JiMeng 4.0 - Image Generation

Overview

• • Method: POST
• • Path: /v1/images/generations
• • Content-Type: application/json

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Authentication

• Authorization: Bearer sk-xxx (required)

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Request Example

Header

Header	Example	Required
Content-Type	application/json	Yes
Authorization	Bearer sk-xxxx	Yes

Request Body (JSON)

{
  "model": "doubao-seedream-4-0-250828",
  "prompt": "DD style, OC renderer, trendy toy style, porcelain; porcelain figure (black-haired model wearing a 3D batik embroidered Miao short skirt, skirt hem like blooming crown, panoramic composition showing cool white skin and flowing wave patterns in the skirt; batik patterns and silver head crown create 3D echo with batik embroidery, barefoot standing. Matte fabric shifts pearl luster in cool-toned light. Fusion with Western oil painting texture) on raw rice paper with blush gradient on the face, full body.",
  "response_format": "url",
  "size": "2k",
  "watermark": false
}

Parameter Description

Parameter	Type	Required	Default	Description
prompt	string	Yes	-	Prompt for image generation, supports Chinese and English, recommended <=300 Chinese chars or 600 English words
model	string	Yes	-	Model name, e.g. doubao-seedream-4-0-250828
response_format	string	No	url	Output format, url or b64_json
size	string	No	1024x1024	Image size, supports arbitrary 1024-4096 dimensions (4.0 supports 1k/2k/4k)
watermark	boolean	No	false	Add bottom-right 'AI generated' watermark

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Response Example (200)

{
  "model": "doubao-seedream-4-0-250828",
  "created": 1748334192,
  "data": [
    {
      "url": "https://ark-content-generation-v2-cn-beijing.tos-cn-beijing.volces.com/doubao-seedream-3-0-t2i/0217483341891267365728335807c27305757677c12880620da91.jpeg?X-Tos-Algorithm=TOS4-HMAC-SHA256&X-Tos-Credential=AKLTYjg3ZjNlOGM0YzQyNGE1MmI2MDFiOTM3Y2IwMTY3OTE%2F20250527%2Fcn-beijing%2Ftos%2Frequest&X-Tos-Date=20250527T082312Z&X-Tos-Expires=86400&X-Tos-Signature=82b5f59cd2c306850ed9a6649a0a9fa4311ed356ad0ba1adbe11a46dea779bde&X-Tos-SignedHeaders=host&x-tos-process=image%2Fwatermark%2Cimage_YXNzZXRzL3dhdGVybWFyay5wbmc_eC10b3MtcHJvY2Vzcz1pbWFnZS9yZXNpemUsUF83"
    }
  ],
  "usage": {
    "generated_images": 1
  }
}