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GET
https://app.autocalls.ai/api/
/
user
/
assistants
/
synthesizer-providers
Get synthesizer providers
curl --request GET \
  --url https://app.autocalls.ai/api/user/assistants/synthesizer-providers \
  --header 'Authorization: Bearer <token>'
[
  {
    "id": 1,
    "name": "ElevenLabs",
    "code": "elevenlabs"
  },
  {
    "id": 2,
    "name": "Azure",
    "code": "azure"
  },
  {
    "id": 3,
    "name": "Cartesia",
    "code": "cartesia"
  }
]
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 endpoint to get available language IDs.

​
Response fields

​
data
array
[
  {
    "id": 1,
    "name": "ElevenLabs",
    "code": "elevenlabs"
  },
  {
    "id": 2,
    "name": "Azure",
    "code": "azure"
  },
  {
    "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