Seedream 4.0 Edit (Image-to-image)

This documentation is valid for the following list of our models:

• bytedance/seedream-v4-edit

Try in Playground

Model Overview

The model supports background replacement, object editing, style and color adjustments, lighting and texture enhancements, and artistic filters, while ensuring character consistency and allowing iterative refinement.

Setup your API Key

If you don’t have an API key for the AI/ML API yet, feel free to use our Quickstart guide.

API Schema

post

Body

application/json

modelstring · enumRequiredPossible values:

image_urlsstring · uri[] · min: 1 · max: 10Required

List of URLs or local Base64 encoded images to edit.

image_sizeany ofOptional

The size of the generated image.

Default: square_hd

string · enumOptionalPossible values:

or

seedinteger · min: 1Optional

The same seed and the same prompt given to the same version of the model will output the same image every time.

sync_modebooleanOptional

If set to true, the function will wait for the image to be generated and uploaded before returning the response. This will increase the latency of the function but it allows you to get the image directly in the response without going through the CDN.

Default: false

enable_safety_checkerbooleanOptional

If set to True, the safety checker will be enabled.

Default: true

promptstring · max: 4000Required

The text prompt describing the content, style, or composition of the image to be generated.

num_imagesnumber · min: 1 · max: 4Optional

The number of images to generate.

Default: 1

Responses

200Success

application/json

post

/v1/images/generations

JavaScriptPythoncURLHTTP

async function main() {
  const response = await fetch('https://api.aimlapi.com/v1/images/generations', {
    method: 'POST',
    headers: {
      'Authorization': 'Bearer <YOUR_AIMLAPI_KEY>',
      'Content-Type': 'application/json',
    },
    body: JSON.stringify({
      "model": "bytedance/seedream-v4-edit",
      "prompt": "Combine the images so the T-Rex is wearing a business suit, sitting in a cozy small café, drinking from the mug. Blur the background slightly to create a bokeh effect.",
      "image_urls": [
        "https://raw.githubusercontent.com/aimlapi/api-docs/main/reference-files/t-rex.png",
        "https://raw.githubusercontent.com/aimlapi/api-docs/main/reference-files/blue-mug.jpg"
      ]
    }),
  });

  const data = await response.json();
  console.log(JSON.stringify(data, null, 2));
}

main();

200Success

{
  "data": [
    {
      "url": "https://cdn.aimlapi.com/generations/hedgehog/1749730923700-29fe35d2-4aef-4bc5-a911-6c39884d16a8.png",
      "b64_json": null
    }
  ],
  "meta": {
    "usage": {
      "tokens_used": 120000
    }
  }
}

Quick Example

Let's generate an image using two input images and a prompt that defines how they should be edited.

Python

import requests
import json  # for getting a structured output with indentation

response = requests.post(
    "https://api.aimlapi.com/v1/images/generations",
    headers={
        # Insert your AIML API Key instead of <YOUR_AIMLAPI_KEY>:
        "Authorization":"Bearer <YOUR_AIMLAPI_KEY>",
        "Content-Type":"application/json",
    },
    json={
        "model":"bytedance/seedream-v4-edit",
        "prompt": "Add a bird to the foreground of the photo.",
        "image_urls": [ 
             "https://raw.githubusercontent.com/aimlapi/api-docs/main/reference-files/t-rex.png"
        ]
    }
)

data = response.json()
print(json.dumps(data, indent=2, ensure_ascii=False))

JS

Response

{
  "images": [
    {
      "url": "https://v3b.fal.media/files/b/kangaroo/nHWHZmeMr-SL4R7uFtvq7_d54b8823cf784f67bcfa43993bdb2179.png",
      "content_type": "image/png",
      "file_name": "d54b8823cf784f67bcfa43993bdb2179.png",
      "file_size": 1033237,
      "width": null,
      "height": null
    }
  ],
  "seed": 623004765,
  "data": [
    {
      "url": "https://v3b.fal.media/files/b/kangaroo/nHWHZmeMr-SL4R7uFtvq7_d54b8823cf784f67bcfa43993bdb2179.png",
      "content_type": "image/png",
      "file_name": "d54b8823cf784f67bcfa43993bdb2179.png",
      "file_size": 1033237,
      "width": null,
      "height": null
    }
  ],
  "meta": {
    "usage": {
      "tokens_used": 63000
    }
  }
}

Reference Image	Generated Image
(original)	"Add a bird to the foreground of the photo."