HeyGen

API

API for AI avatar videos, voice clones and video translation

Price: Pay per use
Access: API key (X-Api-Key header)

Docs
MCP
OpenAPI
llms.txt

About

Video API for talking-avatar videos: a Video Agent turns a prompt into a finished video, or you pick an avatar, voice and script yourself. It also clones voices and translates videos with lip-sync. API billing is separate from app plans.

What you can do with it

Turn a prompt into a finished presenter video with the Video Agent
Render an avatar reading your script in a stock or cloned voice
Translate a video into other languages with lip-sync

Get started

Create an API key in the HeyGen API dashboard
Poll the session for a video_id, then the video for its URL

Example

curl -X POST "https://api.heygen.com/v3/video-agents" \
  -H "X-Api-Key: $HEYGEN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"prompt": "A presenter explaining our product launch in 30 seconds"}'

Details

Hosting: Hosted service
Available in: Worldwide
MCP server: Remote