Ideogram - Character

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 ideogram/character for this endpoint Default："ideogram/character"。 Allowed values：ideogram/character。 Example：ideogram/character。
prompt	string	Yes	Prompt required by the ModelFold gateway; at most 2000 characters. The prompt describing the scene to generate with the referenced character. (Max length: 5000 characters) maxLength: 2000. Example：Place the woman from the uploaded portrait, wearing a casual white blouse, in a peaceful garden setting. The scene should feature vibrant green plants and colorful flowers, with soft sunlight filtering through the leaves. She should be sitting on a wooden bench, holding a book and smiling gently. The background should be filled with lush greenery, with a serene, tranquil atmosphere. Golden afternoon light should highlight the woman’s face and create soft shadows on the ground, adding a peaceful, reflective mood to the scene。
reference_image_urls	array<string>	Yes	A set of images to use as character references. Currently only 1 image is supported, rest will be ignored. (maximum total size 10MB across all character references). The images should be in JPEG, PNG or WebP format (File URL after upload, not file content; Accepted types: image/jpeg, image/png, image/webp; Max size: 10.0MB) maxItems: 1.
rendering_speed	string	No	The rendering speed to use. Default value: "BALANCED" Default："BALANCED"。 Allowed values：TURBO / BALANCED / QUALITY。 Example：BALANCED。
style	string	No	The style type to generate with. Default value: "AUTO" Default："AUTO"。 Allowed values：AUTO / REALISTIC / FICTION。 Example：AUTO。
expand_prompt	boolean	No	Determine if MagicPrompt should be used in generating the request or not. Default value: true (Boolean value (true/false)) Example：true。
image_size	string	No	The resolution of the generated image Default value: square_hd Default："square_hd"。 Allowed values：square / square_hd / portrait_4_3 / portrait_16_9 / landscape_4_3 / landscape_16_9。 Example：square_hd。
seed	integer	No	Seed for the random number generator
negative_prompt	string	No	Description of what to exclude from an image. Descriptions in the prompt take precedence to descriptions in the negative prompt. Default value: "" (Max length: 5000 characters) maxLength: 5000. Example：``。

Request Example

curl -X POST "https://modelfold.ai/v1/images/generations" \
  -H "Authorization: Bearer $MODELFOLD_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "ideogram/character",
  "prompt": "Place the woman from the uploaded portrait, wearing a casual white blouse, in a peaceful garden setting. The scene should feature vibrant green plants and colorful flowers, with soft sunlight filtering through the leaves. She should be sitting on a wooden bench, holding a book and smiling gently. The background should be filled with lush greenery, with a serene, tranquil atmosphere. Golden afternoon light should highlight the woman’s face and create soft shadows on the ground, adding a peaceful, reflective mood to the scene",
  "reference_image_urls": [
    "https://example.com/reference.png"
  ],
  "rendering_speed": "BALANCED",
  "style": "AUTO",
  "image_size": "square_hd"
}'

{
  "model": "ideogram/character",
  "prompt": "Place the woman from the uploaded portrait, wearing a casual white blouse, in a peaceful garden setting. The scene should feature vibrant green plants and colorful flowers, with soft sunlight filtering through the leaves. She should be sitting on a wooden bench, holding a book and smiling gently. The background should be filled with lush greenery, with a serene, tranquil atmosphere. Golden afternoon light should highlight the woman’s face and create soft shadows on the ground, adding a peaceful, reflective mood to the scene",
  "reference_image_urls": [
    "https://example.com/reference.png"
  ],
  "rendering_speed": "BALANCED",
  "style": "AUTO",
  "image_size": "square_hd"
}

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": {}
}