Retell AI incident

7% calls got abnormally high latency

Resolved on October 2, 2025.

resolved Oct 02, 2025, 08:27 PM UTC

Incident range: 6:30am - 11am PST impact: around 7% of the calls are having abnormally high latency post mortem: Some AWS automatic patches to our transcription clusters caused the container to lost GPU access, and used CPU for transcription, causing extra long latency there. Most calls are routed to the backup endpoint which was working fine, but around 7% did not trigger the fallback there. We are updating the containers to ensure it does not get impacted with the automatic patches.

Started
Oct 02, 2025, 01:30 PM UTC
Resolved
Oct 02, 2025, 01:30 PM UTC
Duration
–
Detected by Pingoru
Oct 02, 2025, 01:30 PM UTC

Update timeline

  1. resolved Oct 02, 2025, 08:27 PM UTC

    Incident range: 6:30am - 11am PST impact: around 7% of the calls are having abnormally high latency post mortem: Some AWS automatic patches to our transcription clusters caused the container to lost GPU access, and used CPU for transcription, causing extra long latency there. Most calls are routed to the backup endpoint which was working fine, but around 7% did not trigger the fallback there. We are updating the containers to ensure it does not get impacted with the automatic patches.

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