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Vapi Outage History

Every past Vapi outage tracked by IsDown, with detection times, duration, and resolution details.

There were 309 Vapi outages since September 2024. The 232 outages from the last 12 months are summarized below, with incident details, duration, and resolution information.

Minor April 16, 2026

April 2026: Degraded Performance on Inbound Calls

Detected Apr 16, 2026 12:55 PM EDT · Resolved Apr 16, 2026 3:03 PM EDT · Duration about 2 hours

Vapi experienced degraded performance affecting a subset of inbound calls for 2.1 hours. The service disruption was classified as minor and impacted call quality for some users. The incident has been resolved after investigation and remediation by the technical team.

Minor April 14, 2026

April 2026: SIP Infrastructure Outage

Detected Apr 14, 2026 10:11 AM EDT · Resolved Apr 16, 2026 3:03 PM EDT · Duration 2 days

Vapi experienced a major SIP infrastructure outage lasting 1.3 hours that caused in-call failures including problems with call transfers and increased latency. The degradation affected the core calling functionality of the service. The technical team actively investigated and resolved the infrastructure issues.

Minor April 2, 2026

April 2026: Elevated Error Rates with Soniox Transcriber

Detected Apr 2, 2026 7:36 AM EDT · Resolved Apr 2, 2026 1:41 PM EDT · Duration about 6 hours

Vapi experienced elevated error rates with the Soniox transcriber service, causing affected calls to terminate unexpectedly with transcriber failure errors. The incident was classified as minor and lasted 6.1 hours before being resolved.

Major March 19, 2026

March 2026: Elevated Call Failure Rate on Weekly

Detected Mar 19, 2026 7:22 PM EDT · Resolved Mar 23, 2026 9:13 PM EDT · Duration 4 days

Vapi experienced elevated call failure rates for 5.2 hours, classified as a minor incident. The service disruption affected call connectivity and reliability during this period. The team actively investigated and resolved the issue.

Major March 19, 2026

March 2026: Elevated errors in daily and weekly channels

Detected Mar 19, 2026 3:25 PM EDT · Resolved Mar 23, 2026 9:13 PM EDT · Duration 4 days

Vapi experienced elevated call failure rates on their weekly cluster, causing increased errors in daily and weekly channels. The service disruption lasted 1.4 hours while the team actively investigated and resolved the issue.

Minor March 12, 2026

March 2026: Daily channel - Calls & dashboard are impacted

Detected Mar 12, 2026 12:34 PM EDT · Resolved Mar 19, 2026 3:02 AM EDT · Duration 7 days

Vapi experienced degraded performance affecting calls and dashboard functionality. The issue was identified and mitigated at 8:22 AM, restoring normal service operations. The incident lasted approximately 158.5 hours and has been resolved with continued monitoring in place.

Major March 10, 2026

March 2026: Some GPT 5.2 calls failing with inference issues

Detected Mar 10, 2026 8:52 AM EDT · Resolved Mar 23, 2026 9:13 PM EDT · Duration 14 days

A small percentage of calls using GPT 5.2 on Vapi experienced failures due to internal inference errors from OpenAI's side. The issue affected only the GPT 5.2 model while other models remained functional. The incident lasted 222 hours with users advised to switch to alternative models during the outage period.

Minor March 4, 2026

March 2026: Call Degradation on Daily

Detected Mar 4, 2026 11:04 AM EST · Resolved Mar 11, 2026 4:03 AM EDT · Duration 7 days

Vapi experienced call degradation issues specifically affecting the Daily channel for 20 minutes. The service disruption impacted call quality for users on that channel. The incident was monitored and resolved as a minor service issue.

Minor March 3, 2026

March 2026: Vapi Voice "Emma" is temporarily unavailable

Detected Mar 3, 2026 9:35 PM EST · Resolved Mar 11, 2026 4:03 AM EDT · Duration 7 days

Vapi's "Emma" voice experienced service issues that prevented calls from functioning properly with this specific voice option. The incident affected users who had configured their calls to use the "Emma" voice, potentially causing call failures. The issue was resolved after 13.8 hours, with Vapi recommending users switch to alternative voices and implement voice fallbacks during the outage.

Minor February 25, 2026

February 2026: Calls are degraded on Daily channel

Detected Feb 25, 2026 10:30 AM EST · Resolved Mar 4, 2026 3:03 AM EST · Duration 7 days

Vapi experienced degraded call quality on the Daily channel, with calls being dropped due to worker process failures (error: "call.in-progress.error-vapifault-worker-died"). The incident lasted approximately 5 days while the team investigated and resolved the underlying worker stability issues.