Elevated errors across ChatGPT, Codex, and the API including the Agents API

Update timeline

1. investigating Sep 29, 2026, 05:52 PM UTC

   We’re investigating elevated errors affecting ChatGPT, Codex, and the API. Some users may experience failed requests, difficulty logging in or signing up, and tasks that do not complete. We’ll share updates as we learn more..

2. investigating Sep 29, 2026, 06:24 PM UTC

   We’re investigating elevated errors affecting ChatGPT, Codex, and the API including the Agents API. Some users may experience failed requests, difficulty logging in or signing up, and tasks that do not complete. We’ll share updates as we learn more..

3. investigating Sep 29, 2026, 07:08 PM UTC

   We’re still investigating elevated errors affecting ChatGPT, Codex, and the API including the Agents API. Some users may experience failed requests, difficulty logging in or signing up, and tasks that do not complete. We’ll share updates as we learn more..

4. monitoring Sep 29, 2026, 07:39 PM UTC

   We have applied the mitigation and are monitoring the recovery..

5. monitoring Sep 29, 2026, 09:09 PM UTC

   We have applied the mitigation and are monitoring the recovery..

6. monitoring Sep 29, 2026, 10:03 PM UTC

   We have applied the mitigation and are monitoring the recovery..

7. monitoring Sep 29, 2026, 10:47 PM UTC

   We have applied the mitigation and are monitoring the recovery..

8. resolved Sep 29, 2026, 11:14 PM UTC

   The issue causing elevated errors across ChatGPT, Codex, and the API has been resolved, and all affected services have recovered. Thank you for your patience while we worked to restore service. The detailed Root Cause Analysis (RCA) will be published in the next 5 business days..

9. resolved Oct 06, 2026, 08:26 AM UTC

   All impacted services have now fully recovered..