SoulX FlashHead

SoulX FlashHead generates realistic talking head videos by combining a portrait image with audio. Upload a face image and audio clip — the model creates a lip-synced video with natural facial movements and expressions. With support for audio clips up to 30 minutes and budget-friendly pricing, it's ideal for long-form talking avatar content.

Why Choose This?

Long-form support Generate talking avatar videos with audio up to 30 minutes in length.
Realistic lip-sync Accurate lip movements synchronized to the audio input.
Natural expressions Creates realistic facial movements and expressions during speech.
Budget-friendly Lower cost per second compared to other talking avatar models.
Resolution options Choose between 480p and 720p output quality.

Parameters

Parameter	Required	Description
image	Yes	Portrait image for the avatar (URL or upload)
audio	Yes	Audio clip for lip-sync (URL or upload, max: 30 min)
resolution	No	Output resolution: 480p, 720p (default)
seed	No	Random seed for reproducibility (-1 for random)

How to Use

Upload your image — provide a clear portrait image with visible face.
Upload your audio — add the audio clip you want the avatar to speak (up to 30 minutes).
Select resolution — choose 720p for higher quality or 480p for faster/cheaper processing.
Run — submit and download your talking avatar video.

Pricing

Duration	720p	480p
≤5 s	$0.15	$0.075
10 s	$0.30	$0.15
30 s	$0.90	$0.45
60 s	$1.80	$0.90
5 min	$9.00	$4.50

Billing Rules

Minimum charge: 5 seconds
Maximum duration: 1800 seconds (30 minutes)
480p rate: $0.075 per 5 seconds
720p rate: $0.15 per 5 seconds (2× 480p rate)

Best Use Cases

Long-Form Content — Create extended talking avatar videos for podcasts, lectures, and presentations.
E-learning — Generate instructor avatars for educational courses and tutorials.
Digital Presenters — Produce talking avatars for video presentations and explainers.
Marketing & Ads — Create spokesperson videos without filming.
Localization — Generate lip-synced videos in different languages from the same avatar.

Pro Tips

Use clear, front-facing portrait images with good lighting for best results.
Ensure the face is clearly visible and not obscured by hair or accessories.
Use high-quality audio with clear speech for accurate lip-sync.
Choose 480p for longer content to reduce costs — it still provides good quality.
Set a specific seed for reproducible results across multiple generations.

Notes

Both image and audio are required fields.
Maximum audio duration: 30 minutes (1800 seconds).
Minimum charge: 5 seconds (shorter clips billed as 5 seconds).
720p resolution costs 2× the 480p rate.
Ensure uploaded file URLs are publicly accessible.

Related Models

SkyReels V3 Talking Avatar — Higher quality for short clips (up to 15s).
DreamActor V2 — Motion transfer from driving video to character image.
Wan 2.6 Image-to-Video — General image-to-video generation.

SoulX FlashHead enables real-time streaming talking head video generation from portrait image and audio with ultra-fast 96 FPS performance. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing.

ExamplesView all

README