YepAPI
AI Models

HeyGen Voice Turbo

The lower-latency version of HeyGen Voice — same 10 voices, raw 44.1 kHz PCM output.

POST/v1/media/queue
$0.0084/1K chars

Overview

HeyGen Voice Turbo is a lower-latency version of HeyGen Voice, HeyGen's text-to-speech model. It has the same 10 built-in voices and returns raw PCM at 44.1 kHz, at about a quarter of HeyGen Voice's per-character price.

PropertyValue
Model IDheygen/heygen-voice-1-turbo
Aliasheygen-voice-turbo
Upstream Modelheygen/heygen-voice-1-turbo
CategoryText to Speech
Outputpcm only
Pricing$0.0084 per 1,000 characters

Usage

All media models use the async job queue. Submit a job, then poll for the result.

Step 1: Submit Job

const res = await fetch('https://api.yepapi.com/v1/media/queue', {
  method: 'POST',
  headers: {
    'x-api-key': 'YOUR_API_KEY',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    model: 'heygen/heygen-voice-1-turbo',
    prompt: 'Your text to speak goes here.',
    options: { voice: 'nadine' },
  }),
});
const { data } = await res.json();
// data.jobId — use this to poll for results
curl -X POST https://api.yepapi.com/v1/media/queue \
  -H "x-api-key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "heygen/heygen-voice-1-turbo", "prompt": "Your text to speak goes here."}'

Step 2: Poll for Result

const status = await fetch(`https://api.yepapi.com/v1/media/status/${data.jobId}`, {
  headers: { 'x-api-key': 'YOUR_API_KEY' },
});
const { data: job } = await status.json();
// job.status — "pending" | "processing" | "completed" | "failed"
// job.result.audio — { mimeType, base64 } when completed
curl https://api.yepapi.com/v1/media/status/JOB_ID \
  -H "x-api-key: YOUR_API_KEY"

Write the audio to a file:

import { writeFileSync } from 'node:fs';

writeFileSync('speech.pcm', Buffer.from(job.result.audio.base64, 'base64'));

Request Body

ParameterTypeRequiredDescriptionDefault
modelstringYesheygen/heygen-voice-1-turbo—
promptstringYesThe text to speak (max 50,000 bytes)—
options.voicestringNoVoice identifiernadine
options.outputFormatstringNopcm onlypcm
options.speednumberNoPlayback speed multiplier. Honoured only by models that support it1.0

Voices

nadine is used when options.voice is omitted. 10 voices available:

  • nadine
  • tabitha
  • bram
  • gareth
  • noelle
  • meredith
  • sabrina
  • lucian
  • weston
  • vincent

Features

  • Lower latency than HeyGen Voice
  • Same 10 built-in voices
  • 44.1 kHz PCM output
  • Returns raw PCM only (see the note below)
Warning

This model returns raw PCM only — requesting outputFormat: "mp3" is rejected at submit time. job.result.audio.mimeType carries the sample rate, e.g. audio/pcm;rate=44100;channels=1, and the audio is headerless: wrap it in a WAV container or feed it to an audio pipeline directly.

Billing

Speech is billed on the length of the input text, in UTF-8 bytes — for English text one byte is one character. The cost is known before synthesis starts, so the balance check at submit time quotes the exact final charge. Jobs have a $0.01 minimum.

Under the Hood

Powered by OpenRouter's unified speech API.

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