Avatar IV
by HeyGen
HeyGen's talking-avatar model: animate a portrait with natural speech and performance.
Avatar IV turns a single reference photo plus a prompt into a lifelike talking video with lip-synced speech, expression, and gesture in 720p or 1080p. Built for presenter-style clips and spokesperson content.
More details
Avatar IV by HeyGen is a standard-speed AI video generation model. Avatar IV turns a single reference photo plus a prompt into a lifelike talking video with lip-synced speech, expression, and gesture in 720p or 1080p. Built for presenter-style clips and spokesperson content. Key capabilities include image-to-video, native audio generation, clips of 5, 10 seconds, output up to 1080p, 3 aspect ratios.
Avatar IV is priced from $0.06 per second of generated video — a 5-second 720p clip costs about $0.30. You can generate videos with Avatar IV on idapt.app alongside 200+ AI models in one workspace.
Pricing
Cost per second
from $0.06
Price range
$0.06 – $0.06
Varies by resolution & audio
| Resolution | Audio | Per second | Per 5s clip |
|---|---|---|---|
| 720p | Included | $0.06 | $0.30 |
| 1080p | Included | $0.06 | $0.30 |
Capabilities
Speed
Standard: A few minutes per clip
Generation modes
Image to video
Clip length
5s, 10s
Aspect Ratios
16:9, 9:16, 1:1
Audio output
Native audio
Resolutions
720p, 1080p
How to generate videos
In chat
Use Avatar IV to make a 5-second video of a sunset over the oceanAPI
POST /api/v1/videos/generations
{"prompt": "A sunset over the ocean", "model": "heygen-avatar-iv"}CLI
idapt video generate --model heygen-avatar-iv --prompt "A sunset over the ocean"Video generation runs in the background. Poll the returned operation until the clip is ready.
