Outage in Claude AI
Elevated errors for requests to Claude Opus 4.5
Resolved MajorIncident Report
We are currently investigating this issue.
Components affected
Claude AI claude.ai Claude AI api.anthropic.comLatest Updates ( sorted recent to last )
RESOLVED
2 days ago - at 11/25/2025 11:44PM
This incident has been resolved.
MONITORING
2 days ago - at 11/25/2025 09:28PM
A fix has been implemented and we're monitoring recovery.
IDENTIFIED
2 days ago - at 11/25/2025 09:16PM
We are aware of an issue affecting a large number of users causing 529 overloaded responses from our APIs. We've identified the issue and are working on mitigations. We'll be back shortly - please bear with us.
INVESTIGATING
2 days ago - at 11/25/2025 08:56PM
We are currently investigating this issue.
source IsDown
Claude service outage due to overload
Reports started 6 minutes before official outage was reported
Users report repeated '500' and '529' errors, 'overloaded' notices, and failures with Claude code API. Issues likely due to capacity constraints and heavy traffic.
Latest Claude AI outages
Model usage attribution issues - 3 days ago
Increased error rate on Claude 4 Sonnet - 9 days ago
Elevated errors on claude.ai - 10 days ago
Issues with Claude.ai Research - 10 days ago
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