openai
Elevated latency and error rates for ChatGPT 5.5 Thinking
Status: resolved | Severity: degraded
Cite this incidentTimeline
Started: 2026-05-21T22:05:52.000Z
Updated: 2026-05-21T23:22:55.000Z
Resolved: 2026-05-21T23:22:55.000Z
Impact scope
Impacted regions: None reported
Impacted models: None reported
Impacted components: None reported
Official sources
Provider: openai
Official incident URL not available for this source.
Updates
resolved
2026-05-21T23:22:55Z
monitoring
2026-05-21T22:57:08Z
monitoring
2026-05-21T22:25:40Z
identified
2026-05-21T22:05:52Z