Outage in OpenAI ChatGPT
Codex Context Compaction Latency
Resolved Minor
May 27, 2026 - Started about 14 hours ago
- Lasted about 13 hours
Incident Report
Summary AI Generated
OpenAI experienced a 13-hour incident where Codex context compaction was slower than expected, affecting both Codex and ChatGPT services. The issue was traced to a configuration error that caused performance degradation in Codex operations. The problem was resolved by applying a mitigation fix and monitoring the recovery.
We're investigating an issue causing Codex context compaction to be slower than expected.
Components affected
OpenAI ChatGPT Codex OpenAI ChatGPT ChatGPTLatest Updates ( sorted recent to last )
MONITORING
about 5 hours ago - at 05/28/2026 03:09AM
We have applied the mitigation and are monitoring the recovery.
IDENTIFIED
about 5 hours ago - at 05/28/2026 02:31AM
We've identified a configuration error that caused Codex to be slow. We are working on implementing the mitigation at the moment.
INVESTIGATING
about 6 hours ago - at 05/28/2026 01:47AM
We are still investigating the issue for the listed services.
INVESTIGATING
about 8 hours ago - at 05/28/2026 12:14AM
We are still investigating the issue for the listed services.
IDENTIFIED
about 14 hours ago - at 05/27/2026 05:57PM
We're investigating an issue causing Codex context compaction to be slower than expected.
Latest OpenAI ChatGPT outages
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