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Introduction

Voices determine how your AI agent sounds on calls. From natural-sounding English voices to expressive multilingual options, selecting the right voice can dramatically improve the user experience. With our voice settings, you can:
  • Choose from a wide range of tones, accents, and cadences.
  • Select voices optimized for English or other languages.
  • Enable real-time language switching for multilingual callers.
  • Pair voices with specific AI models for best performance.
Voice configuration is quick to set up and can be customized per agent to match your brand’s tone and target audience.

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Assigning a Voice in Your Workflow

To assign a voice to your AI agent:
  1. Click on the inbound or outbound agent node.
  2. Select Configure.
  3. Scroll down to the Voice dropdown menu.
  4. Choose your desired voice from the list.
Prompt Outbound Example

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Selecting the Right Voice

We offer a wide selection of voices across various languages, tones, speech patterns, and cadences.
  • For English, the best voices are those with no tags (such as Multi, Flash, etc..), for example:
English example
  • For non-English languages, we recommend voices tagged with Turbo Multi for the best performance. Enabling Multilingual Capabilities alongside this will ensure the best possible multilingual experience.
turbo multi example

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Multilingual Capabilities

The platform supports multi-lingual conversations through live-switching, which enables the bot to automatically detect the caller’s spoken language and respond in the same language. This allows for seamless interactions without requiring users to select a language upfront. Live-switching can be enabled by navigating to your Agent Node → Advanced → Multi-lingual —> Toggle Yes Then, in your prompt node add something like:
Prompt: If the caller speaks in Spanish, respond only in Spanish.
Currently supported languages:
  • English
  • Spanish
  • French
  • German
  • Hindi
  • Russian
  • Portuguese
  • Japanese
  • Italian
  • Dutch

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Test & Preview Voices

To try out different voices before assigning them:
  1. Navigate to Organization Settings (top-left corner of the dashboard).
Prompt Outbound Example
  1. Click on Voices in the sidebar.
  2. Use the Voice Playground to preview voices with various example excerpts.
Prompt Outbound Example
Note: Voices may sound slightly different in the playground compared to production. For the most accurate preview, test voices directly within a live workflow.

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