Soulx Flashhead

Soulx Flashhead

Playground

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.

Features

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

How to Use

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

Pricing

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.

# Submit the task
curl --location --request POST "https://api.wavespeed.ai/api/v3/wavespeed-ai/soulx-flashhead" \
--header "Content-Type: application/json" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}" \
--data-raw '{
    "resolution": "720p",
    "seed": -1
}'

# Get the result
curl --location --request GET "https://api.wavespeed.ai/api/v3/predictions/${requestId}/result" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}"