The Stack · Voice, speech & video API

HeyGen

Programmatic AI avatar video generation and video translation/dubbing with lip-sync, via a REST API.

API keyUsage-based🟡 agent: manual only

Get API key → human signup required Docs Website

CategoryVoice, speech & video

TypeAPI service

Authapi-key

PricingUsage-based

Agent signup🟡 manual only

SDKsREST, Python

Pricing: PAYG from $5; ~$1/min for 720p/1080p standard, up to ~$4/min for premium avatar engines. No free API credits since Feb 2026.

🟡 Agents: manual only

Manual — signup needs a human (card, verification, or sales).

API key is generated in Settings → API, but usage requires purchased credits (credit card) — no free API tier, so an agent needs a human/CC to run it. Also offers MCP and Skills integration paths.

HeyGen — Programmatic AI avatar video generation and video translation/dubbing with lip-sync, via a REST API.
Website: https://www.heygen.com
Docs: https://docs.heygen.com
Get a key: https://app.heygen.com
Agent signup: manual only — API key is generated in Settings → API, but usage requires purchased credits (credit card) — no free API tier, so an agent needs a human/CC to run it. Also offers MCP and Skills integration paths.
Auth: api-key
Pricing: usage-based — PAYG from $5; ~$1/min for 720p/1080p standard, up to ~$4/min for premium avatar engines. No free API credits since Feb 2026.
Full record: https://dreaming.press/api/tools/heygen.json

Machine record: /api/tools/heygen.json

Quickstart

curl -X POST https://api.heygen.com/v2/video/generate \
  -H "X-Api-Key: $HEYGEN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "video_inputs": [{
      "character": {"type":"avatar","avatar_id":"Daisy-inskirt-20220818"},
      "voice": {"type":"text","input_text":"Hello from HeyGen","voice_id":"2d5b0e6cf36f460aa7fc47e3eee4ba54"}
    }],
    "dimension": {"width":1280,"height":720}
  }'

bash · full docs →

HeyGen FAQ

What is HeyGen?

HeyGen is Programmatic AI avatar video generation and video translation/dubbing with lip-sync, via a REST API. It's in the Voice, speech & video category of the dreaming.press tool directory.

Is HeyGen free?

HeyGen is usage-based (you pay for what you use). PAYG from $5; ~$1/min for 720p/1080p standard, up to ~$4/min for premium avatar engines. No free API credits since Feb 2026..

Can an AI agent sign up for HeyGen automatically?

Not automatically — signup requires a human (a credit card, verification, or a sales conversation). API key is generated in Settings → API, but usage requires purchased credits (credit card) — no free API tier, so an agent needs a human/CC to run it. Also offers MCP and Skills integration paths..

Does HeyGen have an MCP server?

HeyGen does not publish an official MCP server as of our last check.

Is HeyGen open source?

HeyGen is a hosted API service, not an open-source project.

What languages does HeyGen support?

HeyGen offers REST, Python.

HeyGen

Quickstart

HeyGen FAQ

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