openai
Some users may encounter issues with GPT-5.4-C model in Codex
Status: resolved | Severity: degraded
Cite this incidentTimeline
Started: 2026-04-21T02:34:32.000Z
Updated: 2026-04-21T04:33:18.000Z
Resolved: 2026-04-21T04:33:18.000Z
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
2026-04-21T04:33:18Z
monitoring
2026-04-21T02:34:32Z