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Overview

Cartesia provides high-quality text-to-speech synthesis with two service implementations: CartesiaTTSService (WebSocket-based) for real-time streaming with word timestamps, and CartesiaHttpTTSService (HTTP-based) for simpler batch synthesis. CartesiaTTSService is recommended for interactive applications requiring low latency and interruption handling.

Cartesia TTS API Reference

Pipecat’s API methods for Cartesia TTS integration

Example Implementation

Complete example with interruption handling

Cartesia Documentation

Official Cartesia API documentation and features

Voice Library

Browse and test available voices

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Installation

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

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Prerequisites

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Cartesia Account Setup

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

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Required Environment Variables

  • CARTESIA_API_KEY: Your Cartesia API key for authentication