Generate, translate, and scale with one API

Our Video Agent, text-to-video, translation, and avatar APIs are production-ready and built to scale, starting at $5.

const options = {
  method: 'POST',
  headers: {'x-api-key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    prompt: '<string>',
    avatar_id: '<string>',
    voice_id: '<string>'
  })
};

fetch('https://api.heygen.com/v3/video-agents', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

Model Gallery

Video Agent

Go from idea to finished video in a single prompt. No scripting, no avatar selection — just describe what you want and let AI handle the rest.

Avatar IV

Digital Twin

A Digital Twin is a lifelike avatar trained from real video footage of a person. Once created, you can make it speak any script in any supported voice — no camera or studio required.

Avatar IV

Photo Avatar

A Photo Avatar is created from a single still image of a person. HeyGen animates the face, syncs lip movements to your script, and produces a realistic talking-head video — all from one photo.

Precision

Video Translation

Translate any video into 175+ languages with context-aware, highly natural lip-sync and accurate gender detection. Your content speaks every language — in your voice — just the way you intended.

Speed

Video Translation

Translate any video into 175+ languages quickly with fast, scalable dubbing — your content speaks every language.

Precision

Overdub

Dub or replace audio on a video using a provided audio file. HeyGen re-syncs the speaker’s lip movements to match the new audio.

Speed

Overdub

Dub or replace audio on a video using a provided audio file. HeyGen re-syncs the speaker’s lip movements to match the new audio.

Starfish

Voices

Generate speech audio from text using HeyGen’s TTS engine.

Trusted by over 1,000,000 developers and leading companies.

HeyGen for Agents

The HeyGen CLI is agent-first by design, wrapping the full v3 API so developers and AI agents can create, poll, and download avatar videos straight from the terminal. Every command returns structured JSON, making it a natural fit for scripts, CI pipelines, and autonomous agent workflows.

CLI Doc

Pricing

Start from $5 and only pay for what you generate

Models	Cost	Use Case
Video Agent	$0.0333 / sec	One prompt in, polished video out. Avatar, script, and editing handled!
Photo Avatar - Avatar IV	$0.1 / sec	Turn a single photo into videos — demos, intros, and social media content.
Digital Twin - Avatar IV	$0.1 / sec	Clone your face and voice from a video — scale yourself instantly
Video Translation	$0.05 / sec	Lip-synced dubbing in 40+ languages, no re-shoots or voice actors needed.
Overdub	$0.05 / sec	Replace your video's audio and the lips re-sync automatically.
Proofread	$0.0083 / sec	Edit first, then translate with lip-synced dubbing into 40+ languages.
Voices - Starfish	$0.000333 / sec	Natural AI voiceovers for explainers, IVR, and training at a fraction of a cent.

Start building with HeyGen

Explore the building blocks behind HeyGen's video APIs and find everything you need to get your next project off the ground.

The Basics

Developer guide

Everything you need to go from zero to your first video. Step-by-step walkthroughs for authentication, video creation, avatars, and integrations.

API reference

Complete endpoint documentation for every HeyGen API. Request formats, response schemas, and live "Try It" consoles to test in real time.

Other ways to integrate

CLI

Build and ship videos without leaving your terminal.

MCP

Connect HeyGen to any AI agent with a single endpoint. No API keys or setup. Just OAuth and your agent starts creating videos instantly.

See what's possible

CookBook

Production-ready recipes for common workflows. Copy, customize, and deploy, from personalized outreach to batch translation pipelines.

Changelog

This page lists all API updates, improvements, and fixes—your go-to reference for tracking changes and version history.

50M+ videos generated

HeyGen's global video infrastructure is built to handle production workloads of any size, giving developers and enterprise teams the reliability and scale they need to keep up with demand and grow without limits.

Agentic ready

HeyGen is designed to work alongside your AI agents. Our production-ready APIs integrate directly into agentic workflows, giving your systems the ability to generate and translate video automatically and at scale.

SOC 2 Type II and GDPR

Your data security is our top priority. HeyGen is independently audited and certified for SOC 2 Type II and GDPR compliance, ensuring your information stays protected at the highest possible standards.

99.9% API uptime

HeyGen is built for dependable performance with a 99.9% API uptime, ensuring your video infrastructure stays available and your automated video workflows run without interruption.

Have questions? We have answers

What are the different ways to integrate with HeyGen?

HeyGen offers three integration paths: MCP for connecting to AI assistants like Claude without managing APIs, Skills for extending AI coding agents like Claude Code and Cursor, and Direct API for full programmatic control over video generation.

How does authentication work for each integration path?

MCP uses OAuth — users authorize via a consent screen with no API keys needed. Skills and Direct API both use an API key passed via the X-Api-Key header, generated from Settings → API in your HeyGen dashboard.

Are MCP credits and API balance the same?

No. MCP usage is deducted from your web plan's premium credit balance, while Skills and Direct API usage is deducted from your API dashboard balance. The two billing pools are independent.

What's the minimum amount to get started with Pay-As-You-Go?

You can start with as little as $5. Just top up your API wallet and pay only for what you use — no monthly commitment required.

What does the Enterprise plan offer beyond Pay-As-You-Go?

Enterprise includes everything in Pay-As-You-Go plus customized scalability, dedicated developer support, Digital Twin Creation API, Proofread API, and discounted rates.