# OpenAI TTS-1 HD: AI model fact sheet

- **Provider:** openai
- **Released:** 2024-04-09
- **Capabilities:** text-to-speech, audio-generation

OpenAI's high-definition text-to-speech model with six built-in voices. Clear, natural speech optimized for quality over latency.

Source: real side-by-side outputs, pricing and specs at https://rival.tips/models/openai-tts-1-hd