GPT Image 2.5 Sunburstvs.HART-0.7B-1024px
Which one is better?
We have not tested HART-0.7B-1024px ourselves yet. HART-0.7B-1024px has no arena rating yet. HART-0.7B-1024px has no API price.
Test images
Same task, the first image of each.
No image from the four fixed tasks for HART-0.7B-1024px yet.The reviewed vendor runner requires CUDA and custom CUDA kernels. No suitable MPS runtime has been verified for this Mac. The vendor-linked demo was unreachable on November 3, 2026 (HTTP 530), so no hosted test could be submitted there.
Result for “Typography and layout”:only GPT Image 2.5 Sunburst 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 HART-0.7B-1024px
The reviewed vendor runner requires CUDA and custom CUDA kernels. No suitable MPS runtime has been verified for this Mac. The vendor-linked demo was unreachable on November 3, 2026 (HTTP 530), so no hosted test could be submitted there. Check the official demo once restored or a supported CUDA runtime for the exact model version.
DocumentationThe numbers at a glance
GPT Image 2.5 Sunburst
Rank 1 of 21
HART-0.7B-1024px
not in the arena
GPT Image 2.5 Sunburst
Rank 8 of 108
HART-0.7B-1024px
not tested yet
GPT Image 2.5 Sunburst
expensive
HART-0.7B-1024px
no API price
Ranks among the 21 image models with an arena rating and the 108 with a GraduallyBench run; prices compared with 28 models with an API price.
GPT Image 2.5 Sunburst
- Subscription
- No OpenAI subscription includes this model. Through other providers from ≈ €6.36 a month (ElevenLabs Starter, with limited credits). 62 plans in Germany.
- Via API
- $0.21 per image, 100 images $21.07.
HART-0.7B-1024px
- Subscription
- n/a No plan in Germany names exactly this model.
- Via API
- No API price known. Access: local.
- 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 Nov 6, 2026 · GraduallyBench from Nov 3, 2026 · API prices from Nov 6, 2026 · Subscription database from Sep 29, 2026 (38 days old)
All data side by side
The better value is bold. For ratings only when the gap is clear.
| Kennzahl | GPT Image 2.5 Sunburst | HART-0.7B-1024px |
|---|---|---|
| Ratings | ||
| Arena ratingfrom votes by users, higher is better | 1,427 | n/a |
| Arena rank | Rank 1 of 21 | n/a |
| Arena votesmore votes, a safer rating | 54,913 | n/a |
| GraduallyBenchour own rating, 0 to 100 | 75 | n/a |
| GraduallyBench by task | ||
| Typography and layoutLegible text, hierarchy, and composition | 54 | n/a |
| Product photographyMaterials, reflections, and fine details | 87 | n/a |
| Character and detailAnatomy, clothing, and spatial consistency | 64 | n/a |
| InfographicNumbers, labels, and visual organization | 97 | n/a |
| API price | ||
| Per imagelower is better | $0.21 | n/a |
| 100 images | $21.07 | n/a |
| Profile | ||
| Released | Sep 8, 2026 | October 2024 |
| Weightsopen means: runs locally | proprietary | open |
| Access | API | local |
| Parameters | not published | 0.7 billion |
| Largest output | 3,840 × 2,160 pixels | 1,024 × 1,024 pixels |
| Plans in Germanynaming exactly this model | 62 | n/a |
API prices for one image at 1,024 × 1,024 pixels according to Artificial Analysis.
Sources: GPT Image 2.5 Sunburst model source (verified Sep 24, 2026) · HART-0.7B-1024px 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 2.5 Sunburst and HART-0.7B-1024px from the same arena and category. Older model versions are not used as substitutes.
More comparisons
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