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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}

caution

The parameters listed on this page are validated for use with Conversational AI Engine. Required parameters must be provided as documented. Any additional parameters are passed through directly to the underlying vendor without validation. For a full list of supported options, refer to the Cartesia TTS documentation.

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

  Show propertiesHide properties

  • 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.