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

# Get synthesizer providers

> Retrieve available TTS (text-to-speech) synthesizer providers

This endpoint returns a list of available synthesizer providers that can be used when creating or updating assistants. Use the returned `id` as `synthesizer_provider_id` when configuring an assistant.

### Query Parameters

**language\_id** `integer`

Filter providers by language support. Only returns providers that support the given language. Use the [Get Languages](https://docs.receptonic.com/api-reference/assistants/get-languages.md) endpoint to get available language IDs.

### Response fields

**data** `array`

**properties**

**id** `integer`

The unique identifier of the provider. Use this as `synthesizer_provider_id` when creating or updating assistants.

**name** `string`

The display name of the provider (e.g., "ElevenLabs", "Azure", "Cartesia")

**code** `string`

The internal code of the provider

```json 200 Response theme={null}
[
  {
    "id": 1,
    "name": "ElevenLabs",
    "code": "elevenlabs"
  },
  {
    "id": 2,
    "name": "Azure",
    "code": "azure"
  },
  {
    "id": 3,
    "name": "Cartesia",
    "code": "cartesia"
  }
]
```

```json 200 Filtered by language theme={null}
[
  {
    "id": 1,
    "name": "ElevenLabs",
    "code": "elevenlabs"
  },
  {
    "id": 3,
    "name": "Cartesia",
    "code": "cartesia"
  }
]
```

### Notes

* If no `language_id` filter is provided, all providers are returned
* Not all providers support all languages — use the `language_id` filter to get compatible providers
* Synthesizer providers are only relevant for `pipeline` and `dualplex` modes (multimodal mode handles TTS internally)
* If you don't set `synthesizer_provider_id` when creating an assistant, the language's default provider is used


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