Cartesia voices for Vapi assistants

Select Cartesia as the voice provider in Vapi and choose a voice, or add your Cartesia API key to use the voices you've cloned.
Read Vapi's Cartesia guideGet an API key

What you can do

Voices from the Cartesia library

Choose a Cartesia voice for an assistant in the Vapi dashboard or API.

Your own cloned voices

Add your Cartesia API key in Vapi, and the voices you've cloned in Cartesia appear in your assistant's voice list.

Cartesia transcription

Set Cartesia as the assistant's transcriber with the ink-whisper model.

Get started

  1. Open your assistant in Vapi and choose Cartesia as the voice provider.
  2. Pick a voice from the list.
  3. To use a voice you've cloned, add your Cartesia API key to Vapi first.

Documentation

Get an API key

Customer story

Vapi chooses Cartesia as their default provider for voice agents

Vapi chooses Cartesia as their default provider for voice agents. Vapi enables anyone to build, test, and deploy high quality conversational voice agents in minutes.

Read the story

More integrations

All integrations
Built in

Retell AI

Choose Cartesia voices for Retell phone agents, including voices you've cloned.

  • Sonic
Read the partner's docs
Built in

Thoughtly

New Thoughtly phone agents use Cartesia voices by default, and you can clone a voice from a short sample in the app.

  • Sonic
Read the setup guide
Official

LiveKit

Add Cartesia text to speech and speech to text to a LiveKit agent with the official plugin, or through LiveKit Inference without a separate Cartesia account.

  • Sonic
  • Ink
See the integration

Get started today

Talk to an expert.

Connect with a member of our team and learn how Cartesia can help you build world-class voice experiences.

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Access our models via API and bring a voice agent into production in minutes.

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