> ## 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.

# STT (speech-to-text)

> STT (speech-to-text) technology converts spoken words into written text, and is what Thoughtly voice agents use to transcribe caller speech for the LLM.

**STT** stands for Speech-to-Text, a technology that converts spoken words into written text. STT is used in a variety of applications including voice agents, transcription, and accessibility tools. Common STT providers include [Deepgram](https://deepgram.com), [Gladia](https://gladia.io), [AssemblyAI](https://assemblyai.com), and [Google](https://cloud.google.com/speech-to-text).