> ## Documentation Index
> Fetch the complete documentation index at: https://doc.rapida.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Cartesia Text-to-Speech

> Cartesia delivers advanced text-to-speech capabilities with ultra-realistic voice synthesis.

## Getting Started

To integrate Cartesia Text-to-Speech with your Rapida application, follow these steps:

## Supported Models

### Text-to-Speech Models

| Model Name    | Description                 | Use Case                           |
| ------------- | --------------------------- | ---------------------------------- |
| Sonic English | High-quality English voices | Professional TTS applications      |
| Bark Model    | Expressive speech synthesis | Creative and dynamic voice outputs |
| Tortoise TTS  | Ultra-realistic voices      | High-fidelity voice synthesis      |

### Supported Languages

Cartesia supports 20+ languages including:

* English (multiple accents)
* Spanish, French, German, Italian
* Portuguese, Russian, Polish, Dutch
* Japanese, Mandarin, Korean
* Hindi and other Indian languages
* And more

### Voice Features

* **Multiple Voice Personalities**: Choose from various voice options
* **Emotion Expression**: Control emotional tone and expressiveness
* **Pronunciation Control**: Define how specific words are pronounced
* **Speed Control**: Adjust speaking rate from slow to fast
* **Streaming Support**: Stream audio in real-time

## Prerequisites

* Have a Cartesia account (sign up at [https://cartesia.ai](https://cartesia.ai))
* Navigate to your API dashboard
* Generate an API key
* Copy the API key (make sure to save it securely)

# Setting Up Provider Credentials

<Steps>
  <Step title="Access the Integrations Page">
    <img src="https://mintcdn.com/rapidaai/iFtJHOhZE0HHFT_Q/images/integration/providers/providers-and-models.png?fit=max&auto=format&n=iFtJHOhZE0HHFT_Q&q=85&s=1aa112ebaf44541a92bcac925df62cf8" alt="Integrations Page" width="3600" height="2024" data-path="images/integration/providers/providers-and-models.png" />

    Navigate to the "Integration > Models" page to access TTS providers.
  </Step>

  <Step title="Select Cartesia">
    On the Integrations page, find the Cartesia provider card.

    Click the "Setup Credential" button for Cartesia.
  </Step>

  <Step title="Create Provider Credential">
    A modal window will appear titled "Create provider credential". Follow these steps:

    1. Select "Cartesia" from the dropdown (if not already selected)
    2. Enter a Key Name: Assign a unique name to this provider key for easy identification
    3. Enter the API Key: Input your Cartesia API key
    4. Click "Configure" to save the credential
  </Step>

  <Step title="Verify Credential Setup">
    After setting up the credential, you can verify it's been added:

    1. The Cartesia provider card should now show "Connected"
    2. If you click on the provider, you'll see a "View provider credential" modal
    3. This modal displays the credential name, when it was last updated, and options to delete or close
  </Step>
</Steps>

Your Cartesia Text-to-Speech provider credential is now set up.

## Integration Features

* **Ultra-Realistic Voices**: Advanced voice synthesis quality
* **20+ Languages**: Comprehensive language coverage
* **Multiple Voice Models**: Choose different TTS models
* **Expression Control**: Fine-tune emotional expression
* **Real-time Processing**: Low-latency audio generation
* **Streaming TTS**: Stream audio as it's being generated
* **Professional Quality**: Enterprise-grade voice synthesis

For more information, visit the [Cartesia documentation](https://www.cartesia.ai/).