Image$0.0800 / image

Flux Kontext Max

Generates images from text · up to 4 per request

text-to-image

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":"flux-kontext-max","prompt":"A studio product photo on a white sweep","aspect_ratio":"1:1","num_images":1}'

1. Calling the API

Flux Kontext Max has the model id flux-kontext-max. Send a JSON body to POST https://api.open.sume.com/v1/image-router/generate.

Parameter	Type	Required	Default	Description
model	string	Yes	—	"flux-kontext-max"
prompt	string	Yes	—	What the image shows.
aspect_ratio	string	No	1:1	Frame shape. Options: 21:9, 16:9, 4:3, 3:2, 1:1, 2:3, 3:4, 9:16, 9:21.
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.

GET https://api.open.sume.com/v1/jobs/<job_id>/status
GET https://api.open.sume.com/v1/jobs/<job_id>/result
POST https://api.open.sume.com/v1/jobs/<job_id>/cancel

Pricing

Dollars per unit at each option, from our rate card; a request rounds up to $0.0001. The estimate above is the exact charge.

Option	Price
per image	$0.0800 / image

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