Stable Diffusion 3.5 Largevs.ChatGPT Image Latest (API-Alias)
Which one is better?
In our own test, ChatGPT Image Latest (API-Alias) leads. ChatGPT Image Latest (API-Alias) has no arena rating yet. Neither has an API price.
Test images
Same task, the first image of each. The task with the biggest difference is preselected.
Result for “Product photography”:ChatGPT Image Latest (API-Alias) ahead
What the rating looks at: Materials, reflections, and fine details.
“Ahead”: better in all three rating rounds. “Slightly ahead”: a higher value, but not in every round.
Test protocol of the images
Each test attempt uses the same archived prompt and one request. The first output of that attempt counts. Repeats after technical test failures are disclosed for the affected images. Files are normalized to 1,024 × 1,024 pixels without cropping. Provider resolution, randomness, quality tier and prompt processing can still differ. The images are a practical visual test, not a reconstruction of the arena configuration.
Character and detail
Stable Diffusion 3.5 Large: fal, requested 1024x1024, n=1, seed=7087247023770270000, estimated cost $0.068157, generated Aug 14, 2026, 2:37 PM. Source
ChatGPT Image Latest (API-Alias): openai, 1024x1024, quality high, n=1, generated Nov 2, 2026, 3:07 PM. Source
Protocol gradually-image-comparison-v1. Prompt SHA 256: 985a75b38642a9f0e5e0c0e0c67f1b7f67780d42bd2168fa24e9a7a7a94b0da6
Stable Diffusion 3.5 Large image SHA 256: e748006fe56e442ad347e3f994f18b86ee1739f20dcee063aa7a03ee710c5d54
ChatGPT Image Latest (API-Alias) image SHA 256: 138ee96636b4fae17774b98bc6253f8dab595f4763ab90dd069ac6883c3f392e
Infographic
Stable Diffusion 3.5 Large: fal, requested 1024x1024, n=1, seed=12166653711354006000, estimated cost $0.068157, generated Aug 14, 2026, 2:37 PM. Source
ChatGPT Image Latest (API-Alias): openai, 1024x1024, quality high, n=1, generated Nov 2, 2026, 3:07 PM. Source
Protocol gradually-image-comparison-v1. Prompt SHA 256: ed65cb4e6a51e2336f8b149ad4cbb16e020f07d527ad94362e719d2dcf91d94f
Stable Diffusion 3.5 Large image SHA 256: 4eb0fd741ef42e6d3fee4b1280cdfb098a0a04009b139051963895892e349f1e
ChatGPT Image Latest (API-Alias) image SHA 256: 3ed35c9539f9e2df404a219548c778a92ac0ee3e39a9a1c7f0bab3ee179165bb
Product photography
Stable Diffusion 3.5 Large: fal, requested 1024x1024, n=1, seed=13346308312015933000, estimated cost $0.068157, generated Aug 14, 2026, 2:37 PM. Source
ChatGPT Image Latest (API-Alias): openai, 1024x1024, quality high, n=1, generated Nov 2, 2026, 3:06 PM. Source
Protocol gradually-image-comparison-v1. Prompt SHA 256: c67fd71e91304458a2feef5c91efa8677260fab0c0099a29a2c52cb579f5b2f3
Stable Diffusion 3.5 Large image SHA 256: ea9a7401dee8859ec2cb96af9f7ca29a177ef2202f52f629d8ce9f5839bd4061
ChatGPT Image Latest (API-Alias) image SHA 256: c500c50a82c3c34b0caefcf73f08258fae3964682dafbee4737ac45855d14ee6
Typography and layout
Stable Diffusion 3.5 Large: fal, requested 1024x1024, n=1, seed=16632333557910893000, estimated cost $0.068157, generated Aug 14, 2026, 2:37 PM. Source
ChatGPT Image Latest (API-Alias): openai, 1024x1024, quality high, n=1, first output of one technical repeat after a local archive failure; two total submissions; the original attempt output was not retained, generated Nov 2, 2026, 3:06 PM. Source
Protocol gradually-image-comparison-v1. Prompt SHA 256: 2e012c3d14ee5dd02203a94f394ca80a5038cdebd6032b25a8b8a221f2255419
Stable Diffusion 3.5 Large image SHA 256: e2994b1883a245b1c8c447957d121ea89d93aafff149029aa4e8507dbb769f9a
ChatGPT Image Latest (API-Alias) image SHA 256: 503ffd644f74423e8fdf617a2d8984f43f68fd87e287e4a3a94cec89c9666288
The numbers at a glance
Stable Diffusion 3.5 Large
Rank 21 of 21
ChatGPT Image Latest (API-Alias)
not in the arena
Stable Diffusion 3.5 Large
Rank 87 of 108
ChatGPT Image Latest (API-Alias)
Rank 25 of 108
Stable Diffusion 3.5 Large
no API price
ChatGPT Image Latest (API-Alias)
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.
Stable Diffusion 3.5 Large
- Subscription
- n/a No plan in Germany names exactly this model.
- Via API
- No API price known. Access: API, local.
- License
- Open weights.
ChatGPT Image Latest (API-Alias)
- Subscription
- n/a No plan in Germany names exactly this model.
- Via API
- No API price known. Access: API.
- Weights
- unknown.
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 · 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 | Stable Diffusion 3.5 Large | ChatGPT Image Latest (API-Alias) |
|---|---|---|
| Ratings | ||
| Arena ratingfrom votes by users, higher is better | 938 | n/a |
| Arena rank | Rank 21 of 21 | n/a |
| Arena votesmore votes, a safer rating | 23,396 | n/a |
| GraduallyBenchour own rating, 0 to 100 | 27 | 69 |
| GraduallyBench by task | ||
| Typography and layoutLegible text, hierarchy, and composition | 31 | 68 |
| Product photographyMaterials, reflections, and fine details | 17 | 69 |
| Character and detailAnatomy, clothing, and spatial consistency | 23 | 57 |
| InfographicNumbers, labels, and visual organization | 39 | 83 |
| API price | ||
| Per imagelower is better | n/a | n/a |
| 100 images | n/a | n/a |
| Profile | ||
| Released | Oct 22, 2024 | n/a |
| Weightsopen means: runs locally | open | unknown |
| Lifecycle | no notice | Deprecated, non-reproducible rolling alias; API shutdown announced for December 1, 2026 |
| Access | API, local | API |
| Parameters | 8.1 billion | not published |
| Largest output | 1 Megapixel | not consistently published |
| Plans in Germanynaming exactly this model | n/a | n/a |
API prices for one image at 1,024 × 1,024 pixels according to Artificial Analysis.
Sources: Stable Diffusion 3.5 Large model source (verified Aug 15, 2026) · ChatGPT Image Latest (API-Alias) model source, status 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 Stable Diffusion 3.5 Large and ChatGPT Image Latest (API-Alias) from the same arena and category. Older model versions are not used as substitutes.
More comparisons
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