Imagefrom$0.0248 / image

ChatGPT Image 2.5

Generates and edits images · up to 4 per request

text-to-imageimage-edit

curl -X POST https://api.open.sume.com/v1/image-router/generate \
  -H "Authorization: Bearer $SUME_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"gpt-image-2.5","prompt":"A studio product photo on a white sweep","aspect_ratio":"1:1","quality":"auto","num_images":1}'

1. Calling the API

ChatGPT Image 2.5 has the model id gpt-image-2.5. Send a JSON body to POST https://api.open.sume.com/v1/image-router/generate.

Parameter	Type	Required	Default	Description
model	string	Yes	—	"gpt-image-2.5"
prompt	string	Yes	—	What the image shows.
image_urls	string[]	No	—	Images to edit or follow (HTTPS).
aspect_ratio	string	No	1:1	Frame shape. Options: auto, 1:1, 16:9, 9:16, 4:3, 3:4, 5:4, 9:8, 4:5.
quality	string	No	auto	Quality tier (sets the price). Options: auto, low, medium, high, xhigh, max.
num_images	integer	No	1	Images per request, 1–4.

2. Authentication

Send your open.sume.com key as a bearer token from server code only. Keys minted on open.sume.com bill this balance in dollars and call the model API only.

Authorization: Bearer $SUME_API_KEY

3. Queue

A submit answers 202 with the job, its status_url and result_url. Poll the status until it is completed, failed or canceled; failed and canceled jobs are refunded.

Pricing

Dollars per unit at each option: the serving route's cost × 1.25, rounded up to $0.0001. The estimate above is the exact charge.

Option	Price
auto	$0.8895 / image
low	$0.0248 / image
medium	$0.0558 / image
high	$0.2225 / image
xhigh	$0.3954 / image
max	$0.8895 / image

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