> ## 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.

# Speechmatics TTS

> Configure Speechmatics text-to-speech with HTTP streaming in assistant-api.

Speechmatics provides speech synthesis via HTTP streaming TTS, backed by the same platform known for its broad multilingual speech recognition. It supports a range of voices and languages for conversational assistant deployments.

**Provider identifier:** `speechmatics`

***

## Vault Credential

| Key   | Description                                                                   |
| ----- | ----------------------------------------------------------------------------- |
| `key` | Speechmatics API key from [speechmatics.com](https://portal.speechmatics.com) |

***

## Setup

<Steps>
  <Step title="Get a Speechmatics API key">
    Sign in at [portal.speechmatics.com](https://portal.speechmatics.com) → **API Keys → Generate API Key**.
  </Step>

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

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

    | Option     | Example          | Description                                                                         |
    | ---------- | ---------------- | ----------------------------------------------------------------------------------- |
    | `voice_id` | `en-US-Neural-F` | Speechmatics voice identifier                                                       |
    | `language` | `en`             | Language code: `en`, `es`, `fr`, `de`, `it`, `pt`, `nl`, `pl`, `ja`, `zh`, and more |

    See the full voice and language list in the [Speechmatics TTS documentation](https://docs.speechmatics.com).
  </Step>
</Steps>

***

<CardGroup cols={2}>
  <Card title="Speechmatics STT" icon="waveform" href="/opensource/services/assistant-api/stt/speechmatics">
    Speechmatics real-time speech recognition
  </Card>

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