HeyGen API

Overview

HeyGen provides REST APIs to create talking avatar videos, clone voices, translate videos with lip-sync, and stream live avatar sessions. Use it to automate video content production at scale — from personalized sales outreach to multilingual marketing campaigns.

Setup

pip install requests python-dotenv
export HEYGEN_API_KEY="your_api_key_here"

Base URL: https://api.heygen.com

Core Concepts

• Avatar: A digital human that delivers the video. Choose from HeyGen's library or create a custom avatar.
• Voice: TTS or cloned voice that speaks the script.