug 18, 2026, 07:01 PMDegraded performance for multiple models
The issue affecting Claude Opus 5 has been resolved. Impact occurred from 16:11 to 18:23 UTC.
Anthropic ↗ - Aug 18, 2026, 06:26 PMDegraded performance for multiple models
A fix has been implemented and we are monitoring the results.
Anthropic ↗ - Aug 18, 2026, 05:12 PMDegraded performance for multiple models
We are investigating elevated errors on requests to Claude Opus 5. We will provide an update as soon as possible.
Anthropic ↗ - Aug 18, 2026, 04:20 PMDegraded performance for multiple models
We 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.
Anthropic ↗ - Aug 18, 2026, 04:20 PMDegraded performance for multiple models
We are investigating reports of degraded performance affecting multiple models. We will provide an update as soon as possible.
Anthropic ↗
What to do next
- Verify your own services recovered cleanly. Some upstream outages leave queues or caches in a degraded state, run smoke tests before declaring green internally.
- Save the post-mortem. Vendors usually publish a detailed RCA 1-3 days later. We'll add it to this page when it appears.
- Watch the provider going forward. Follow Anthropic's status feed →
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