Seedream5.0 Flash - Text to Image

Endpoint

POST /images/generations

Full URL: https://modelfold.ai/v1/images/generations

Authentication: every request must include the Authorization: Bearer <API_KEY> header.

Send model parameters directly in the JSON body. Do not wrap them in input. This request waits for generation to finish and returns data[].url; supported media models also offer async jobs, polling and callbacks. Replace example media URLs with your own publicly accessible files. See API gateway for billing and errors.

Input parameters for the generation task

Request Parameters

Body (application/json)

Parameter	Type	Required	Description
model	string	Yes	The model name to use for generation. Required field. - Must be seedream/5-flash-text-to-image for this endpoint Default："seedream/5-flash-text-to-image"。 Allowed values：seedream/5-flash-text-to-image。 Example：seedream/5-flash-text-to-image。
aspect_ratio	string	Yes	Required. Width-height ratio of the image, determining its visual form. Allowed values：1:1 / 4:3 / 3:4 / 16:9 / 9:16 / 2:3 / 3:2 / 21:9。 Example：1:1。
output_format	string	No	Output image format. Set this field explicitly. Allowed values：png / jpeg。 Example：png。
prompt	string	Yes	Prompt required by the ModelFold gateway; at most 2000 characters. Text prompt, 4–5000 characters. minLength: 4. maxLength: 2000. Example：A full-process cafe design tool for entrepreneurs and designers. It covers core needs including store layout, functional zoning, decoration style, equipment selection, and customer group adaptation, supporting integrated planning of "commercial attributes + aesthetic design." Suitable as a promotional image for a cafe design SaaS product, with a 16:9 aspect ratio.。
size	string	No	Resolution level of the output image. Default："1K"。 Allowed values：1K / 1.5K / 2K。 Example：1K。

Request Example

curl -X POST "https://modelfold.ai/v1/images/generations" \
  -H "Authorization: Bearer $MODELFOLD_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "seedream/5-flash-text-to-image",
  "aspect_ratio": "1:1",
  "prompt": "A full-process cafe design tool for entrepreneurs and designers. It covers core needs including store layout, functional zoning, decoration style, equipment selection, and customer group adaptation, supporting integrated planning of \"commercial attributes + aesthetic design.\" Suitable as a promotional image for a cafe design SaaS product, with a 16:9 aspect ratio.",
  "size": "1K"
}'

{
  "model": "seedream/5-flash-text-to-image",
  "aspect_ratio": "1:1",
  "prompt": "A full-process cafe design tool for entrepreneurs and designers. It covers core needs including store layout, functional zoning, decoration style, equipment selection, and customer group adaptation, supporting integrated planning of \"commercial attributes + aesthetic design.\" Suitable as a promotional image for a cafe design SaaS product, with a 16:9 aspect ratio.",
  "size": "1K"
}

Response

200 — Generation completed. usage contains actual billing details; result URLs are illustrative.

{
  "ok": true,
  "created": 1792134000,
  "data": [
    {
      "url": "https://modelfold.ai/uploads/outputs/result.png"
    }
  ],
  "usage": {}
}