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Overview

OpenAITTSService provides high-quality text-to-speech synthesis using OpenAI’s TTS API with multiple voice models including traditional TTS models and advanced GPT-based models. The service outputs 24kHz PCM audio with streaming capabilities for real-time applications.

OpenAI TTS API Reference

Pipecat’s API methods for OpenAI TTS integration

Example Implementation

Complete example with voice customization

OpenAI Documentation

Official OpenAI TTS API documentation

Voice Samples

Listen to available voice options

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Installation

To use OpenAI services, install the required dependencies: 
pip install "pipecat-ai[openai]"

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Prerequisites

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OpenAI Account Setup

Before using OpenAI TTS services, you need:
  1. OpenAI Account: Sign up at OpenAI Platform
  2. API Key: Generate an API key from your API keys page
  3. Voice Selection: Choose from available voice options (alloy, echo, fable, onyx, nova, shimmer, etc.)

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Required Environment Variables

  • OPENAI_API_KEY: Your OpenAI API key for authentication