Generate Images Using GPT1.5

Follow this recipes to generate images using the GPT1.5 model.

Generate with GPT1.5 Model Using Uploaded Image

Open Recipe

Sample Request

curl --location 'https://cloud.leonardo.ai/api/rest/v2/generations' \
     --header 'authorization: Bearer {api-key}' \
     --header 'Content-Type: application/json' \
       --data '
{
  "public": false,
  "model": "gpt-image-1.5",
  "parameters": {
    "mode": "QUALITY",
    "prompt": "Koala with purple hat",
    "quantity": 2,
    "width": 1024,
    "height": 1024,
    "seed": 4294967295,
    "guidances": {
      "image_reference": [
        {
          "image": {
            "id": "00000000-0000-0000-0000-000000000001",
            "type": "UPLOADED"
          },
          "strength": 0.5,
          "prompt_enhance": "OFF"
        }
      ]
    }
  }
}
'

Parameters

model - Set to gpt-image-1.5
height - Supports 1024 and 1536
width - Supports 1024 and 1536
quantity - Number of images generated
mode - FAST, QUALITY, ULTRA
guidances.image_reference - List of image references up to 6. Supports uploaded images and images generated on the Leonardo platform.
seed - Randomisation parameter.

Aspect Ratio Settings

Aspect Ratio	Width	Height
2:3	1024	1536
1:1	1024	1024
3:2	1536	1024

Cost

Pricing is a function of the base cost, input height, input width, quantity, mode and whether or not image references were used. Refer to the calculation below to get the API credit cost based on your settings.

Cost = Base * Height * Width * Quantity * Mode * Image Reference

Base = 0.0000123977

Parameter	Multiplier
Height	The height setting itself.
Width	The width setting itself.
Quantity	The quantity setting itself.
Mode	1 if set to FAST 2.92 if set to QUALITY 10.538 if set to ULTRA
Image Reference	1 if there are no image references 1.2 if at least one image reference is used

For example, assuming following settings:

{
  "public": false,
  "model": "gpt-image-1.5",
  "parameters": {
    "mode": "QUALITY",
    "prompt": "Koala with purple hat",
    "quantity": 2,
    "width": 1024,
    "height": 1024,
    "seed": 4294967295,
    "guidances": {
      "image_reference": [
        {
          "image": {
            "id": "00000000-0000-0000-0000-000000000001",
            "type": "UPLOADED"
          },
          "strength": 0.5,
          "prompt_enhance": "OFF"
        }
      ]
    }
  }
}

Cost = 0.0000123977 * 1024 * 1024 * 2 * 2.92 * 1.2 = 92 API Credits (Rounded up to the nearest credit.)