OpenAI experienced a minor incident on May 27, 2026 affecting Codex Web and Codex API and 1 more component, lasting 13h 2m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- identified May 27, 2026, 05:57 PM UTC
Status: Identified We're investigating an issue causing Codex context compaction to be slower than expected. Affected components Codex Web (Degraded performance) CLI (Degraded performance) App (Degraded performance) VS Code extension (Degraded performance) Codex API (Degraded performance)
- investigating May 28, 2026, 12:14 AM UTC
Status: Investigating We are still investigating the issue for the listed services. Affected components Codex Web (Degraded performance) CLI (Degraded performance) App (Degraded performance) VS Code extension (Degraded performance) Codex API (Degraded performance)
- investigating May 28, 2026, 01:47 AM UTC
Status: Investigating We are still investigating the issue for the listed services. Affected components Codex Web (Degraded performance) CLI (Degraded performance) App (Degraded performance) VS Code extension (Degraded performance) Codex API (Degraded performance)
- identified May 28, 2026, 02:31 AM UTC
Status: Identified We've identified a configuration error that caused Codex to be slow. We are working on implementing the mitigation at the moment. Affected components Codex API (Degraded performance) Codex Web (Degraded performance) CLI (Degraded performance) App (Degraded performance) VS Code extension (Degraded performance)
- monitoring May 28, 2026, 03:09 AM UTC
Status: Monitoring We have applied the mitigation and are monitoring the recovery. Affected components Codex Web (Degraded performance) CLI (Degraded performance) App (Degraded performance) VS Code extension (Degraded performance) Codex API (Degraded performance)
- resolved May 28, 2026, 06:59 AM UTC
Status: Resolved All impacted services have now fully recovered. Affected components Codex Web (Operational) CLI (Operational) App (Operational) VS Code extension (Operational) Codex API (Operational)