Outage in OpenAI ChatGPT
Elevated error rates on ChatGPT paid plans
Resolved Minor
May 21, 2026 - Started about 16 hours ago
- Lasted about 8 hours
Incident Report
Summary AI Generated
OpenAI ChatGPT experienced elevated error rates affecting paid plan users for 1.5 hours, preventing messages from loading and generating responses with "error in message stream" notifications. Users reported being unable to get responses to their prompts despite being able to type messages, with the service consistently returning error messages instead of functioning normally. The issue was mitigated and the service returned to normal operation after monitoring confirmed recovery.
We have identified that users are experiencing elevated errors for the impacted services.
We are working on implementing a mitigation.
Components affected
OpenAI ChatGPT Web OpenAI ChatGPT ChatGPTLatest Updates ( sorted recent to last )
MONITORING
about 8 hours ago - at 05/21/2026 09:21PM
We are continuing to monitor the recovery.
MONITORING
about 9 hours ago - at 05/21/2026 09:02PM
We are continuing to monitor the recovery.
MONITORING
about 9 hours ago - at 05/21/2026 08:44PM
We are continuing to monitor recovery.
MONITORING
about 9 hours ago - at 05/21/2026 08:25PM
We have applied the mitigation and are monitoring the recovery.
IDENTIFIED
about 9 hours ago - at 05/21/2026 08:17PM
We have identified that some users are experiencing elevated errors for the impacted services.
We are working on implementing a mitigation.
RESOLVED
about 14 hours ago - at 05/21/2026 03:23PM
All impacted services have now fully recovered.
MONITORING
about 15 hours ago - at 05/21/2026 02:52PM
We have applied the mitigation and are monitoring the recovery.
IDENTIFIED
about 16 hours ago - at 05/21/2026 01:52PM
We have identified that users are experiencing elevated errors for the impacted services.
We are working on implementing a mitigation.
Latest OpenAI ChatGPT outages
Elevated latency and error rates for ChatGPT 5.5 Thinking - about 7 hours ago
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Codex 5.5 engines are experiencing high error rate - 9 days ago
Users may experience elevated errors in ChatGPT uploading files and Codex Cloud creating tasks - 11 days ago
Degraded Performance with Codex Cloud Tasks - 14 days ago
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