> ## Documentation Index
> Fetch the complete documentation index at: https://docs.thoughtly.com/llms.txt
> Use this file to discover all available pages before exploring further.

# TTS (text-to-speech)

> TTS (text-to-speech) technology converts written text into spoken words and is what gives Thoughtly voice agents their natural-sounding voice over the phone.

**TTS** stands for Text-to-Speech, a technology that converts written text into spoken words. TTS is used in a variety of applications including voice agents, audiobooks, and accessibility tools. Common TTS providers include [ElevenLabs](https://elevenlabs.io), [Cartesia](https://cartesia.ai), and [Google](https://cloud.google.com/text-to-speech).