GPT Image 1.5vs.OmniGen2
Which one is better?
We have not tested OmniGen2 ourselves yet. OmniGen2 has no arena rating yet. OmniGen2 has no API price.
Same prompt, two images
Same task, the first image of each.
No image from the four fixed tasks for OmniGen2 yet.This model does not yet have a complete GraduallyBench run.
Result for “Typography and layout”:only GPT Image 1.5 tested
What the rating looks at: Legible text, hierarchy, and composition.
“Ahead”: better in all three rating rounds. “Slightly ahead”: a higher value, but not in every round.
Missing image run for OmniGen2
This model does not yet have a complete GraduallyBench run. Run the missing fixed tasks, archive the first output of each, and evaluate them blind.
DocumentationThe numbers at a glance
GPT Image 1.5
Rank 13 of 22
OmniGen2
not in the arena
GPT Image 1.5
Rank 43 of 74
OmniGen2
not tested yet
GPT Image 1.5
expensive
OmniGen2
no API price
Ranks among the 22 image models with an arena rating and the 74 with a GraduallyBench run; prices compared with 28 models with an API price.
GPT Image 1.5
- Subscription
- No OpenAI subscription includes this model. Through other providers from ≈ €6.39 a month (ElevenLabs Starter, with limited credits). 42 plans in Germany.
- Via API
- $0.13 per image, 100 images $13.30.
OmniGen2
- Subscription
- n/a No plan in Germany names exactly this model.
- Via API
- No API price known. Access: local, Web app.
- License
- Open weights.
Subscriptions only count plans that name exactly this model. Subscription prices include VAT, API prices are in dollars.
Arena rating (LMArena) from Oct 28, 2026 · GraduallyBench from Nov 1, 2026 · API prices from Oct 28, 2026 · Subscription database from Sep 29, 2026 (34 days old)
All data side by side
The better value is bold. For ratings only when the gap is clear.
| Kennzahl | GPT Image 1.5 | OmniGen2 |
|---|---|---|
| Ratings | ||
| Arena ratingfrom votes by users, higher is better | 1,236 | n/a |
| Arena rank | Rank 13 of 22 | n/a |
| Arena votesmore votes, a safer rating | 174,012 | n/a |
| GraduallyBenchour own rating, 0 to 100 | 54 | n/a |
| GraduallyBench by task | ||
| Typography and layoutLegible text, hierarchy, and composition | 58 | n/a |
| Product photographyMaterials, reflections, and fine details | 38 | n/a |
| Character and detailAnatomy, clothing, and spatial consistency | 64 | n/a |
| InfographicNumbers, labels, and visual organization | 56 | n/a |
| API price | ||
| Per imagelower is better | $0.13 | n/a |
| 100 images | $13.30 | n/a |
| Profile | ||
| Released | December 2025 | Jun 16, 2025 |
| Weightsopen means: runs locally | proprietary | open |
| Lifecycle | Marked as deprecated by OpenAI; removed from the API on December 1, 2026 | no notice |
| Access | API, Web app | local, Web app |
| Parameters | not published | not published |
| Largest output | 1,536 × 1,024 pixels | not consistently published |
| Plans in Germanynaming exactly this model | 42 | n/a |
API prices for one image at 1,024 × 1,024 pixels according to Artificial Analysis.
Sources: GPT Image 1.5 model source, status source (verified Aug 15, 2026) · OmniGen2 model source (verified Nov 1, 2026)
Arena ratings by category
From blind votes on LMArena. “Ahead” means the lead is clear.
No shared arena score in the stored snapshot
The stored benchmark database contains no measurement for GPT Image 1.5 and OmniGen2 from the same arena and category. Older model versions are not used as substitutes.
Compare another matchup
More matchups
Related image model comparisons
Compare GPT Image 1.5 and OmniGen2 with other important image models.