Image model vs image model
GPT Image 1.5 vs HiDream-O1-Image
People picked GPT Image 1.5’s picture over HiDream-O1-Image’s about 70% of the time in blind votes. HiDream-O1-Image costs 22× less (≈$0.22 against $0.01 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
GPT Image 1.5 HiDream-O1-Image
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 GPT Image 1.5. Models the arena hasn’t rated yet sit in the grey lane at the bottom.
Which one to pick
Pick GPT Image 1.5 if
- you want the better picture: in blind votes people chose its image over HiDream-O1-Image’s about 70% of the time
- you need to edit pictures you upload; HiDream-O1-Image only makes new ones here
Pick HiDream-O1-Image if
- price matters: 100 images cost $1.00, against $22.45 with GPT Image 1.5
- you want open weights you can run yourself
The specs
| Spec | GPT Image 1.5 | HiDream-O1-Image |
|---|---|---|
| Price per image | ≈$0.22 (estimated, high quality) | $0.01 |
| 100 images | $22.45 | $1.00 |
| Text-to-image Elo | 1123 ±11 (#9 in the arena) | 975 ±10 (#63 in the arena) |
| Editing Elo | 1119 ±13 (#15 in the arena) | Not scored yet |
| Arena votes | 12,830 | 10,662 |
| Edits uploaded pictures | Yes | No |
| Largest size | — | — |
| Open weights | No | Yes |
| Zero data retention | No | — |
| Lab | OpenAI | HiDream |
| Official name | GPT Image 1.5 | HiDream-O1-Image |
| Released | November 2025 | May 2026 |
Elo ± is the 95% margin. Prices are for one 1024×1024 image from the Vercel AI Gateway and fal.ai.
Questions
Which is better, GPT Image 1.5 or HiDream-O1-Image?
People picked GPT Image 1.5’s picture over HiDream-O1-Image’s about 70% of the time in blind votes. HiDream-O1-Image costs 22× less (≈$0.22 against $0.01 an image), so it wins when “good enough” will do.
Which is cheaper, GPT Image 1.5 or HiDream-O1-Image?
HiDream-O1-Image: $0.01 for a 1024×1024 image, against ≈$0.22 for GPT Image 1.5. 100 images cost $1.00 and $22.45. GPT Image 1.5 is billed per token, so its price is an estimate at high quality.
Can GPT Image 1.5 and HiDream-O1-Image edit images?
GPT Image 1.5 can change a picture you upload. HiDream-O1-Image only makes new pictures from a prompt here.
How can I compare GPT Image 1.5 and HiDream-O1-Image 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.