Calls are degraded on Daily...

Update timeline

1. investigating Feb 25, 2026, 03:27 PM UTC

   We are seeing calls being dropped on the Daily channel with ended reason "call.in-progress.error-vapifault-worker-died". The team is looking into it and will update here.

2. resolved Feb 26, 2026, 01:59 AM UTC

   We have not seen the issue since ~3:50pm today. We have determined the root cause and are rolling out a fix to improve stability in the daily channel. Incident Report — Daily Channel Call Failures (February 25, 2026) Impact Between 7:27 AM – 3:59 PM PST, approximately 19,527 calls failed on the Daily channel due to call worker failures. All Daily channel users were impacted. The Weekly channel was not affected. Timeline (all times in PST) 7:27 AM — Degraded call reliability detected on the Daily channel. Status page updated and investigation begins immediately. 8:33 AM — Issue escalated. Team recommends affected customers switch to the Weekly channel while investigation continues. Status page updated. 9:04 AM — Team begins proactive outreach to guide affected customers to the Weekly channel. 10:55 AM — Additional call failures observed on Daily after a brief period of stability. Investigation continues. 11:00 AM — Rolled back previous deployment. Did not observe any significant improvement. 1:30 PM — Continued investigating the issue. 3:59 PM — No further issues observed. 6:00 PM — Released a fix to improve stability in the Daily channel. Incident resolved. What Went Well The issue was detected and acknowledged quickly. A dedicated incident response was organized promptly to focus investigation. Teams were notified early and guided affected customers to switch to the Weekly channel. Action Items Isolate background operations from call handling Strengthen deployment validation Improve resilience under load Expand monitoring and alerting Note This report is intended as a summary of the incident timeline, impact, and immediate action items. A deeper root cause analysis is available upon request. This issue impacted the Daily channel only. Customers desiring increased stability (at the cost of delayed access to features) can switch to the Weekly channel by navigating to Organization Settings on the Vapi Dashboard and changing the Channel to "weekly".

3. investigating Feb 26, 2026, 01:59 AM UTC

   We have not seen the issue since ~3:50pm today. We have determined the root cause and are rolling out a fix to improve stability in the `daily` channel. # Incident Report — Daily Channel Call Failures (February 25, 2026) ## Impact Between 7:27 AM – 3:59 PM PST, approximately 19,527 calls failed on the Daily channel due to call worker failures. All Daily channel users were impacted. The Weekly channel was not affected. ## Timeline (all times in PST) **7:27 AM** — Degraded call reliability detected on the Daily channel. Status page updated and investigation begins immediately. **8:33 AM** — Issue escalated. Team recommends affected customers switch to the Weekly channel while investigation continues. Status page updated. **9:04 AM** — Team begins proactive outreach to guide affected customers to the Weekly channel. **10:55 AM** — Additional call failures observed on Daily after a brief period of stability. Investigation continues. **11:00 AM** — Rolled back previous deployment. Did not observe any significant improvement. **1:30 PM** — Continued investigating the issue. **3:59 PM** — No further issues observed. **6:00 PM** — Released a fix to improve stability in the Daily channel. Incident resolved. ## What Went Well - The issue was detected and acknowledged quickly. - A dedicated incident response was organized promptly to focus investigation. - Teams were notified early and guided affected customers to switch to the Weekly channel. ## Action Items - Isolate background operations from call handling - Strengthen deployment validation - Improve resilience under load - Expand monitoring and alerting ## Note This report is intended as a summary of the incident timeline, impact, and immediate action items. A deeper root cause analysis is available upon request. This issue impacted the Daily channel only. Customers desiring increased stability (at the cost of delayed access to features) can switch to the Weekly channel by navigating to **Organization Settings** on the Vapi Dashboard and changing the Channel to **"weekly"**.