Outage in OpenAI ChatGPT
Elevated error rates for GPT 5.5 in Codex
Resolved Minor
June 11, 2026 - Started about 17 hours ago
- Lasted about 1 hour
Incident Report
Summary AI Generated
OpenAI ChatGPT experienced elevated error rates specifically when users attempted to use GPT 5.5 in Codex, affecting both ChatGPT and Codex services for 1.5 hours. The engineering team identified the issue and successfully applied a mitigation, with systems returning to normal operation under monitoring.
We have identified that users are experiencing elevated errors when using GPT 5.5 in Codex.
We are working on implementing a mitigation.
Components affected
OpenAI ChatGPT ChatGPT OpenAI ChatGPT CodexLatest Updates ( sorted recent to last )
MONITORING
about 16 hours ago - at 06/11/2026 09:33PM
We have applied the mitigation and are monitoring the recovery.
IDENTIFIED
about 17 hours ago - at 06/11/2026 08:59PM
We have identified that users are experiencing elevated errors when using GPT 5.5 in Codex.
We are working on implementing a mitigation.
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