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Grok Imagine Image Qualityvs.Stable Diffusion 3.5 Large Turbo

Which one is better?

In our own test, Grok Imagine Image Quality leads. Neither is in the arena. Stable Diffusion 3.5 Large Turbo has no API price.

Test images

Same task, the first image of each. The task with the biggest difference is preselected.

Grok Imagine Image Quality: Typography and layout, first image from the fixed test run
Grok Imagine Image Quality88 out of 100
Stable Diffusion 3.5 Large Turbo: Typography and layout, first image from the fixed test run
Stable Diffusion 3.5 Large Turbo26 out of 100

Result for “Typography and layout”:Grok Imagine Image Quality ahead

Prompt given to both modelsCreate a square editorial poster for an imaginary night train called MONDFALTER. Show the exact German headline MONDFALTER and the exact subline BERLIN NACH LISSABON. Use a restrained midnight-blue and warm-cream palette, one stylized moth, strong Swiss-grid typography, generous negative space, and no additional words or logos.

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.

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

Grok Imagine Image Quality: openrouter, aspect ratio 1:1, resolution 1K, n=1, seed=provider random, actual cost $0.050000, generated Aug 14, 2026, 1:34 PM. Source

Stable Diffusion 3.5 Large Turbo: fal, image_size=square_hd, num_inference_steps=4, guidance_scale=0, n=1, seed=provider random, Estimate reserves 2 MP at Fal's $0.015 per MP rate, estimated cost $0.030000, generated Nov 2, 2026, 3:28 PM. Source

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

Grok Imagine Image Quality image SHA 256: b6cccae7af9a70af45a46b9e3264fa6971101e04979f7a0539e889ba6521250a

Stable Diffusion 3.5 Large Turbo image SHA 256: 312460ab73a4a22292bf6fbce099d86a22b0b8418f1516351f12f181b5574c76

Infographic

Grok Imagine Image Quality: openrouter, aspect ratio 1:1, resolution 1K, n=1, seed=provider random, actual cost $0.050000, generated Aug 14, 2026, 1:34 PM. Source

Stable Diffusion 3.5 Large Turbo: fal, image_size=square_hd, num_inference_steps=4, guidance_scale=0, n=1, seed=provider random, Estimate reserves 2 MP at Fal's $0.015 per MP rate, estimated cost $0.030000, generated Nov 2, 2026, 3:28 PM. Source

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

Grok Imagine Image Quality image SHA 256: 03fbeae7859be72584048dfc23fba0651220ab44c707da66c386b77d90cc86f7

Stable Diffusion 3.5 Large Turbo image SHA 256: 16be803360e5a8025715fd221a0a623d1d68dc1ef38063d12c5abc1298e68d69

Product photography

Grok Imagine Image Quality: openrouter, aspect ratio 1:1, resolution 1K, n=1, seed=provider random, actual cost $0.050000, generated Aug 14, 2026, 1:34 PM. Source

Stable Diffusion 3.5 Large Turbo: fal, image_size=square_hd, num_inference_steps=4, guidance_scale=0, n=1, seed=provider random, Estimate reserves 2 MP at Fal's $0.015 per MP rate, estimated cost $0.030000, generated Nov 2, 2026, 3:28 PM. Source

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

Grok Imagine Image Quality image SHA 256: 0ea1e48f20bf61ff10414398b5248b0496c9040b3868c915580efd11d0dbaf11

Stable Diffusion 3.5 Large Turbo image SHA 256: 1d9665660c7b05a58edc1b68c7f9d773ec4fbcaa41f15d3d691df764d5314b82

Typography and layout

Grok Imagine Image Quality: openrouter, aspect ratio 1:1, resolution 1K, n=1, seed=provider random, actual cost $0.050000, generated Aug 14, 2026, 2:05 PM. Source

Stable Diffusion 3.5 Large Turbo: fal, image_size=square_hd, num_inference_steps=4, guidance_scale=0, n=1, seed=provider random, Estimate reserves 2 MP at Fal's $0.015 per MP rate, estimated cost $0.030000, generated Nov 2, 2026, 3:28 PM. Source

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

Grok Imagine Image Quality image SHA 256: 84d88fb03bdbba672fc91268f4c120b17a19e4c9d637425aeca8ed44b2397d9f

Stable Diffusion 3.5 Large Turbo image SHA 256: e50fd19573ee42b2d6419b51f45bf29e04931ae1b583868d340fc05d973975ea

The numbers at a glance

Arena ratingfrom votes by users · higher is better
n/a

Grok Imagine Image Quality

not in the arena

n/a

Stable Diffusion 3.5 Large Turbo

not in the arena

GraduallyBenchour own rating, 0 to 100 · higher is better
60

Grok Imagine Image Quality

Rank 54 of 108

27

Stable Diffusion 3.5 Large Turbo

Rank 88 of 108

Price per imagedollars through the API · lower is better
$0.05

Grok Imagine Image Quality

fairly cheap

n/a

Stable Diffusion 3.5 Large Turbo

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.

Grok Imagine Image Quality

Subscription
n/a No plan in Germany names exactly this model.
Via API
$0.05 per image, 100 images $5.

Stable Diffusion 3.5 Large Turbo

Subscription
n/a No plan in Germany names exactly this model.
Via API
No API price known. Access: API, local.
License
Open weights.

Subscriptions only count plans that name exactly this model. Subscription prices include VAT, API prices are in dollars.

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.

KennzahlGrok Imagine Image QualityStable Diffusion 3.5 Large Turbo
Ratings
Arena ratingfrom votes by users, higher is bettern/an/a
Arena rankn/an/a
Arena votesmore votes, a safer ratingn/an/a
GraduallyBenchour own rating, 0 to 1006027
GraduallyBench by task
Typography and layoutLegible text, hierarchy, and composition8826
Product photographyMaterials, reflections, and fine details3715
Character and detailAnatomy, clothing, and spatial consistency5651
InfographicNumbers, labels, and visual organization6117
API price
Per imagelower is better$0.05n/a
100 images$5n/a
Profile
ReleasedApril 2026Oct 22, 2024
Weightsopen means: runs locallyproprietaryopen
LifecycleDeprecated: xAI retires the model slug on November 2, 2026; requests are then served by grok-imagine-image-2.0 (quality=low)no notice
AccessAPI, Web appAPI, local
Parametersnot publishednot published
Largest output2Knot 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: Grok Imagine Image Quality model source, status source (verified Aug 15, 2026) · Stable Diffusion 3.5 Large Turbo 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 Grok Imagine Image Quality and Stable Diffusion 3.5 Large Turbo from the same arena and category. Older model versions are not used as substitutes.

More comparisons

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