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POST
/
v1
/
images
/
generations
curl --request POST \
  --url https://api.apimart.ai/v1/images/generations \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
    "model": "gpt-4o-image",
    "prompt": "An ancient castle under the starry sky",
    "size": "1:1",
    "n": 1,
    "image_urls": [
      "https://cdn.apimart.ai/doc/9998238784524590-549804af-14bc-4fbc-bae5-9d8469d35de3-image_task_01K889V97T2YF8RHQW21XMVMS1_0.png"
    ]
  }'

{
  "code": 200,
  "data": {
    "created": 1757156493,
    "id": "task_01J9HC8X5M7P3QKWN2R9T4VYZ6",
    "model": "gpt-4o-image",
    "object": "image.generation.task",
    "progress": 0,
    "status": "pending",
    "task_info": {
      "can_cancel": true,
      "estimated_time": 100
    },
    "type": "image"
  }
}

curl --request POST \
  --url https://api.apimart.ai/v1/images/generations \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
    "model": "gpt-4o-image",
    "prompt": "An ancient castle under the starry sky",
    "size": "1:1",
    "n": 1,
    "image_urls": [
      "https://cdn.apimart.ai/doc/9998238784524590-549804af-14bc-4fbc-bae5-9d8469d35de3-image_task_01K889V97T2YF8RHQW21XMVMS1_0.png"
    ]
  }'

{
  "code": 200,
  "data": {
    "created": 1757156493,
    "id": "task_01J9HC8X5M7P3QKWN2R9T4VYZ6",
    "model": "gpt-4o-image",
    "object": "image.generation.task",
    "progress": 0,
    "status": "pending",
    "task_info": {
      "can_cancel": true,
      "estimated_time": 100
    },
    "type": "image"
  }
}

​
Authorizations

​
Authorization
string
required
All API endpoints require Bearer Token authenticationGet your API Key:Visit the API Key Management Page to get your API KeyAdd it to the request header:
Authorization: Bearer YOUR_API_KEY

​
Body

​
model
string
default:"gpt-4o-image"
required
Image generation model nameExample: "gpt-4o-image"
​
prompt
string
required
Text description for image generationMaximum 1000 characters
​
size
string
Image generation sizeSupported formats:
  • Ratios: 1:1, 2:3, 3:2
​
n
integer
Number of images to generateSupports 1, 2, 4. Charges will be pre-deducted based on the number
​
image_urls
array
Reference image URL list for image-to-image or image editing
  • Maximum 5 images
  • Each image should not exceed 10MB
  • Supported formats: .jpeg, .jpg, .png, .webp
​
mask_url
string
Mask image URL
  • Must be PNG format
  • Size must match the reference image
  • Maximum 4MB

​
Response

​
created
integer
Task creation timestamp
​
id
string
Unique task identifier
​
model
string
The actual model name used
​
object
string
Object type, fixed as image.generation.task
​
progress
integer
Task completion progress percentage (0-100)
​
status
string
Task statusPossible values:
  • pending - Waiting for processing
  • processing - In progress
  • completed - Completed
  • failed - Failed
​
task_info
object
Task details
​
type
string
Output type, fixed as image
​
usage
object
Billing information