​
Overview

Async provides high-quality text-to-speech synthesis with two service implementations: AsyncAITTSService (WebSocket-based) for real-time streaming with interruption support, and AsyncAIHttpTTSService (HTTP-based) for simpler synthesis. AsyncAITTSService is recommended for interactive applications requiring low latency.

AsyncAI TTS API Reference

Pipecat’s API methods for AsyncAI TTS integration

Example Implementation

Complete example with WebSocket streaming

Async Documentation

Official Async API documentation

Voice Models

Explore available voice models and features

​
Installation

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

​
Prerequisites

​
Async Account Setup

Before using Async TTS services, you need:
  1. Async Account: Sign up at Async
  2. API Key: Generate an API key from your account dashboard
  3. Voice Selection: Choose from available voice models

​
Required Environment Variables

  • ASYNCAI_API_KEY: Your Async API key for authentication