HiDream-O1-Imagevs.Stable Diffusion 3.5 Large

Which one is better?

In our own test both are on par. In the arena, HiDream-O1-Image leads. Both are in the lower half there, though. Stable Diffusion 3.5 Large has no API price.

Test images

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

HiDream-O1-Image: Character and detail, first image from the fixed test run — HiDream-O1-Image45 out of 100

Stable Diffusion 3.5 Large: Character and detail, first image from the fixed test run — Stable Diffusion 3.5 Large23 out of 100

Result for “Character and detail”:HiDream-O1-Image slightly ahead

Prompt given to both modelsCreate a square cinematic full-body portrait of a fictional bicycle courier waiting under a transparent umbrella at a rainy tram stop in Hamburg at blue hour. She wears a mustard raincoat, navy trousers, red sneakers, a silver helmet, and carries a teal messenger bag. Keep both hands visible, render the bicycle correctly, use realistic wet-street reflections, and include no readable brand names.

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

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

HiDream-O1-Image: fal, requested 1024x1024, n=1, seed=1735022440, estimated cost $0.010486, generated Aug 14, 2026, 1:53 PM. Source

Stable Diffusion 3.5 Large: fal, requested 1024x1024, n=1, seed=7087247023770270000, estimated cost $0.068157, generated Aug 14, 2026, 2:37 PM. Source

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

HiDream-O1-Image image SHA 256: 9ac2cbe23ee6a63b0daacd665a40c3471c52c52fd6ad23e46d3027bb95f8c880

Stable Diffusion 3.5 Large image SHA 256: e748006fe56e442ad347e3f994f18b86ee1739f20dcee063aa7a03ee710c5d54

Infographic

HiDream-O1-Image: fal, requested 1024x1024, n=1, seed=1456348218, estimated cost $0.010486, generated Aug 14, 2026, 1:53 PM. Source

Stable Diffusion 3.5 Large: fal, requested 1024x1024, n=1, seed=12166653711354006000, estimated cost $0.068157, generated Aug 14, 2026, 2:37 PM. Source

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

HiDream-O1-Image image SHA 256: 258eece8b53e4df0c990b78dee2e02ec57569b1c823c3feff2ab54671240d66f

Stable Diffusion 3.5 Large image SHA 256: 4eb0fd741ef42e6d3fee4b1280cdfb098a0a04009b139051963895892e349f1e

Product photography

HiDream-O1-Image: fal, requested 1024x1024, n=1, seed=124666889, estimated cost $0.010486, generated Aug 14, 2026, 1:53 PM. Source

Stable Diffusion 3.5 Large: fal, requested 1024x1024, n=1, seed=13346308312015933000, estimated cost $0.068157, generated Aug 14, 2026, 2:37 PM. Source

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

HiDream-O1-Image image SHA 256: 5a9cd3c59556412e4de93a3ef5c4121ec12b6cc02730cad527619c2d8a889783

Stable Diffusion 3.5 Large image SHA 256: ea9a7401dee8859ec2cb96af9f7ca29a177ef2202f52f629d8ce9f5839bd4061

Typography and layout

HiDream-O1-Image: fal, requested 1024x1024, n=1, seed=2131088503, estimated cost $0.010486, generated Aug 14, 2026, 2:41 PM. Source

Stable Diffusion 3.5 Large: fal, requested 1024x1024, n=1, seed=16632333557910893000, estimated cost $0.068157, generated Aug 14, 2026, 2:37 PM. Source

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

HiDream-O1-Image image SHA 256: 418a9b974b87b751ad2e4e98cdf6b8d7e2f8f352aed63d25be84c02377f310d1

Stable Diffusion 3.5 Large image SHA 256: e2994b1883a245b1c8c447957d121ea89d93aafff149029aa4e8507dbb769f9a

The numbers at a glance

Arena ratingfrom votes by users · higher is better

1,115

HiDream-O1-Image

Rank 19 of 21

938

Stable Diffusion 3.5 Large

Rank 21 of 21

GraduallyBenchour own rating, 0 to 100 · higher is better

HiDream-O1-Image

Rank 77 of 108

Stable Diffusion 3.5 Large

Rank 87 of 108

Price per imagedollars through the API · lower is better

$0.04

HiDream-O1-Image

fairly cheap

n/a

Stable Diffusion 3.5 Large

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.

HiDream-O1-Image

Subscription: n/a No plan in Germany names exactly this model.
Via API: $0.04 per image, 100 images $4.
License: Open weights.

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.

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 · 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.

Kennzahl	HiDream-O1-Image	Stable Diffusion 3.5 Large
Ratings
Arena ratingfrom votes by users, higher is better	1,115	938
Arena rank	Rank 19 of 21	Rank 21 of 21
Arena votesmore votes, a safer rating	79,970	23,396
GraduallyBenchour own rating, 0 to 100	34	27
GraduallyBench by task
Typography and layoutLegible text, hierarchy, and composition	18	31
Product photographyMaterials, reflections, and fine details	31	17
Character and detailAnatomy, clothing, and spatial consistency	45	23
InfographicNumbers, labels, and visual organization	43	39
API price
Per imagelower is better	$0.04	n/a
100 images	$4	n/a
Profile
Released	May 2026	Oct 22, 2024
Weightsopen means: runs locally	open	open
Access	API, local	API, local
Parameters	8 billion	8.1 billion
Largest output	2,048 × 2,048 pixels	1 Megapixel
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: HiDream-O1-Image model source (verified Aug 15, 2026) · Stable Diffusion 3.5 Large model source (verified Aug 15, 2026)

Arena ratings by category

From blind votes on LMArena. “Ahead” means the lead is clear.

Arena rating per categoryfrom votes by users · higher is betterHiDream-O1-ImageStable Diffusion 3.5 Large

Text to Image: 3D modeling1,121963ahead

Text to Image: Art1,117997ahead

Text to Image: Cartoon1,118945ahead

Text to Image: Commercial design1,130937ahead

Text to Image: Overall1,115938ahead

Text to Image: Photorealism1,109928ahead

Text to Image: Portraits1,105942ahead

Text to Image: Text rendering1,134921ahead

LMArena from Nov 6, 2026

All individual values with sources

Rating	HiDream-O1-Image	Stable Diffusion 3.5 Large	Source
Text to Image: 3D modeling	1,121	963	LMArenaRetrieved Nov 6, 2026
Text to Image: Art	1,117	997	LMArenaRetrieved Nov 6, 2026
Text to Image: Cartoon	1,118	945	LMArenaRetrieved Nov 6, 2026
Text to Image: Commercial design	1,130	937	LMArenaRetrieved Nov 6, 2026
Text to Image: Overall	1,115	938	LMArenaRetrieved Nov 6, 2026
Text to Image: Photorealism	1,109	928	LMArenaRetrieved Nov 6, 2026
Text to Image: Portraits	1,105	942	LMArenaRetrieved Nov 6, 2026
Text to Image: Text rendering	1,134	921	LMArenaRetrieved Nov 6, 2026

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Test images

The numbers at a glance

HiDream-O1-Image

Stable Diffusion 3.5 Large

All data side by side

Arena ratings by category

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