Elevated error rates for GPT 5.5 in Codex

Summary

Elevated error rates for GPT 5.5 in Codex

All impacted services have now fully recovered.

• Started

  Jun 11, 2026 · 8:59 PM

• Resolved

  Jun 11, 2026 · 10:28 PM

• Duration

  1h 28m

• Severity

  Minor

• ◆

  Identified

  Jun 11 · 8:59 PM OpenAI

  We have identified that users are experiencing elevated errors when using GPT 5.5 in Codex. We are working on implementing a mitigation.

• ◉

  Monitoring

  Jun 11 · 9:33 PM OpenAI

  We have applied the mitigation and are monitoring the recovery.

• ✓

  Resolved

  Jun 11 · 10:28 PM OpenAI

  All impacted services have now fully recovered.