Companies/Vapi/Incidents

Vapi: Increased rate of call failures

Affected components: Vapi APIVapi API [Weekly]Vapi SIPVapi DashboardSIP Outbound

Timeline of updates

1. downtime2026-08-19 18:16 UTC

   We're seeing an increased rate of call failures and the team is actively investigating

2. downtime2026-08-19 18:36 UTC

   We are confirming that calls are not connecting in the US. Our team is still investigating. Next update in 30 min or sooner.

3. downtime2026-08-19 19:01 UTC

   Calls are still failing to connect. Our team has a working hypothesis and we will post as soon as we can confirm the root cause. Next update will be in 30 min or earlier.

4. degraded2026-08-19 19:26 UTC

   We have rolled out a mitigation measure and are seeing improvements in call success rate.

5. degraded2026-08-19 19:55 UTC

   Some customers are reporting concurrency limits issues. We are resetting all limits to zero for all subscriptions. This change will propagate over the next few minutes.

6. degraded2026-08-19 20:02 UTC

   We are seeing recovery on all affected services and have moved to monitoring status.

7. resolved2026-08-19 20:19 UTC

   The incident is resolved.

8. resolved2026-08-20 17:20 UTC

   Incident Report available at https://drive.google.com/file/d/1ORxSZb8NYgVlmPoqnUEdTmlIua3NSl_k/view

Changes Rewindex caught on this incident

• Aug 19Critical incident: Increased rate of call failures

Impact, status and times are the vendor’s own, as last archived.

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