Flux Pro Ultra — AI image generator

Up to four megapixels — the largest, most detailed Flux render.

Flux Pro Ultra is the high-resolution tier of the flagship, generating up to roughly four megapixels natively. That distinction matters: detail that is generated at size is real detail, whereas an upscaled 1K image is a smaller image with invented pixels between the original ones.

Reach for it when the output has a physical destination — a print, a large display, a canvas someone will stand close to — or when a client will crop into it and the crop still has to hold up.

What Flux Pro Ultra is good for

Worth knowing before you spend credits

It has no resolution selector — the tier is the resolution — and it is the dearest Flux option. At screen size you will not see what you paid for.

Flux Pro Ultra specifications

Price504 credits — about 46c
TypeImage
Providerfal
Aspect ratios (13)1:1, 4:3, 16:9, 3:2, 19.5:9, 20:9, 2:1, 3:4, 9:16, 2:3, 9:19.5, 9:20, 1:2

Credit prices are the live studio rates. Cash equivalents are approximate at starter-pack rates and improve on the larger packs — see pricing.

Questions

What is the highest resolution AI image generator here?
Flux Pro Ultra generates up to about four megapixels natively. Seedream v4 reaches a larger single dimension, up to 4,096 pixels on a side.

Compare with other image models

Every AI model on comfyarts — image models, prices and measured capabilities side by side.