Text to Speech

API Overview

To simplify the integration of different text-to-speech-creation models (tts), Infron AI provides a unified image API.

API Specification

Generates audio from the input text.

curl https://audio.onerouter.pro/v1/audio/speech \
    -H "Content-Type: application/json" \
    -H "Authorization: <API_KEY>" \
    -d '{
    "model": "gpt-4o-mini-tts",
    "input": "A cute baby sea otter",
    "voice": "alloy"
  }' \
  --output speech.mp3

import os
import json
import requests

API_URL = "https://audio.onerouter.pro/v1/audio/speech"
API_KEY = os.getenv("ONEROUTER_API_KEY")

if not API_KEY:
    raise RuntimeError("Please set the ONEROUTER_API_KEY")

payload = {
    "model": "gpt-4o-mini-tts",
    "input": "A cute baby sea otter.",
    "voice": "alloy",
    "response_format": "mp3"
}

headers = {
    "Authorization": API_KEY,
    "Content-Type": "application/json"
}

response = requests.post(API_URL, headers=headers, data=json.dumps(payload))
response.raise_for_status()

out_path = os.path.join(os.path.dirname(__file__), "tts-output.mp3")
with open(out_path, "wb") as f:
    f.write(response.content)

print(f"Saved to: {out_path}")

<API_KEY> is your API Key generated in API page.
model is the model name, such as gpt-4o-mini-tts, available model list can be access in Model page.
The voice to use when generating the audio. Supported voices are alloy, ash, ballad, coral, echo, fable, onyx, nova, sage, shimmer, and verse.