Cartesia (Beta)

Cartesia provides ultra-fast, low-latency text-to-speech with real-time streaming capabilities, optimized for interactive conversational AI applications.

The following example shows a starting tts parameter configuration you can use when you Start a conversational AI agent.

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"tts": {

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"vendor": "cartesia",

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"params": {

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"api_key": "<your_cartesia_key>",

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"model_id": "sonic-2",

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"voice": {

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"mode": "id",

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"id": "<voice_id>"

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},

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"output_format": {

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"container": "raw",

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"sample_rate": 16000

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},

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"language": "en"

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}

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}

paramsrequired

• api_key stringrequired

  The API key used for authentication. Get your API key from the Cartesia Console.

• model_id stringrequired

  Identifier of the model to be used.

• voice objectrequired

  Voice configuration object.

  Show propertiesHide properties

  • mode stringrequired

    Voice selection mode. Use id to select by voice identifier.

  • id stringrequired

    The identifier of the selected voice for speech synthesis.

• output_format objectnullable

  Audio output format configuration

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  • container stringnullable

    Audio container format for the output stream.

  • sample_rate numbernullable

    Default: 16000

    Possible values: 8000, 16000, 22050, 24000, 44100, 48000

    Audio sampling rate in Hz

• language stringnullable

  Target language for speech synthesis.

For advanced configuration options, voice customization, and detailed parameter descriptions, see the Cartesia TTS documentation.