inworld/tts-1-max

This documentation is valid for the following model:

• inworld/tts-1-max

This model is designed for realtime text-to-speech generation. A larger, more expressive variant of inworld/tts-1.

Setup your API Key

If you don’t have an API key for the AI/ML API yet, feel free to use our Quickstart guide.

API Schema

post

Authorizations

access-token

AuthorizationstringRequired

Bearer key

Body

application/json

modelundefined · enumRequiredPossible values:

textstring · min: 1 · max: 500000Required

The text content to be converted to speech.

voicestring · enumOptional

Name of the voice to be used.

Default: AlexPossible values:

formatstring · enumOptional

Audio output format. WAV delivers uncompressed audio in a widely supported container format, while MP3 provides good compression and compatibility.

Default: mp3Possible values:

Responses

201Success

application/json

post

/v1/tts

JavaScriptPythoncURLHTTP

async function main() {
  const response = await fetch('https://api.aimlapi.com/v1/tts', {
    method: 'POST',
    headers: {
      'Authorization': 'Bearer <YOUR_API_KEY>',
      'Content-Type': 'application/json',
    },
    body: JSON.stringify({
      "model": "inworld/tts-1-max",
      "text": "Cities of the future promise to radically transform how people live, work, and move. Instead of sprawling layouts, we’ll see vertical structures that integrate residential, work, and public spaces into single, self-sustaining ecosystems. Architecture will adapt to climate conditions, and buildings will be energy-efficient—generating power through solar panels, wind turbines, and even foot traffic."
    }),
  });

  const data = await response.json();
  console.log(JSON.stringify(data, null, 2));
}

main();

201Success

{
  "metadata": {
    "transaction_key": "text",
    "request_id": "text",
    "sha256": "text",
    "created": "2025-12-19T00:16:34.881Z",
    "duration": 1,
    "channels": 1,
    "models": [
      "text"
    ],
    "model_info": {
      "ANY_ADDITIONAL_PROPERTY": {
        "name": "text",
        "version": "text",
        "arch": "text"
      }
    }
  }
}

Code Example

Python

import requests

# Insert your AI/ML API key instead of <YOUR_AIMLAPI_KEY>:
api_key = "<YOUR_AIMLAPI_KEY>" 
base_url = "https://api.aimlapi.com/v1"

headers = {
    "Authorization": f"Bearer {api_key}",
    "Content-Type": "application/json",
}

data = {
    "model": "inworld/tts-1-max",
    "text": "It is a fast and powerful language model. Use it to convert text to natural sounding spoken text.",
    "voice": "Timothy",
}

response = requests.post(f"{base_url}/tts", headers=headers, json=data)
response.raise_for_status()

result = response.json()

print("Audio URL:", result["audio"]["url"])

JaveScript

Response

Audio URL: https://cdn.aimlapi.com/generations/tts/inworld-tts-fc718c97-12b3-42dc-919c-518c48ace59a.mp3/1764327592881-89e9ea63-935c-42d0-b769-8290ad769b7c.mp3

Listen to the audio sample we generated (~ 3.2 s):