HeyGen Avatar V
HeyGen Avatar V is an avatar video generation model for talking digital twins and other eligible registered avatar looks. It improves identity preservation, lip sync accuracy, facial expressiveness, and motion coherence across angle changes, scene changes, and long-form videos, making it well suited to presenter, training, and localization workflows where avatar stability matters.
API Reference
INTEGRATE
Complete technical specification for integration
Request Response
Examples 4
CODE
Ready-to-use code snippets for common workflows
Guides 2
LEARN
Step-by-step tutorials for advanced use cases
Hydroponic Greenhouse Crop Update
{
"taskType": "videoInference",
"taskUUID": "efd587ff-029d-48b6-a63f-59be8f9172e9",
"model": "heygen:avatar@5",
"width": 1920,
"height": 1080,
"speech": {
"text": "Good morning, team. Today we are reviewing the crop health indicators for bay three. The key signal is leaf temperature stability: when it shifts more than two degrees from the target range, check airflow first, then nutrient flow, and finally sensor calibration. Keep notes short, record the timestamp, and escalate only if the pattern repeats across two full cycles. This keeps the harvest schedule predictable and helps every grow zone stay consistent.",
"voice": "piper_lifelike_female_english",
"language": "en-US",
"volume": 1,
"speed": 0.98,
"pitch": 0
},
"settings": {
"caption": true,
"fit": "contain",
"removeBackground": true
},
"inputs": {
"avatar": "Piper_standing_education_front",
"background": "https://assets.runware.ai/assets/inputs/2555d9cf-660e-46a0-9aa3-10900b4a28a6.jpg"
}
}{
"taskType": "videoInference",
"taskUUID": "efd587ff-029d-48b6-a63f-59be8f9172e9",
"videoUUID": "5c1f74bc-b531-4b1c-9b41-defd82e0dd5e",
"videoURL": "https://vm.runware.ai/video/os/a05d22/ws/5/vi/5c1f74bc-b531-4b1c-9b41-defd82e0dd5e.mp4",
"cost": 3.117
}Cyberpunk Megacity Transit Notice
{
"taskType": "videoInference",
"taskUUID": "f1412d17-3f7d-48f2-acfa-9b91435a0374",
"model": "heygen:avatar@5",
"width": 720,
"height": 1280,
"settings": {
"fit": "cover",
"removeBackground": true,
"caption": true
},
"inputs": {
"avatar": "Miyu_standing_office_front",
"audio": "https://assets.runware.ai/assets/inputs/73d3adf9-fd74-4afd-82dd-800b4fce666a.mp3",
"background": "https://assets.runware.ai/assets/inputs/31e24a81-19fd-4746-b37b-0ac62608ed47.jpg"
}
}{
"taskType": "videoInference",
"taskUUID": "f1412d17-3f7d-48f2-acfa-9b91435a0374",
"videoUUID": "45cba496-fc0b-44bf-8209-87899f03f17e",
"videoURL": "https://vm.runware.ai/video/os/a04d20/ws/5/vi/45cba496-fc0b-44bf-8209-87899f03f17e.mp4",
"cost": 2.544
}Orbital Robotics Safety Briefing
{
"taskType": "videoInference",
"taskUUID": "e487a81e-ec5a-48d6-8f7d-9e353ef7c122",
"model": "heygen:avatar@5",
"width": 1080,
"height": 1920,
"speech": {
"text": "Welcome to the orbital robotics bay. Before you activate a service drone, pause for a three point scan: confirm the arm path is clear, verify the magnetic tether is locked, and announce your movement to the crew channel. If a drone hesitates, do not pull it by hand. Step back, say hold position, and wait for the status ring to turn blue. Small habits like these keep the whole station precise, calm, and safe.",
"voice": "piper_lifelike_female_english",
"language": "en-US",
"volume": 1,
"speed": 0.95,
"pitch": 0
},
"settings": {
"backgroundColor": "#101828",
"caption": true,
"fit": "contain"
},
"inputs": {
"avatar": "Piper_standing_education_front"
}
}{
"taskType": "videoInference",
"taskUUID": "e487a81e-ec5a-48d6-8f7d-9e353ef7c122",
"videoUUID": "0aaf635a-609e-4b33-9ff4-a111cd1e7246",
"videoURL": "https://vm.runware.ai/video/os/a01d21/ws/5/vi/0aaf635a-609e-4b33-9ff4-a111cd1e7246.mp4",
"cost": 3.0336
}Glasshouse Pollinator Care Brief
{
"taskType": "videoInference",
"taskUUID": "37ff7d0c-1493-4b2b-84a4-f387ea1aab8d",
"model": "heygen:avatar@5",
"width": 1280,
"height": 720,
"settings": {
"caption": true,
"fit": "contain"
},
"inputs": {
"avatar": "Emilia_standing_outdoorbusiness_front",
"audio": "https://assets.runware.ai/assets/inputs/ed49784d-73a9-4faa-a866-93040acb0738.mp3"
}
}{
"taskType": "videoInference",
"taskUUID": "37ff7d0c-1493-4b2b-84a4-f387ea1aab8d",
"videoUUID": "d6afe885-06c4-4853-bfde-dad5f6d15101",
"videoURL": "https://vm.runware.ai/video/os/a04d20/ws/5/vi/d6afe885-06c4-4853-bfde-dad5f6d15101.mp4",
"cost": 2.616
}