Outage in Anthropic
Elevated errors across many models
Resolved MajorIncident Report
Summary AI Generated
**Anthropic experienced a major outage lasting approximately 4.9 hours** affecting both claude.ai and api.anthropic.com, with elevated error rates impacting multiple models including Opus 5, Sonnet 5, Fable 5, Opus 4.7, and Opus 4.5. Errors fluctuated across models throughout the incident, with partial recoveries followed by renewed spikes before stabilizing around 9:58 UTC. The incident was fully resolved by 10:48 UTC on July 30, 2026.
We are currently investigating this issue.
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Latest Updates ( sorted recent to last )
RESOLVED
2 days ago - at 07/30/2026 10:48AM
This incident has been resolved.
MONITORING
2 days ago - at 07/30/2026 10:23AM
We are also investigating issues with Opus 4.7 and Opus 4.5.
MONITORING
2 days ago - at 07/30/2026 10:03AM
As of 2:58 PT / 9:58 UTC the errors are back to baseline.
IDENTIFIED
2 days ago - at 07/30/2026 08:33AM
As of 01:33 PT / 08:33 UTC we are back to errors across all models.
IDENTIFIED
2 days ago - at 07/30/2026 08:06AM
As of 8:05 UTC / 1:05 PT, Sonnet 5 errors are back to baseline, but we're seeing an increased error rate on Fable 5.
IDENTIFIED
2 days ago - at 07/30/2026 07:33AM
As of 7:32 UTC / 0:32 PT, Opus 5 errors are back to baseline but we're seeing again Sonnet 5's errors up.
IDENTIFIED
2 days ago - at 07/30/2026 06:26AM
All models except Opus 5 have recovered. We're working to recover Opus 5 as well.
INVESTIGATING
2 days ago - at 07/30/2026 05:57AM
We are currently investigating this issue.
Latest Anthropic outages
Degraded performance on Claude Sonnet 5 - 1 day ago
Degraded performance on Claude Opus 4.8 - 1 day ago
Elevated errors across all models - 2 days ago
Elevated errors on Claude Opus 5 and Haiku 4.5 - 5 days ago
Elevated errors on Claude Opus 5 - 5 days ago
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