Image model vs image model
FLUX1.1 [pro] Ultra vs SRPO
People picked FLUX1.1 [pro] Ultra’s picture over SRPO’s about 54% of the time in blind votes. SRPO costs 2.4× less ($0.06 against $0.025 an image), so it wins when “good enough” will do.
At a glance
Longer bar means the bigger number. Elo bars start at 800.
Blind votes · how often people would pick each picture
FLUX1.1 [pro] Ultra SRPO
Price per image · 1024×1024, lower is better
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 FLUX1.1 [pro] Ultra. Models the arena hasn’t rated yet sit in the grey lane at the bottom.
Which one to pick
Pick FLUX1.1 [pro] Ultra if
- you want the better picture: in blind votes people chose its image over SRPO’s about 54% of the time
Pick SRPO if
- price matters: 100 images cost $2.50, against $6.00 with FLUX1.1 [pro] Ultra
- you want open weights you can run yourself
The specs
| Spec | FLUX1.1 [pro] Ultra | SRPO |
|---|---|---|
| Price per image | $0.06 | $0.025 |
| 100 images | $6.00 | $2.50 |
| Text-to-image Elo | 855 ±19 (#93 in the arena) | 826 ±20 (#99 in the arena) |
| Editing Elo | Not scored yet | Not scored yet |
| Arena votes | 2,284 | 2,154 |
| Edits uploaded pictures | No | No |
| Largest size | — | — |
| Open weights | No | Yes |
| Zero data retention | No | — |
| Lab | Black Forest Labs | Tencent |
| Official name | FLUX1.1 [pro] Ultra | SRPO |
| Released | November 2024 | September 2025 |
Elo ± is the 95% margin. Prices are for one 1024×1024 image from the Vercel AI Gateway and fal.ai.
Questions
Which is better, FLUX1.1 [pro] Ultra or SRPO?
People picked FLUX1.1 [pro] Ultra’s picture over SRPO’s about 54% of the time in blind votes. SRPO costs 2.4× less ($0.06 against $0.025 an image), so it wins when “good enough” will do.
Which is cheaper, FLUX1.1 [pro] Ultra or SRPO?
SRPO: $0.025 for a 1024×1024 image, against $0.06 for FLUX1.1 [pro] Ultra. 100 images cost $2.50 and $6.00.
Can FLUX1.1 [pro] Ultra and SRPO edit images?
Not on ModelCompare: both only make new pictures from a prompt here.
How can I compare FLUX1.1 [pro] Ultra and SRPO 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 the Vercel AI Gateway and 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.