Cartesia Pro Voice Clones in Retell?

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1

Is there any way to use a Cartesia Pro Voice Clone in Retell?

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Under Cartesia voices, I only see the Community Voices and (instant) Voice Clone options. With ElevenLabs pricing going up, I really need another professional voice clone provider available in Retell.

I appreciate your help!

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2

Based on the available documentation, Retell supports voice cloning with Cartesia through the Clone Voice API endpoint(1). When you clone a voice using Cartesia as the provider, you can specify voice_provider: "cartesia" in your API request(1).

However, the documentation indicates that for Cartesia, only 1 audio file is supported for voice cloning (compared to up to 25 files for ElevenLabs)(1). The Clone Voice endpoint accepts these parameters(1):

const voiceResponse = await client.voice.clone({
  files: [fs.createReadStream('path/to/file')],
  voice_name: 'x',
});

(1)

You can specify the voice provider by adding the voice_provider parameter with value "cartesia"(1).

The documentation doesn’t specifically distinguish between Cartesia’s “Community Voices,” “instant Voice Clone,” or “Pro Voice Clone” tiers within the Retell platform. If you’ve created a Pro Voice Clone directly in your Cartesia account and want to use that specific voice ID in Retell, you may need to reference it using the custom voice ID approach, though the exact implementation details for linking pre-existing Cartesia Pro clones aren’t explicitly covered in the available sources.

For alternative professional voice cloning options beyond ElevenLabs and Cartesia, MiniMax is also supported as a voice provider with voice cloning capabilities(1)(2).

3

Hello @Buckets_Blake

I’ve added this as a feature request

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