TTS 1.5 Max

This documentation is valid for the following list of our models:

• inworld/tts-1-5-max

Try in Playground

A text-to-speech model focused on maximum voice stability and expressiveness, suitable for high-quality production and narrative use cases.

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

Body

application/json

modelstring · 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: wavPossible values:

streamboolean · enumOptionalDefault: falsePossible values:

Responses

200Success

application/jsonaudio/wav

audiostring · uriRequired

post/v1/tts

cURLJavaScriptPython

curl -L \
  --request POST \
  --url 'https://api.aimlapi.com/v1/tts' \
  --header 'Authorization: Bearer <YOUR_AIMLAPI_KEY>' \
  --header 'Content-Type: application/json' \
  --data '{
      "model": "inworld/tts-1-5-max",
      "text": "Cities of the future promise to radically transform how people live, work, and move. Instead of sprawling layouts, we will 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."
    }'

200Success

{
  "audio": "https://example.com",
  "meta": {
    "usage": {
      "credits_used": 120000,
      "usd_spent": 0.06
    }
  }
}

Code Example

Python

import requests
import json  # for getting a structured output with indentation

# 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-1-5-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(json.dumps(result, indent=2, ensure_ascii=False))

JaveScript

Response

{
  "audio": {
    "url": "https://cdn.aimlapi.com/generations/hippopotamus/1770761823703-16ec44cb-bd8a-4e1c-916e-e198f71e93e0.wav"
  },
  "meta": {
    "usage": {
      "credits_used": 2522
    }
  }
}

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