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POST

Portkey is now PRISMA AIRS AI Gateway. See it in action.

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Authorizations

x-portkey-api-key
string
header
required
x-portkey-virtual-key
string
header
required

Body

multipart/form-data
image
file
required

The image to edit. Must be a valid PNG file, less than 4MB, and square. If mask is not provided, image must have transparency, which will be used as the mask.

prompt
string
required

A text description of the desired image(s). The maximum length is 1000 characters.

Example:

"A cute baby sea otter wearing a beret"

mask
file

An additional image whose fully transparent areas (e.g. where alpha is zero) indicate where image should be edited. Must be a valid PNG file, less than 4MB, and have the same dimensions as image.

model
default:dall-e-2

The model to use for image generation. Only dall-e-2 is supported at this time.

Example:

"dall-e-2"

n
integer | null
default:1

The number of images to generate. Must be between 1 and 10.

Required range: 1 <= x <= 10
Example:

1

size
enum<string> | null
default:1024x1024

The size of the generated images. Must be one of 256x256, 512x512, or 1024x1024.

Available options:
256x256,
512x512,
1024x1024
Example:

"1024x1024"

response_format
enum<string> | null
default:url

The format in which the generated images are returned. Must be one of url or b64_json. URLs are only valid for 60 minutes after the image has been generated.

Available options:
url,
b64_json
Example:

"url"

user
string

A unique identifier representing your end-user, which can help OpenAI to monitor and detect abuse. Learn more.

Example:

"user-1234"

Response

200 - application/json

OK

created
integer
required
data
object[]
required
Last modified on August 6, 2026