Qwen Image 2.1 Provs.Stable Diffusion 3.5 Large Turbo

Which one is better?

In our own test, Qwen Image 2.1 Pro leads. Neither is in the arena. Neither has an API price.

Test images

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

Qwen Image 2.1 Pro: Product photography, first image from the fixed test run — Qwen Image 2.1 Pro83 out of 100

Stable Diffusion 3.5 Large Turbo: Product photography, first image from the fixed test run — Stable Diffusion 3.5 Large Turbo15 out of 100

Result for “Product photography”:Qwen Image 2.1 Pro 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

Qwen Image 2.1 Pro: openrouter, aspect ratio 1:1, resolution 1K, n=1, seed=provider random, actual cost $0.046000, generated Nov 1, 2026, 8:37 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

Qwen Image 2.1 Pro image SHA 256: 5cc1b66564896a15198281314423f63a70fd897c4542588230dfe0e946beb76c

Stable Diffusion 3.5 Large Turbo image SHA 256: 312460ab73a4a22292bf6fbce099d86a22b0b8418f1516351f12f181b5574c76

Infographic

Qwen Image 2.1 Pro: openrouter, aspect ratio 1:1, resolution 1K, n=1, seed=provider random, actual cost $0.046000, generated Nov 1, 2026, 8:37 PM. Source

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

Qwen Image 2.1 Pro image SHA 256: f1eee1f8f0d3355879d5c91b7ae006a95b0511a37f7382b8f6241cb22b3959a0

Stable Diffusion 3.5 Large Turbo image SHA 256: 16be803360e5a8025715fd221a0a623d1d68dc1ef38063d12c5abc1298e68d69

Product photography

Qwen Image 2.1 Pro: openrouter, aspect ratio 1:1, resolution 1K, n=1, seed=provider random, actual cost $0.046000, generated Nov 1, 2026, 8:36 PM. Source

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

Qwen Image 2.1 Pro image SHA 256: 08d93301c324d132b3f5df149f95d57d725c068e6f15b193521f1eb253a1f176

Stable Diffusion 3.5 Large Turbo image SHA 256: 1d9665660c7b05a58edc1b68c7f9d773ec4fbcaa41f15d3d691df764d5314b82

Typography and layout

Qwen Image 2.1 Pro: openrouter, aspect ratio 1:1, resolution 1K, n=1, seed=provider random, actual cost $0.046000, generated Nov 1, 2026, 8:36 PM. Source

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

Qwen Image 2.1 Pro image SHA 256: 31be32c6b34f27d2ff60eae3979c211ba8c2e0296595ec13e62f6f249c967058

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

Qwen Image 2.1 Pro

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

Qwen Image 2.1 Pro

Rank 49 of 108

Stable Diffusion 3.5 Large Turbo

Rank 88 of 108

Price per imagedollars through the API · lower is better

n/a

Qwen Image 2.1 Pro

no API price

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.

Qwen Image 2.1 Pro

Subscription: n/a No plan in Germany names exactly this model.
Via API: No API price known. Access: API.
Weights: unknown.

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 · 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	Qwen Image 2.1 Pro	Stable Diffusion 3.5 Large Turbo
Ratings
Arena ratingfrom votes by users, higher is better	n/a	n/a
Arena rank	n/a	n/a
Arena votesmore votes, a safer rating	n/a	n/a
GraduallyBenchour own rating, 0 to 100	62	27
GraduallyBench by task
Typography and layoutLegible text, hierarchy, and composition	38	26
Product photographyMaterials, reflections, and fine details	83	15
Character and detailAnatomy, clothing, and spatial consistency	65	51
InfographicNumbers, labels, and visual organization	62	17
API price
Per imagelower is better	n/a	n/a
100 images	n/a	n/a
Profile
Released	n/a	Oct 22, 2024
Weightsopen means: runs locally	unknown	open
Access	API	API, local
Parameters	not published	not published
Largest output	2K	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: Qwen Image 2.1 Pro model source (verified Nov 1, 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 Qwen Image 2.1 Pro 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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