> ## 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.

# Voice

> Overview of Telnyx Voice — standalone components for building voice AI applications, including STT, TTS, programmable voice, WebRTC, and SIP trunking.

<CardGroup cols={3}>
  <Card title="Speech-to-Text" icon="microphone" href="/docs/voice/stt/overview">
    Real-time and file-based transcription with four engine options: Telnyx, Google, Deepgram, and Azure.
  </Card>

  <Card title="Text-to-Speech" icon="waveform" href="/docs/voice/tts/overview">
    Convert text to natural-sounding audio via WebSocket streaming. Multiple voice providers and languages.
  </Card>

  <Card title="Voice Clone" icon="clone" href="/docs/voice/voice-design-lab/clone-voice">
    Clone voices from audio samples or design custom AI voices from natural language prompts.
  </Card>
</CardGroup>