Overbilling for OpenAI-hosted containers in the Agent API

Timeline

1. Sep 19, 2026, 7:52 AM UTC

   All impacted services have now fully recovered.

2. Sep 19, 2026, 5:00 AM UTC

   We have applied the mitigation, and any new sessions would not run into this issue. We are monitoring the recovery.

3. Sep 19, 2026, 1:08 AM UTC

   We are still implementing the mitigation.

4. Sep 18, 2026, 11:22 PM UTC

   We’re continuing to work on a fix for the container overbilling issue. We’re also reviewing affected usage to identify impacted customers and calculate refunds.

5. Sep 18, 2026, 10:29 PM UTC

   We’re investigating an issue causing higher-than-expected charges for OpenAI-hosted containers in the Agent API. We’re working on a fix and preparing refunds for affected customers. We’ll share further updates as we make progress.