Voice preview and test call

With the voice preview and a test call you check the language and voice before the production start; test and preview calls are not billed.

Last reviewed: 2026-07-22

Voice preview and test call

Before a campaign starts in production, you can check the selected voice. The voice preview and the test call are available for this. You hear in advance how the language and voice sound in the conversation and can make adjustments while the campaign settings are still open.

Preview and test call

  • Voice preview: you check the selected voice without starting a production campaign.
  • Test call: you test the campaign with a non-production call to check the language, voice and conversation flow together.

How a test works in the campaign context is described in testing a campaign before launch.

Billing of test and preview calls

Hinweis: Calls explicitly classified as preview or test are not billed. Only the connected talk time of production calls is billed, per second.

For more, see which calls are not billed? and preview calls and test calls.

Using the preview well

  1. In the campaign settings, select the conversation language and the voice.
  2. Use the preview or a test call to check the result.
  3. Adjust the voice or language if needed.
  4. Start the campaign only when the result matches your expectations.

When a preview is worth it

A preview or a test call is always worthwhile when you use a voice for the first time, change the conversation language or have set up a new custom voice. This lets you see before the production start whether the language and voice give the impression you want, without incurring talk-time costs.

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