What is the difference between Flux 3 Klein Text to Image and GPT Image 2.6 Economy Image to Image?

Flux 3 Klein Text to Image is made by Black Forest Labs and GPT Image 2.6 Economy Image to Image by OpenAI; both are image models in the GetRun catalog. The difference you feel most in use is in the input parameters: Flux 3 Klein Text to Image accepts seed, num_images, resolution, nsfw_checker, enhance_prompt, while GPT Image 2.6 Economy Image to Image accepts background, input_urls. 3 parameters are shared by both.

Which is cheaper, Flux 3 Klein Text to Image or GPT Image 2.6 Economy Image to Image?

A sample run of Flux 3 Klein Text to Image costs From Rp130 / image, and GPT Image 2.6 Economy Image to Image costs Rp400 / image. Those are the cost of one sample run, not a flat rate: models billed per unit are recalculated from the duration or token count you ask for, and the estimated total is always shown before the task is created.

GetRun / Image / Flux 3 Klein Text to Image vs GPT Image 2.6 Economy Image to Image

Flux 3 Klein Text to Image vs GPT Image 2.6 Economy Image to Image

Flux 3 Klein Text to Image from Black Forest Labs and GPT Image 2.6 Economy Image to Image from OpenAI are both image models you can run from one GetRun account on a rupiah balance. A sample run costs From Rp130 / image against Rp400 / image, and both show an estimate before the task is created. The comparison below is assembled from the catalog, so the figures match what is billed.

Comparison table

	Flux 3 Klein Text to Image	GPT Image 2.6 Economy Image to Image
Provider	Black Forest Labs	OpenAI
Cost of one sample run	From Rp130 / image	Rp400 / image
Estimated processing time	10 to 180 seconds	10 to 180 seconds
Availability	available now	available now
Capabilities	Up to 4K, 1–4 images	1K, Transparent background
Number of input parameters	8	5

The parameters that set them apart

Of the 10 parameters that appear on either model, 3 are used by both. Only Flux 3 Klein Text to Image accepts seed, num_images, resolution, nsfw_checker, enhance_prompt. Only GPT Image 2.6 Economy Image to Image accepts background, input_urls.

Trying both

Both are called the same way — POST https://getrun.id/v1/tasks with {"model": "flux-3/klein-text-to-image"} or {"model": "gpt-image-2-6/economy-image-to-image"} — so swapping one for the other means changing a single value, with no other code to touch. Open Flux 3 Klein Text to Image or GPT Image 2.6 Economy Image to Image for sample output and the full parameter list.

Common questions

What is the difference between Flux 3 Klein Text to Image and GPT Image 2.6 Economy Image to Image?: Flux 3 Klein Text to Image is made by Black Forest Labs and GPT Image 2.6 Economy Image to Image by OpenAI; both are image models in the GetRun catalog. The difference you feel most in use is in the input parameters: Flux 3 Klein Text to Image accepts seed, num_images, resolution, nsfw_checker, enhance_prompt, while GPT Image 2.6 Economy Image to Image accepts background, input_urls. 3 parameters are shared by both.
Which is cheaper, Flux 3 Klein Text to Image or GPT Image 2.6 Economy Image to Image?: A sample run of Flux 3 Klein Text to Image costs From Rp130 / image, and GPT Image 2.6 Economy Image to Image costs Rp400 / image. Those are the cost of one sample run, not a flat rate: models billed per unit are recalculated from the duration or token count you ask for, and the estimated total is always shown before the task is created.
Can I use Flux 3 Klein Text to Image and GPT Image 2.6 Economy Image to Image from one account?: Yes. Both run from the same rupiah balance and are called the same way: POST https://getrun.id/v1/tasks with model "flux-3/klein-text-to-image" or "gpt-image-2-6/economy-image-to-image". No separate accounts, credit cards, or per-provider subscriptions — the balance is topped up through QRIS.

Other comparisons in this category

Compare other image models on Generate AI Images, Priced in Rupiah, see every comparison, or open the model catalog.