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Stable Diffusion 3.5 Largevs.Nucleus-Image

Which one is better?

In our own test both are on par. Nucleus-Image 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.

Stable Diffusion 3.5 Large: Product photography, first image from the fixed test run
Stable Diffusion 3.5 Large17 out of 100
Nucleus-Image: Product photography, first image from the fixed test run
Nucleus-Image62 out of 100

Result for “Product photography”:Nucleus-Image ahead

Prompt given to both modelsCreate a square premium product photograph of a brushed titanium wristwatch standing upright on dark green marble. The watch has a cream dial, thin black hands set to 10:10, twelve distinct hour markers, a realistic crown, and a dark brown leather strap. Soft window light from the left, controlled reflections, shallow depth of field, no text, no logo, no extra objects.

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

Nucleus-Image: fal, aspect ratio 1:1; Fal has no output-size input, n=1, seed=748477400, Upstream checkpoint documents 1024x1024; estimate reserves 2 MP at Fal's $0.01 per MP rate, estimated cost $0.020000, generated Nov 2, 2026, 3:03 PM. Source

Protocol gradually-image-comparison-v1. Prompt SHA 256: 985a75b38642a9f0e5e0c0e0c67f1b7f67780d42bd2168fa24e9a7a7a94b0da6

Stable Diffusion 3.5 Large image SHA 256: e748006fe56e442ad347e3f994f18b86ee1739f20dcee063aa7a03ee710c5d54

Nucleus-Image image SHA 256: c931159b5d8670025e00457995bc1bf8aa51176bc54271267abbd67808689aae

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

Nucleus-Image: fal, aspect ratio 1:1; Fal has no output-size input, n=1, seed=956072606, Upstream checkpoint documents 1024x1024; estimate reserves 2 MP at Fal's $0.01 per MP rate, estimated cost $0.020000, generated Nov 2, 2026, 3:03 PM. Source

Protocol gradually-image-comparison-v1. Prompt SHA 256: ed65cb4e6a51e2336f8b149ad4cbb16e020f07d527ad94362e719d2dcf91d94f

Stable Diffusion 3.5 Large image SHA 256: 4eb0fd741ef42e6d3fee4b1280cdfb098a0a04009b139051963895892e349f1e

Nucleus-Image image SHA 256: 826d0bab35098adaae1c5a663d88713b7a8faa277a3ded16c1047beda0f169bf

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

Nucleus-Image: fal, aspect ratio 1:1; Fal has no output-size input, n=1, seed=1580273337, Upstream checkpoint documents 1024x1024; estimate reserves 2 MP at Fal's $0.01 per MP rate, estimated cost $0.020000, generated Nov 2, 2026, 3:03 PM. Source

Protocol gradually-image-comparison-v1. Prompt SHA 256: c67fd71e91304458a2feef5c91efa8677260fab0c0099a29a2c52cb579f5b2f3

Stable Diffusion 3.5 Large image SHA 256: ea9a7401dee8859ec2cb96af9f7ca29a177ef2202f52f629d8ce9f5839bd4061

Nucleus-Image image SHA 256: f8ce2bbfd219cc3ee98d1579426cbae88d0f43880a445301396ab04b5bf2f458

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

Nucleus-Image: fal, aspect ratio 1:1; Fal has no output-size input, n=1, seed=689548231, Upstream checkpoint documents 1024x1024; estimate reserves 2 MP at Fal's $0.01 per MP rate, estimated cost $0.020000, generated Nov 2, 2026, 3:03 PM. Source

Protocol gradually-image-comparison-v1. Prompt SHA 256: 2e012c3d14ee5dd02203a94f394ca80a5038cdebd6032b25a8b8a221f2255419

Stable Diffusion 3.5 Large image SHA 256: e2994b1883a245b1c8c447957d121ea89d93aafff149029aa4e8507dbb769f9a

Nucleus-Image image SHA 256: a92e94eadcf94b661a14dc4308c6f94ca177223fca9965006dc571f5d95bacda

The numbers at a glance

Arena ratingfrom votes by users · higher is better
938

Stable Diffusion 3.5 Large

Rank 21 of 21

n/a

Nucleus-Image

not in the arena

GraduallyBenchour own rating, 0 to 100 · higher is better
27

Stable Diffusion 3.5 Large

Rank 87 of 108

48

Nucleus-Image

Rank 65 of 108

Price per imagedollars through the API · lower is better
n/a

Stable Diffusion 3.5 Large

no API price

n/a

Nucleus-Image

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.

Nucleus-Image

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 · 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.

KennzahlStable Diffusion 3.5 LargeNucleus-Image
Ratings
Arena ratingfrom votes by users, higher is better938n/a
Arena rankRank 21 of 21n/a
Arena votesmore votes, a safer rating23,396n/a
GraduallyBenchour own rating, 0 to 1002748
GraduallyBench by task
Typography and layoutLegible text, hierarchy, and composition3138
Product photographyMaterials, reflections, and fine details1762
Character and detailAnatomy, clothing, and spatial consistency2366
InfographicNumbers, labels, and visual organization3923
API price
Per imagelower is bettern/an/a
100 imagesn/an/a
Profile
ReleasedOct 22, 2024n/a
Weightsopen means: runs locallyopenopen
AccessAPI, locallocal
Parameters8.1 billion17 billion
Largest output1 Megapixelnot consistently published
Plans in Germanynaming exactly this modeln/an/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) · Nucleus-Image 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 Nucleus-Image from the same arena and category. Older model versions are not used as substitutes.

More comparisons

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