> ## 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.

# NVIDIA TTS

> Configure NVIDIA text-to-speech via the NVCF API in assistant-api.

NVIDIA provides text-to-speech through the NVIDIA Cloud Functions (NVCF) API, offering enterprise-grade neural voice synthesis. Voices are served from NVIDIA's inference infrastructure with high throughput.

**Provider identifier:** `nvidia`

***

## Vault Credentials

| Key           | Description                                                |
| ------------- | ---------------------------------------------------------- |
| `key`         | NVIDIA API key from [nvidia.com](https://build.nvidia.com) |
| `function_id` | NVCF Function ID for the TTS model endpoint                |

***

## Setup

<Steps>
  <Step title="Get NVIDIA API credentials">
    Sign in at [build.nvidia.com](https://build.nvidia.com) → **API Keys** to generate your API key. Navigate to the TTS model card to find the corresponding NVCF Function ID.
  </Step>

  <Step title="Add to Rapida vault">
    In the Rapida dashboard → **Credentials → Create Credential**, select provider **NVIDIA**, enter `key` = your API key and `function_id` = your NVCF Function ID.
  </Step>

  <Step title="Configure the assistant">
    In the assistant settings → **TTS Provider**, select **NVIDIA**.

    | Option     | Example               | Description                                                               |
    | ---------- | --------------------- | ------------------------------------------------------------------------- |
    | `voice_id` | `English-US.Female-1` | NVIDIA voice identifier (e.g. `English-US.Female-1`, `English-US.Male-1`) |
    | `language` | `en-US`               | Language code: `en-US`, `en-GB`, `es-ES`, `fr-FR`, `de-DE`, and more      |

    Browse available voices and models in the [NVIDIA NIM catalog](https://build.nvidia.com/explore/speech).
  </Step>
</Steps>

***

<CardGroup cols={2}>
  <Card title="NVIDIA STT" icon="waveform" href="/opensource/services/assistant-api/stt/nvidia">
    NVIDIA speech recognition via NVCF
  </Card>

  <Card title="TTS Overview" icon="volume" href="/opensource/services/assistant-api/tts/overview">
    All TTS providers
  </Card>
</CardGroup>