Telephony API

Text to speech API

The text to speech API allows you to create audio messages from any text, in a wide range of languages.

The audio files you generate can be uploaded as custom messages in your IVR apps. The service is free, unless you need to create significant amounts of files.

How to use the Text to speech API

This is how you can create a voice file from a text, in a language and voice of choice.


  • See available voices
    Get a list of available voices. Each voice is in a specific language.
  • Convert text to speech
    Send us a text and tell us what voice you want to use.
  • Download
    Download the .wav file from the URL provided in the API response.

You can now upload the new audio file as a Custom Message in your IVR app.

Audio Samples:

Here are two audio samples generated using the Text to Speech API, showcasing different voice options:

USA English Female

Language: en-US

Language Label: English (USA)

Voice: en-US-Journey-F

Gender: Female

Speaker: A

UK English Male

Language: en-GB

Language Label: English (United Kingdom)

Voice: en-GB-Neural2-B

Gender: Male

Speaker: A