​
Usage

We follow the OpenAI signature where you can send the input text and the voice option as a part of the API request. All the output formats mp3, opus, aac, flac, and pcm are supported. Portkey also supports real time audio streaming for TTS models. Here’s an example: 
import fs from "fs";
import path from "path";
import OpenAI from "openai";
import { PORTKEY_GATEWAY_URL } from 'portkey-ai'

const openai = new OpenAI({
  apiKey: "PORTKEY_API_KEY",
  baseURL: PORTKEY_GATEWAY_URL
});

const speechFile = path.resolve("./speech.mp3");

async function main() {
  const mp3 = await openai.audio.speech.create({
    model: "@openai/tts-1",
    voice: "alloy",
    input: "Today is a wonderful day to build something people love!",
  });
  const buffer = Buffer.from(await mp3.arrayBuffer());
  await fs.promises.writeFile(speechFile, buffer);
}

main();
On completion, the request will get logged in the logs UI and show the cost and latency incurred.