Outage in OpenAI ChatGPT
Codex 5.5 engines are experiencing high error rate
Resolved Minor
May 13, 2026 - Started about 1 month ago
- Lasted about 2 hours
Incident Report
Summary AI Generated
OpenAI's Codex 5.5 engines experienced elevated error rates affecting both ChatGPT and Codex services, with free users encountering high error rates and all Codex users experiencing degraded latency. The incident lasted 2 hours, during which the team identified the issue as specifically impacting gpt-5.5 performance. A mitigation was successfully applied and the service recovery was being monitored.
We are currently experiencing elevated error rates for gpt-5.5.
Components affected
OpenAI ChatGPT ChatGPT OpenAI ChatGPT CodexLatest Updates ( sorted recent to last )
MONITORING
about 1 month ago - at 05/13/2026 09:34AM
We have applied the mitigation and are monitoring the recovery.
IDENTIFIED
about 1 month ago - at 05/13/2026 09:00AM
High error rate on codex gpt 5.5 for free users. Degraded latency on gpt 5.5 for all codex users.
INVESTIGATING
about 1 month ago - at 05/13/2026 08:18AM
We are currently experiencing elevated error rates for gpt-5.5.
Latest OpenAI ChatGPT outages
Elevated error rates for GPT 5.5 in Codex - about 24 hours ago
Disruption in service availabilty for Go users - 5 days ago
Voice mode availability impacted - 7 days ago
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