Companies/Retell AI/Incidents

Retell AI: Concurrency not cleared up

Affected components: End to End Calling - TelephonyPhone CallEnd to End Calling - Web CallWeb Call

Timeline of updates

1. identified2025-06-09 22:52 UTC

   3:15pm PDT: There starts to have a resource initialization problem with single prompt agents, causing the concurrency counter to pile up and not get cleared, and caused subsequent calls to get rejected 3:30pm PDT: a fix is starting to get rolled out, and we are resetting concurrency counters for everyone to unblock the calls in the meantime.

2. resolved2025-06-09 23:14 UTC

   4:12pm: The fix has been deployed, and we've cleared the concurrency counter again to remove all the effects from the issue.

Impact, status and times are the vendor’s own, as last archived. View on stspg.io (opens in new tab).

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