Click and copy this into Claude or Codex

The video you imagine, delivered into your system

We orchestrates avatars, voices, images, editing, music, and assets into deterministic, repeatable renders, and delivers production-ready video into your own stack. From one video to batches of thousands on HeyGen Cloud

Get API Key

View Docs

const res = await fetch("https://api.heygen.com/v3/videos", {
  method: "POST",
  headers: {
    "X-Api-Key": "YOUR_API_KEY",
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
    type: "avatar",
    avatar_id: "YOUR_AVATAR_ID",
    engine: { type: "avatar_v" },
    script: "Hello, this is a sample video.",
    voice_id: "YOUR_VOICE_ID"
  })
});
console.log(await res.json());

Model Gallery

Abstract image of overlapping, rounded blue and purple shapes with a grainy texture against a black background.

Avatar V

Digital Twin

Character consistency is what separates a useful avatar from a gimmick. Avatar V delivers it across every angle, every expression, and every video you create.

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.

Grainy abstract image with overlapping rounded teal and pink shapes on a black background.

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.

Abstract, grainy shapes in a blue and green gradient against a black background.

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.

Abstract black background with glowing teal green diagonal bands.

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.

Dark green to black gradient background with rounded corners.

Starfish

Voices

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

Precision

Lipsync

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

Video Translation

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

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

HeyGen for Agents

To let Claude or Codex use the HeyGen API, just drop the HeyGen CLI command into your Claude or Codex setup and ask it to generate videos or translate something. Simple, but effective. The CLI uses your API key and consumes your API balance. If you want to use your web subscription instead, you'll need to connect MCP to your agent.

CLI Doc

Pricing

Start from $5 and only pay for what you generate

Models	Costs start from	Use Case
Video Agent	$0.0333 / sec	One prompt in, polished video out. Avatar, script, and editing handled!
Digital Twin - Avatar V	$0.0667 / sec	Clone your face and voice from a video — scale yourself instantly
Video Translation - Precision	$0.0667 / sec	Lip-synced dubbing in 40+ languages, no re-shoots or voice actors needed.
Video Translation - Speed	$0.0333 / sec	Lip-synced dubbing in 40+ languages, no re-shoots or voice actors needed.
Lipsync - Precision	$0.0667 / sec	Replace your video's audio and the lips re-sync automatically.
Voices - Starfish	$0.000667 / sec	Natural AI voiceovers for explainers, IVR, and training at a fraction of a cent.
Lipsync - Speed	$0.0333 / sec	Replace your video's audio and the lips re-sync automatically.

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.