Image model vs image model
FLUX.2 Klein 4B vs Z-Image Turbo
People picked Z-Image Turbo’s picture over FLUX.2 Klein 4B’s about 64% of the time in blind votes, and they cost about the same ($0.005 against $0.005 an image).
At a glance
Longer bar means the bigger number. Elo bars start at 800.
Blind votes · how often people would pick each picture
FLUX.2 Klein 4B Z-Image Turbo
Text to image · arena Elo, higher is better
Where they sit among all 56 image models
Up and to the left is better pictures for less money. Hover or tap a dot for its numbers, then click it to compare that model with FLUX.2 Klein 4B. Models the arena hasn’t rated yet sit in the grey lane at the bottom.
Which one to pick
Pick FLUX.2 Klein 4B if
- you need to edit pictures you upload; Z-Image Turbo only makes new ones here
Pick Z-Image Turbo if
- you want the better picture: in blind votes people chose its image over FLUX.2 Klein 4B’s about 64% of the time
The specs
| Spec | FLUX.2 Klein 4B | Z-Image Turbo |
|---|---|---|
| Price per image | $0.005 ($0.02 per edit) | $0.005 |
| 100 images | $0.50 | $0.50 |
| Text-to-image Elo | 837 ±12 (#96 in the arena) | 936 ±11 (#72 in the arena) |
| Editing Elo | 938 ±17 (#62 in the arena) | Not scored yet |
| Arena votes | 6,418 | 8,170 |
| Edits uploaded pictures | Yes | No |
| Largest size | — | — |
| Open weights | Yes | Yes |
| Zero data retention | — | — |
| Lab | Black Forest Labs | Alibaba |
| Official name | FLUX.2 [klein] 4B | Z-Image Turbo |
| Released | January 2026 | November 2025 |
Elo ± is the 95% margin. Prices are for one 1024×1024 image from fal.ai.
Questions
Which is better, FLUX.2 Klein 4B or Z-Image Turbo?
People picked Z-Image Turbo’s picture over FLUX.2 Klein 4B’s about 64% of the time in blind votes, and they cost about the same ($0.005 against $0.005 an image).
Which is cheaper, FLUX.2 Klein 4B or Z-Image Turbo?
They cost about the same: FLUX.2 Klein 4B $0.005 and Z-Image Turbo $0.005 for a 1024×1024 image.
Can FLUX.2 Klein 4B and Z-Image Turbo edit images?
FLUX.2 Klein 4B can change a picture you upload. Z-Image Turbo only makes new pictures from a prompt here.
How can I compare FLUX.2 Klein 4B and Z-Image Turbo myself?
Open the comparison, type one prompt and both models draw it side by side, each with what it cost and how long it took. You sign up with Google before your first run, and new accounts start with free credit.
Related comparisons
Where the numbers come from
Quality scores are Elo ratings from the Artificial Analysis image arenas, where people vote between two pictures made from the same prompt without knowing which model made which. The vote split comes from the Elo gap. Prices are for one 1024×1024 image from fal.ai; models billed per token are estimated at the quality the arena scored. The sample pictures are our own runs. Updated October 25, 2026.