OpenAI incident
Elevated latency and error rates for ChatGPT 5.5 Thinking
Minor Vendor's status page →
Resolved after 1 hour 17 minutes, affecting Conversations, on May 21, 2026.
We are continuing to monitor recovery.
Affected components
Conversations
Update timeline
- identified May 21, 2026, 10:05 PM UTC
We have identified that users are experiencing elevated latency and error rates for ChatGPT 5.5 Thinking. We are working on implementing a mitigation.
- monitoring May 21, 2026, 10:25 PM UTC
We have applied the mitigation and are monitoring the recovery.
- monitoring May 21, 2026, 10:57 PM UTC
We are continuing to monitor recovery.
- resolved May 21, 2026, 11:22 PM UTC
All impacted services have now fully recovered.
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