Outage in OpenAI
Codex Context Compaction Latency
Resolved Minor
May 27, 2026 - Started 1 day ago
- Lasted about 13 hours
Incident Report
Summary AI Generated
OpenAI experienced a 13.1-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. 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.
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Latest Updates ( sorted recent to last )
MONITORING
about 15 hours ago - at 05/28/2026 03:09AM
We have applied the mitigation and are monitoring the recovery.
IDENTIFIED
about 16 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 17 hours ago - at 05/28/2026 01:47AM
We are still investigating the issue for the listed services.
INVESTIGATING
about 18 hours ago - at 05/28/2026 12:14AM
We are still investigating the issue for the listed services.
IDENTIFIED
1 day ago - at 05/27/2026 05:57PM
We're investigating an issue causing Codex context compaction to be slower than expected.
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