OpenAI incident
API users may see increased error rates for GPT-5.4 and GPT-5.5
Minor Vendor's status page →
Resolved after 1 hour 5 minutes, affecting Responses and Chat Completions, on May 19, 2026.
We have applied the mitigation and are monitoring the recovery.
Affected components
ResponsesChat Completions
Update timeline
- identified May 19, 2026, 11:32 PM UTC
We have identified that users are experiencing elevated errors for the impacted services. We are working on implementing a mitigation.
- monitoring May 19, 2026, 11:38 PM UTC
We have applied the mitigation and are monitoring the recovery.
- monitoring May 19, 2026, 11:59 PM UTC
We have applied the mitigation and are monitoring the recovery.
- resolved May 20, 2026, 12:37 AM UTC
All impacted services have now fully recovered.
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