We are noticing a bug since an hour or two ago where agents voice gets distorted once the conversation gets started. We confirmed that the issues is reproducible through Vapi's own dashboard when using the "Talk to Assistant". Once the call starts the agents speaks in a normal tone, but after the end user replies the agent voice becomes much deeper and distorted, as if the speed of the voice was tuned down. Confirmed to happen even with Vapi's own Cole agent. For reference we are also using Paige and confirmed to have the same issue.

same issue i just switch to 11labs

yes same switched to another voice

Same please fix Vapi Voice provider

+1

I recorded the issue in this 1min Loom video for reference, I'm experiencing it as well: https://www.loom.com/share/5e6a0a87ae7f43fdb138edf80a169250?sid=7636802e-27f1-4f19-b95b-6a72f1ee2aa6 Sent an email to the support@vapi.ai team a couple minutes ago

Same issue. I have sent an email to Vapi support team regarding this.

i am also facing the same issue, any solution to this problem ??

If you're experiencing slow or distorted Vapi Voices, you can configure a fallback voice provider (such as ElevenLabs) to ensure continuity while the issue is investigated. Here's an example of how to set a fallback plan in your assistant configuration:

json
"voice": {
  "provider": "VapiVoice",
  "fallbackPlan": {
    "voices": [
      { "provider": "ElevenLabsVoice", "voiceId": "your-elevenlabs-voice-id" }
    ]
  }
}

This will automatically switch to ElevenLabs if the primary Vapi Voice fails. For persistent issues, continue to contact Vapi support and monitor their [changelog](https://docs.vapi.ai/changelog) for updates. Sources: - [Voice Fallback Plan Introduced (Changelog 2024-11-24)](https://docs.vapi.ai/changelog/2024/11/24) - [Vapi Voices Documentation](https://docs.vapi.ai/providers/voice/vapi-voices)

Is distorted/slow considered Fail? When can we expect fix, none of the other voice come close. I want to trust VapiVoice 😉

Thank you for your feedback and for sharing your experience. Currently, the documentation does not specify if "distorted/slow" audio is always detected as a failure that triggers the fallback voice. For now, please continue to monitor the [changelog](https://docs.vapi.ai/changelog) for updates on a fix. Could you share if the fallback to ElevenLabs is being triggered automatically when the distortion occurs, or do you have to intervene manually? This will help clarify how the failover is working in your case. Sources: - [Voice Fallback Plan Documentation](https://docs.vapi.ai/voice-fallback-plan) - [Changelog](https://docs.vapi.ai/changelog)

Hey! To help track down this issue, could you share: - The call ID - When exactly this happened (the timestamp) This would really help us figure out what went wrong!