OverblastHeyGen · video model
Avatar IV
HeyGen: Avatar IV is a video model on the Overblast AI Gateway. Call it as heygen/avatar-iv with one Overblast API key, paid from your AI credits.
Prices are final: what a call costs in AI credits, in US dollars. As of 2 October 2026, from the live catalogue.
Price
| Price | $0.10 / second |
|---|
What it does
| Does | Talking portrait from a photo and a script |
|---|---|
| Resolutions | 720p, 1080p |
| Aspect ratios | 16:9, 9:16, 1:1 |
| Sound | Silent |
Where it runs
| Regions | Runs globally; it cannot be pinned to the EU or the US yet |
|---|---|
| Zero data retention | Not applicable: video calls cannot carry the requirement |
| Endpoint | POST /v1/videos |
Call it
curl https://ai.overblast.app/v1/videos \
-H "Authorization: Bearer $OVERBLAST_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "heygen/avatar-iv",
"prompt": "A paper boat drifting down a rainy street"
}'
# then poll GET /v1/videos/{id}, and fetch the clip from /v1/videos/{id}/contentAll video models and their prices · How the AI Gateway works