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Documentation Index

Fetch the complete documentation index at: https://developers.telnyx.com/llms.txt

Use this file to discover all available pages before exploring further.

The Voice Design Lab lets you create custom voices for text-to-speech. No recording studio, no training datasets, no waiting.

Design a Voice

Start from a description. Write what you want in plain text — age, tone, accent, energy — and the AI generates it.

Clone from Audio

Start from a recording. Upload an audio clip (or record one in the browser) and the AI captures that voice identity.