works, but only for short strings. getting 400 on anything else.

audio_from_elevenlabs.js

// docs:
// https://docs.elevenlabs.io/api-reference/quick-start/introduction
// https://api.elevenlabs.io/docs#/text-to-speech/Text_to_speech_v1_text_to_speech__voice_id__post

const axios = require('axios');
const fs = require('fs');
const path = require('path');
require('dotenv').config();


const API_KEY = process.env.ELEVENLABS_API_KEY;
if (API_KEY == null) return console.error('Please set env variable ELEVENLABS_API_KEY');
const VOICE_ID = 'ErXwobaYiN019PkySvjV'; // "Antoni"
const outputAudioFile = './audio.mp3');



// DO IT!
makeAudioFileFromText('5 Cool goats drink aliens. 7 Drunk apes eat batteries. 10 Fat cats go dancing.', outputAudioFile); // works!







// -------------------------------------------------------------- lib
async function makeAudioFileFromText(text, filename) {
  try {
    console.log(`Success, Audio saved as: ${filename}`);
  } catch (error) {
    console.error(`An error occurred while converting text to speech: ${error}`);
  }

  try {
    var voice = "https://api.elevenlabs.io/v1/text-to-speech/" + VOICE_ID + "/stream";

    fs.open(filename, 'w', (error, fd) => {
      if (error) {
        console.error('An error occurred while creating the file:', error);
        return;
      }
    });

    const response = await axios({
      method: 'post',
      url: voice,
      data: { text },
      headers: {
        'Accept': 'audio/mpeg',
        'xi-api-key': API_KEY,
        'Content-Type': 'application/json',
      },
      responseType: 'stream'
    });
    response.data.pipe(fs.createWriteStream(filename));

  } catch (error) {
    console.error(error);
  }

}