OpenAI incident

GPT5.5 Performance Degradation

Minor Resolved View vendor source →

OpenAI experienced a minor incident on May 17, 2026, lasting —. The incident has been resolved; the full update timeline is below.

Started
May 17, 2026, 12:15 AM UTC
Resolved
May 17, 2026, 12:15 AM UTC
Duration
—
Detected by Pingoru
May 17, 2026, 12:15 AM UTC

Update timeline

  1. investigating May 15, 2026, 04:11 PM UTC

    Status: Investigating We are investigating the issue for reports of GPT 5.5 performing worse for some users.

  2. monitoring May 16, 2026, 12:35 AM UTC

    Status: Monitoring We have applied the mitigation and are monitoring the recovery.

  3. resolved May 17, 2026, 12:15 AM UTC

    Status: Resolved All impacted services have now fully recovered.