Stable Diffusion 3.5 Largevs.Adobe Firefly Image 4 Ultra
Which one is better?
In our own test both are on par. Adobe Firefly Image 4 Ultra has no arena rating yet. Neither has an API price.
Same prompt, two images
Same task, the first image of each. The task with the biggest difference is preselected.
Result for “Character and detail”:Adobe Firefly Image 4 Ultra slightly ahead
What the rating looks at: Anatomy, clothing, and spatial consistency.
“Ahead”: better in all three rating rounds. “Slightly ahead”: a higher value, but not in every round.
Test protocol of the images
Both models receive the same archived prompt in exactly one request, and the first result counts. 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
Adobe Firefly Image 4 Ultra: manual, 1:1, one request, first output, one output observed, exact UI model Firefly Image 4 Ultra, provider-default random seed, native 2K square output, no reference images, no selected effects, default content settings, source UI file Firefly_Create a square cinematic full-body portrait of a fictional bicycle courier waiting u 33523.jpg, source 2048x2048, stored 1024x1024 (Lanczos3 downscale), generated Nov 1, 2026, 9:42 PM. Source
Protocol gradually-image-comparison-v1. Prompt SHA 256: 985a75b38642a9f0e5e0c0e0c67f1b7f67780d42bd2168fa24e9a7a7a94b0da6
Stable Diffusion 3.5 Large image SHA 256: e748006fe56e442ad347e3f994f18b86ee1739f20dcee063aa7a03ee710c5d54
Adobe Firefly Image 4 Ultra image SHA 256: 6a981030438be43a369ba8440c0dbbe43576a83dadc4e61a48a3dce0abc1e69c
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
Adobe Firefly Image 4 Ultra: manual, 1:1, one request, first output, one output observed, exact UI model Firefly Image 4 Ultra, provider-default random seed, native 2K square output, no reference images, no selected effects, default content settings, source UI file Firefly_Create a square German infographic titled SO FUNKTIONIERT PHOTOSYNTHESE. Show exactly 33523.jpg, source 2048x2048, stored 1024x1024 (Lanczos3 downscale), generated Nov 1, 2026, 9:42 PM. Source
Protocol gradually-image-comparison-v1. Prompt SHA 256: ed65cb4e6a51e2336f8b149ad4cbb16e020f07d527ad94362e719d2dcf91d94f
Stable Diffusion 3.5 Large image SHA 256: 4eb0fd741ef42e6d3fee4b1280cdfb098a0a04009b139051963895892e349f1e
Adobe Firefly Image 4 Ultra image SHA 256: 7a306acea26f85b98aaebf8e79efa9c878a68ae84617f7c3cf47339980ecbca8
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
Adobe Firefly Image 4 Ultra: manual, 1:1, one request, first output, one output observed, exact UI model Firefly Image 4 Ultra, provider-default random seed, native 2K square output, no reference images, no selected effects, default content settings, source UI file Firefly_Create a square premium product photograph of a brushed titanium wristwatch standing 33523.jpg, source 2048x2048, stored 1024x1024 (Lanczos3 downscale), generated Nov 1, 2026, 9:42 PM. Source
Protocol gradually-image-comparison-v1. Prompt SHA 256: c67fd71e91304458a2feef5c91efa8677260fab0c0099a29a2c52cb579f5b2f3
Stable Diffusion 3.5 Large image SHA 256: ea9a7401dee8859ec2cb96af9f7ca29a177ef2202f52f629d8ce9f5839bd4061
Adobe Firefly Image 4 Ultra image SHA 256: 888b218766947c6a7f58e163f0f42dc660bd1110b7bf9bbb536881e486d8282c
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
Adobe Firefly Image 4 Ultra: manual, 1:1, one request, first output, one output observed, exact UI model Firefly Image 4 Ultra, provider-default random seed, native 2K square output, no reference images, no selected effects, default content settings, source UI file Firefly_Create a square editorial poster for an imaginary night train called MONDFALTER. Show 33523.jpg, source 2048x2048, stored 1024x1024 (Lanczos3 downscale), generated Nov 1, 2026, 9:42 PM. Source
Protocol gradually-image-comparison-v1. Prompt SHA 256: 2e012c3d14ee5dd02203a94f394ca80a5038cdebd6032b25a8b8a221f2255419
Stable Diffusion 3.5 Large image SHA 256: e2994b1883a245b1c8c447957d121ea89d93aafff149029aa4e8507dbb769f9a
Adobe Firefly Image 4 Ultra image SHA 256: 8c05d93d71bf08caa02caa5b00463be262ab395ec2350ec26944460e34c0d98f
The numbers at a glance
Stable Diffusion 3.5 Large
Rank 22 of 22
Adobe Firefly Image 4 Ultra
not in the arena
Stable Diffusion 3.5 Large
Rank 67 of 74
Adobe Firefly Image 4 Ultra
Rank 69 of 74
Stable Diffusion 3.5 Large
no API price
Adobe Firefly Image 4 Ultra
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.
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.
Adobe Firefly Image 4 Ultra
- Subscription
- n/a No plan in Germany names exactly this model.
- Via API
- No API price known. Access: Web app.
- Weights
- unknown.
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 · 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 | Stable Diffusion 3.5 Large | Adobe Firefly Image 4 Ultra |
|---|---|---|
| Ratings | ||
| Arena ratingfrom votes by users, higher is better | 938 | n/a |
| Arena rank | Rank 22 of 22 | n/a |
| Arena votesmore votes, a safer rating | 23,396 | n/a |
| GraduallyBenchour own rating, 0 to 100 | 18 | 16 |
| GraduallyBench by task | ||
| Typography and layoutLegible text, hierarchy, and composition | 11 | 9 |
| Product photographyMaterials, reflections, and fine details | 14 | 6 |
| Character and detailAnatomy, clothing, and spatial consistency | 23 | 43 |
| InfographicNumbers, labels, and visual organization | 23 | 8 |
| API price | ||
| Per imagelower is better | n/a | n/a |
| 100 images | n/a | n/a |
| Profile | ||
| Released | Oct 22, 2024 | Apr 24, 2025 |
| Weightsopen means: runs locally | open | unknown |
| Access | API, local | Web app |
| 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) · Adobe Firefly Image 4 Ultra 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 Stable Diffusion 3.5 Large and Adobe Firefly Image 4 Ultra from the same arena and category. Older model versions are not used as substitutes.
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