Image

Seedream 4 image

Seedream 4 — text-to-image with optional refs. 1K/2K/4K. n 1-15.

Category: Create · seedream-4

How to use & limits

Text-to-image with optional references for editing.
resolution: 1K, 2K or 4K (default 2K).
Optional references: up to 10 images.
n: 1 to 15 images; image_urls + n together must not exceed 15.
size: 1:1, 3:4, 4:3, 16:9, 9:16, 3:2, 2:3 or 21:9.

Capabilities

What this model supports, straight from the schema — no pricing, no infrastructure detail.

Capability	Value
`n_max` Max variations per job	15
`create_image` Text-to-image	Yes
`image_to_image` Image-to-image	Yes
`allowed_resolutions` Allowed resolutions	1K, 2K, 4K
`max_reference_images` Max reference images	10

Parameters

Fields accepted in params (or first-class, where applicable) for POST /generations.

Name	Label	Type	Required	Default	Options	Min / Max	Description
`resolution`	Resolution	select	Optional	2K	1K · 2K · 4K	—	Resolution: 1K, 2K or 4K. Default 2K.
`size`	Size	select	Optional	1:1	1:1 · 3:4 · 4:3 · 16:9 · 9:16 · 3:2 · 2:3 · 21:9	—	Aspect ratio: 1:1, 3:4, 4:3, 16:9, 9:16, 3:2, 2:3 or 21:9. Default 1:1.
`n`	Quantity	number	Optional	1	—	1 – 15	Number of images, 1 to 15. Default 1. image_urls + n ≤ 15.
`image_urls`	Optional references	multi_select	Optional	—	—	— – 10	Optional references: up to 10 images to guide or edit.
`prompt`	Prompt	textarea	Required	—	—	—	Image or edit description. Required.

Example request

bash

curl -X POST https://caranguejo.art/api/v1/dev/generations \
  -H "Authorization: Bearer $CK" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "seedream-4",
  "prompt": "Serene Japanese garden with cherry blossoms and a koi pond.",
  "params": {
    "resolution": "2K",
    "size": "16:9",
    "n": 1
  }
}'

javascript

const res = await fetch("https://caranguejo.art/api/v1/dev/generations", {
  method: "POST",
  headers: {
    "Authorization": "Bearer " + process.env.CK,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    "model": "seedream-4",
    "prompt": "Serene Japanese garden with cherry blossoms and a koi pond.",
    "params": {
      "resolution": "2K",
      "size": "16:9",
      "n": 1
    }
  }),
});
const { data } = await res.json();

Example response

json

{
  "id": "9f0c1a7e-…",
  "object": "generation",
  "model": "seedream-4",
  "type": "image",
  "status": "completed",
  "output": {
    "assets": [
      {
        "url": "https://media.caranguejo.art/outputs/example.png",
        "type": "image"
      }
    ],
    "images": [
      {
        "url": "https://media.caranguejo.art/outputs/example.png"
      }
    ]
  }
}

The job's real cost is returned as credits_charged on the completed response — check GET /balance for the account balance.

Common errors for this job type:

`insufficient_credits`	Account balance can't cover the job cost.
`content_policy_violation`	Prompt or media rejected by content policy.
`generation_timeout`	The job exceeded the maximum processing time.
`rate_limited`	Too many requests per minute.
`invalid_input`	A required parameter is missing or outside the model's schema.
`generation_failed`	Generic processing failure.