> For a complete documentation index, fetch https://docs.voximplant.ai/llms.txt

# Speech Guides

## Docs

- [OpenAI TTS voices](https://docs.voximplant.ai/feature-guides/speech/openai-tts.md): Use OpenAI text-to-speech voices with Voximplant.
- [Measuring TTS latency](https://docs.voximplant.ai/feature-guides/speech/tts-metrics.md): Read time to first byte from an Inworld realtime TTS player.