Elevated latency in the Responses API

Updates timeline

1. Identified Aug 31, 10:27 PM UTC

   We have identified an issue causing elevated latency for some Responses API requests. We are working on implementing a mitigation.

2. Monitoring Aug 31, 11:13 PM UTC

   We have applied a mitigation and are monitoring recovery.

3. Monitoring Sep 1, 01:46 AM UTC

   We have applied the mitigation and are monitoring the recovery.

4. Identified Sep 1, 03:15 PM UTC

   We have identified elevated latencies impacting Responses API on the US endpoint.

5. Identified Sep 1, 05:36 PM UTC

   We are implementing the mitigation.

6. Monitoring Sep 1, 06:09 PM UTC

   We have applied the mitigation and are monitoring the recovery.

7. Resolved Sep 1, 07:05 PM UTC

   All impacted services have now fully recovered.