Voices (Text-to-speech)

Supported voice providers

The provider string is the exact value you pass in voice.provider.

Find a voice in the dashboard

Vapi supports text-to-speech (TTS) voices from many providers. You choose a voice by setting the provider and voiceId on your assistant’s voice configuration.

Set an assistant’s voice

$
curl -X PATCH "https://api.vapi.ai/assistant/ASSISTANT_ID" \
>
  -H "Authorization: Bearer $VAPI_API_KEY" \
>
  -H "Content-Type: application/json" \
>
  -d '{
>
    "voice": {
>
      "provider": "PROVIDER",
>
      "voiceId": "VOICE_ID"
>
    }
>
  }'

For additional API configuration options, see Create Assistant in the API reference.

This page links to every supported provider and shows you how to find a voiceId in the dashboard.

The Voice Library in the Vapi Dashboard lists every voice available to your organization. Browse and preview voices there, then copy a voice’s ID to use on an assistant.

Language support can vary by model and voice. Test your selected voice with the language you plan to use before publishing your assistant.