AI Avatar Video API
Generate animated talking-head videos from a single portrait photo. Choose audio-driven or video-driven animation modes. No subscription — pay per video.
50 free credits on signup — enough for 5 avatar videos.
Two animation modes
Choose the right mode for your use case.
Audio-Driven
Photo + AudioUpload a portrait photo and an audio file. Our AI generates a video where the face speaks the audio with natural head movements and expressions.
Inputs
- Portrait image (JPG, PNG)
- Audio file (MP3, WAV)
Options
- Expression control (neutral, happy, sad, angry, surprised)
Video-Driven
Photo + VideoUpload a portrait photo and a driving video. Our AI transfers the motion, expressions, and lip movements from the video onto the portrait.
Inputs
- Portrait image (JPG, PNG)
- Driving video (MP4)
Options
- Stitching, relative motion, auto-crop, motion intensity
- Animation region (all, expression, pose, lip, eyes)
How it works
Generate avatar videos in three steps.
Upload Files
POST a portrait image with an audio file or driving video to the avatar endpoint.
AI Renders
Our AI runs on dedicated GPUs. Processing is async — poll the task or register a webhook.
Get Video URL
Receive a signed URL to your generated video. Download or embed it in your application.
Pricing comparison
See how Hudsonly AI stacks up against other avatar video providers.
| Provider | Price | Subscription | Custom Portraits | API Access |
|---|---|---|---|---|
| Hudsonly AI | from $0.18/video | No | Any photo | REST API |
| D-ID | $0.10–0.25/min | $5.90–299/mo | Limited free | REST API |
| HeyGen | ~$0.10/min | $24–180/mo | Yes | REST API |
| Synthesia | ~$2.25/min | $29–99/mo | Yes | REST API |
Prices as of early 2025. Hudsonly AI starts at 10 credits per video ($0.018/credit), not per minute — short clips are especially cost-effective.
Use cases
Marketing Videos
Create engaging spokesperson videos from a single photo. Scale video content production without hiring actors or studios.
Educational Content
Generate instructor-led video lessons from text scripts. Perfect for e-learning platforms and training materials.
Personalized Messages
Send personalized video messages at scale. Great for customer outreach, event invitations, and announcements.
Create your first avatar video
Sign up free and get 50 credits — enough for 5 avatar videos.