Degraded performance for multiple models
The issue affecting Claude Opus 5 has been resolved. Impact occurred from 16:11 to 18:23 UTC.
- Incident ID
- #9c32dfc5
- Impact
- minor
- Components
- anthropic
Updates
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investigating Aug 19, 2026, 12:20 AM GMT+08:00
We are investigating reports of degraded performance affecting multiple models. We will provide an update as soon as possible.
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investigating Aug 19, 2026, 12:20 AM GMT+08:00
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.
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investigating Aug 19, 2026, 1:12 AM GMT+08:00
We are investigating elevated errors on requests to Claude Opus 5. We will provide an update as soon as possible.
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monitoring Aug 19, 2026, 2:26 AM GMT+08:00
A fix has been implemented and we are monitoring the results.
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resolved Aug 19, 2026, 3:01 AM GMT+08:00
The issue affecting Claude Opus 5 has been resolved. Impact occurred from 16:11 to 18:23 UTC.