Voice and audio

Text to speech

Turn text into natural speech and get back a link to the audio file.

Choose the model, the output format and the speaking rate.

When to use it

Use when you need spoken audio from text: a voiceover line, a narration clip, an announcement, or an audio version of something you wrote. Up to 2,000 characters per call, about two minutes of speech. The audio is returned as a link that works for 24 hours, not as inline data, so download it if you need to keep it. Billed on the UTF-8 byte length of your text, so the exact price is known before the call. To speak in a voice you cloned with voice.clone, pass its voice_id; you can only use voices your own workspace owns. As a rule of thumb, a minute of spoken audio comes to roughly $0.045.

Inputs

Text to speech takes 7 fields, 1 of them required. Anything you leave out falls back to the tool's own default.

How to call it

Connect once and your agent can reach Text to speech the same way it reaches everything else in the catalog. Add Goro as an MCP connector, or paste the setup line into an agent that reads skills.

Or plain HTTP

POST /v1/run

{
  "endpoint": "voice.speak",
  "input": {
    "text": "Your order has shipped and should arrive on Thursday.",
    "model": "s2.1-pro",
    "format": "mp3",
    "normalize": true,
    "mp3_bitrate": 128
  }
}