alibaba/head-swap

Name: Head Swap
Author: Alibaba

Head Swap replaces the head in a target image with the head from a source image, producing a realistic head-swapped result.

Input

Image URL or upload(string)

Upload

PNG, JPEG, WebP, or GIF · 20 MiB maximum

The target image whose head will be replaced (URL or Base64-encoded string). Maximum file size is 50 MB.

This field is required.

Image URL or upload(string)

Upload

PNG, JPEG, WebP, or GIF · 20 MiB maximum

The image containing the head to use as the source (URL or Base64-encoded string). Maximum file size is 50 MB.

This field is required.

Seed(integer)

Random seed. Omit for an auto-generated seed.

Idle

Example output — click Run to generate your own

Production endpoint

Send your first request

OpenAI-compatible endpoint with unified authentication and usage tracking.

POSThttps://api.sandbase.ai/v1/run

Model IDalibaba/head-swap

Input Schema

3 parameters · 2 required · 1 optional

Parameter	Type	Required	Description
`image`	string	Required	The target image whose head will be replaced (URL or Base64-encoded string). Maximum file size is 50 MB.
`head_image`	string	Required	The image containing the head to use as the source (URL or Base64-encoded string). Maximum file size is 50 MB.
`seed`	integer	Optional	Random seed. Omit for an auto-generated seed.

Output Schema

Field	Type	Description
`id`	string	Unique identifier for the generation task
`status`	string	Task status: pending, running, completed, failed, timeout
`model`	string	Model used for the generation
`outputs`	array	Array of output items
`outputs[].url`	string	URL of the generated artifact
`outputs[].content_type`	string	MIME type (e.g. image/png, video/mp4)
`error`	object \| null	Error details if failed, null on success
`error.type`	string	Machine-readable error type code
`error.message`	string	Human-readable error description

Async Workflow

This model uses asynchronous execution. Submit a request and poll for the result.

Submit — POST to /v1/run, receive an id
Poll — GET /v1/run/{id} until status is completed, failed, or timeout
Retrieve — Read outputs from the completed response

Code Examples

Ready-to-run snippets

# Step 1: Submit
curl -X POST https://api.sandbase.ai/v1/run \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
  "model": "alibaba/head-swap",
  "prompt": "a beautiful sunset over mountains"
}'

# Step 2: Poll result (replace <id>)
curl https://api.sandbase.ai/v1/run/<id> \
  -H "Authorization: Bearer YOUR_API_KEY"

← Back to Head Swap

API README

Head Swap

Head Swap replaces the entire head in a target image with the head from a source image — including face, head shape, and hairstyle. Priced at $0.013 per image.

Highlights

Full head replacement — Replaces the face, head shape, and hairstyle together for a complete identity transfer.

Dual-image input — Provide a source head and a target image; automatic seamless blending is applied.

Realistic compositing — Maintains consistent lighting, skin tone, and perspective with the target body.

Low cost — At $0.013 per image, suitable for high-volume creative and commercial workflows.

Pricing

Metric	Price
Per image	$0.013

When to Use

✅ Good fit	❌ Consider alternatives
Full identity transfer across images	Face-only swap preserving original hairstyle (use Face Swap)
Casting previews and lookbooks	Style or background editing (use Qwen Image Edit Exp0622)
Character design and creative compositing	Video head swap
E-commerce model replacement	New image generation from scratch (use Z-Image Exp0622)

Technical Specs

Spec	Value
Input	Source image (head) + target image (URL or Base64, max 50 MB each)
Output	Head-swapped image (PNG/JPEG)
Swapped region	Full head (face, head shape, and hairstyle)
Execution	Async (submit → poll for result)