HunyuanImage 3.0 Instructvs.Stable Diffusion 3.5 Medium

Which one is better?

In our own test, HunyuanImage 3.0 Instruct leads. Neither is in the arena. Neither has an API price.

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

HunyuanImage 3.0 Instruct: Product photography, first image from the fixed test run — HunyuanImage 3.0 Instruct80 out of 100

Stable Diffusion 3.5 Medium: Product photography, first image from the fixed test run — Stable Diffusion 3.5 Medium13 out of 100

Result for “Product photography”:HunyuanImage 3.0 Instruct 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

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

HunyuanImage 3.0 Instruct: fal, requested 1024x1024, n=1, seed=480451513, prompt expansion disabled, estimated cost $0.094372, generated Aug 14, 2026, 1:51 PM. Source

Stable Diffusion 3.5 Medium: fal, requested 1024x1024, n=1, seed=provider random, estimated cost $0.020000, generated Nov 1, 2026, 9:17 PM. Source

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

HunyuanImage 3.0 Instruct image SHA 256: 7c813735994e5781c420b23e15898e1d4c8b9a83b24dae9c72e9d7b08fe7ceb4

Stable Diffusion 3.5 Medium image SHA 256: 6b8aa732e94479ad302904096c5031908141e4083ee099f080185aa04c2ea800

Infographic

HunyuanImage 3.0 Instruct: fal, requested 1024x1024, n=1, seed=1316714523, prompt expansion disabled, estimated cost $0.094372, generated Aug 14, 2026, 1:52 PM. Source

Stable Diffusion 3.5 Medium: fal, requested 1024x1024, n=1, seed=provider random, estimated cost $0.020000, generated Nov 1, 2026, 9:17 PM. Source

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

HunyuanImage 3.0 Instruct image SHA 256: a9c50516fcbe8008d3d67c0651882f7c712aff66ee244b7f8aa7b83c0a67aaab

Stable Diffusion 3.5 Medium image SHA 256: 61b12e227431387098e51c6ce6d059be9d8df9c85263b994bee62602e2ddfd16

Product photography

HunyuanImage 3.0 Instruct: fal, requested 1024x1024, n=1, seed=1892985637, prompt expansion disabled, estimated cost $0.094372, generated Aug 14, 2026, 1:51 PM. Source

Stable Diffusion 3.5 Medium: fal, requested 1024x1024, n=1, seed=provider random, estimated cost $0.020000, generated Nov 1, 2026, 9:16 PM. Source

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

HunyuanImage 3.0 Instruct image SHA 256: 89ed8da585fcce3df9f76584dfc426a5142fe3b950c79a306a7ce3b79746ed99

Stable Diffusion 3.5 Medium image SHA 256: 2412a20e61c118ce7ab7ff83e285b96eb32d5c0f1171cc769e153db6655b8f67

Typography and layout

HunyuanImage 3.0 Instruct: fal, requested 1024x1024, n=1, seed=1326433162, prompt expansion disabled, estimated cost $0.094372, generated Aug 14, 2026, 2:41 PM. Source

Stable Diffusion 3.5 Medium: fal, requested 1024x1024, n=1, seed=provider random, estimated cost $0.020000, generated Nov 1, 2026, 9:16 PM. Source

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

HunyuanImage 3.0 Instruct image SHA 256: 4563cdd9bb047b4df3316484fcc4fe369ba6635f0360e434f45577d013468b6c

Stable Diffusion 3.5 Medium image SHA 256: bc854c3269ea8bada6f764545f4a09abedc110219018c09f2fa5708a14d9af7e

The numbers at a glance

Arena ratingfrom votes by users · higher is better

n/a

HunyuanImage 3.0 Instruct

not in the arena

n/a

Stable Diffusion 3.5 Medium

not in the arena

GraduallyBenchour own rating, 0 to 100 · higher is better

HunyuanImage 3.0 Instruct

Rank 18 of 74

Stable Diffusion 3.5 Medium

Rank 69 of 74

Price per imagedollars through the API · lower is better

n/a

HunyuanImage 3.0 Instruct

no API price

n/a

Stable Diffusion 3.5 Medium

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.

HunyuanImage 3.0 Instruct

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

Stable Diffusion 3.5 Medium

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 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	HunyuanImage 3.0 Instruct	Stable Diffusion 3.5 Medium
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	64	16
GraduallyBench by task
Typography and layoutLegible text, hierarchy, and composition	82	17
Product photographyMaterials, reflections, and fine details	80	13
Character and detailAnatomy, clothing, and spatial consistency	43	16
InfographicNumbers, labels, and visual organization	51	20
API price
Per imagelower is better	n/a	n/a
100 images	n/a	n/a
Profile
Released	January 2026	Oct 29, 2024
Weightsopen means: runs locally	open	open
Access	API, local	API, local
Parameters	80 billion	2.5 billion
Largest output	not consistently published	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: HunyuanImage 3.0 Instruct model source (verified Aug 15, 2026) · Stable Diffusion 3.5 Medium 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 HunyuanImage 3.0 Instruct and Stable Diffusion 3.5 Medium from the same arena and category. Older model versions are not used as substitutes.

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More matchups

Compare HunyuanImage 3.0 Instruct and Stable Diffusion 3.5 Medium with other important image models.

View the complete image model comparison

Same prompt, two images

The numbers at a glance

HunyuanImage 3.0 Instruct

Stable Diffusion 3.5 Medium

All data side by side

Arena ratings by category

No shared arena score in the stored snapshot

Compare another matchup

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