OpenAI incident

Elevated latency and error rates for ChatGPT 5.5 Thinking

Minor Resolved View vendor source →

OpenAI experienced a minor incident on May 21, 2026 affecting Conversations, lasting —. The incident has been resolved; the full update timeline is below.

Started
May 21, 2026, 11:22 PM UTC
Resolved
May 21, 2026, 11:22 PM UTC
Duration
—
Detected by Pingoru
May 21, 2026, 11:22 PM UTC

Affected components

Conversations

Update timeline

  1. identified May 21, 2026, 10:05 PM UTC

    Status: Identified We have identified that users are experiencing elevated latency and error rates for ChatGPT 5.5 Thinking. We are working on implementing a mitigation. Affected components Conversations (Degraded performance)

  2. monitoring May 21, 2026, 10:25 PM UTC

    Status: Monitoring We have applied the mitigation and are monitoring the recovery. Affected components Conversations (Degraded performance)

  3. monitoring May 21, 2026, 10:57 PM UTC

    Status: Monitoring We are continuing to monitor recovery. Affected components Conversations (Degraded performance)

  4. resolved May 21, 2026, 11:22 PM UTC

    Status: Resolved All impacted services have now fully recovered. Affected components Conversations (Operational)