Outage in OpenAI
API users may see increased error rates for GPT-5.4 and GPT-5.5
Resolved Minor
May 19, 2026 - Started about 8 hours ago
- Lasted about 1 hour
Incident Report
Summary AI Generated
OpenAI users experienced increased error rates when using GPT-5.4 and GPT-5.5 models through the API and Chat services. The incident affected API responses and lasted approximately 1.1 hours before a mitigation was successfully applied and the service recovered.
We have identified that users are experiencing elevated errors for the impacted services.
We are working on implementing a mitigation.
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Latest Updates ( sorted recent to last )
MONITORING
about 7 hours ago - at 05/19/2026 11:59PM
We have applied the mitigation and are monitoring the recovery.
MONITORING
about 8 hours ago - at 05/19/2026 11:38PM
We have applied the mitigation and are monitoring the recovery.
IDENTIFIED
about 8 hours ago - at 05/19/2026 11:32PM
We have identified that users are experiencing elevated errors for the impacted services.
We are working on implementing a mitigation.
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