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Bria FIBO 2vs.Stable Diffusion 3.5 Medium

Which one is better?

In our own test, Bria FIBO 2 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.

Bria FIBO 2: Infographic, first image from the fixed test run
Bria FIBO 278 out of 100
Stable Diffusion 3.5 Medium: Infographic, first image from the fixed test run
Stable Diffusion 3.5 Medium20 out of 100

Result for “Infographic”:Bria FIBO 2 ahead

Prompt given to both modelsCreate a square German infographic titled SO FUNKTIONIERT PHOTOSYNTHESE. Show exactly four numbered steps in this order: 1 LICHT, 2 WASSER, 3 CO₂, 4 ZUCKER + SAUERSTOFF. Use a clean editorial science style with one plant cross-section, simple arrows, high contrast, legible labels, and no other text.

What the rating looks at: Numbers, labels, and visual organization.

“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

Bria FIBO 2: fal, aspect ratio 1:1, n=1, seed=5555, Fal route default seed 5555; prompt-only VGL generation; approximately 1MP output, estimated cost $0.040000, generated Nov 1, 2026, 8:58 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

Bria FIBO 2 image SHA 256: 08e923a728a1475a6c461029900a5e97e808ad495c1910bdddca9f2665f23de9

Stable Diffusion 3.5 Medium image SHA 256: 6b8aa732e94479ad302904096c5031908141e4083ee099f080185aa04c2ea800

Infographic

Bria FIBO 2: fal, aspect ratio 1:1, n=1, seed=5555, Fal route default seed 5555; prompt-only VGL generation; approximately 1MP output, estimated cost $0.040000, generated Nov 1, 2026, 8:59 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

Bria FIBO 2 image SHA 256: e0a777d79106a8eadf3666524478108f6f17282864c33737c1005121f62baa95

Stable Diffusion 3.5 Medium image SHA 256: 61b12e227431387098e51c6ce6d059be9d8df9c85263b994bee62602e2ddfd16

Product photography

Bria FIBO 2: fal, aspect ratio 1:1, n=1, seed=5555, Fal route default seed 5555; prompt-only VGL generation; approximately 1MP output, estimated cost $0.040000, generated Nov 1, 2026, 8:58 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

Bria FIBO 2 image SHA 256: 5a8de701ae2cb8076dd6bb7106c0fec5c4c30c23c342ed3304a628d220d1f50c

Stable Diffusion 3.5 Medium image SHA 256: 2412a20e61c118ce7ab7ff83e285b96eb32d5c0f1171cc769e153db6655b8f67

Typography and layout

Bria FIBO 2: fal, aspect ratio 1:1, n=1, seed=5555, Fal route default seed 5555; prompt-only VGL generation; approximately 1MP output, estimated cost $0.040000, generated Nov 1, 2026, 8:58 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

Bria FIBO 2 image SHA 256: 2f9095a594104e147b3fe4991ed21bef67be104de646e7a4dfd6666b1f621855

Stable Diffusion 3.5 Medium image SHA 256: bc854c3269ea8bada6f764545f4a09abedc110219018c09f2fa5708a14d9af7e

The numbers at a glance

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

Bria FIBO 2

not in the arena

n/a

Stable Diffusion 3.5 Medium

not in the arena

GraduallyBenchour own rating, 0 to 100 · higher is better
70

Bria FIBO 2

Rank 22 of 108

25

Stable Diffusion 3.5 Medium

Rank 90 of 108

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

Bria FIBO 2

no API price

n/a

Stable Diffusion 3.5 Medium

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.

Bria FIBO 2

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 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 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.

KennzahlBria FIBO 2Stable Diffusion 3.5 Medium
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 1007025
GraduallyBench by task
Typography and layoutLegible text, hierarchy, and composition6922
Product photographyMaterials, reflections, and fine details8429
Character and detailAnatomy, clothing, and spatial consistency4831
InfographicNumbers, labels, and visual organization7820
API price
Per imagelower is bettern/an/a
100 imagesn/an/a
Profile
Releasedn/aOct 29, 2024
Weightsopen means: runs locallyunknownopen
AccessAPIAPI, local
Parametersnot published2.5 billion
Largest outputnot consistently publishednot 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: Bria FIBO 2 model source (verified Nov 1, 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 Bria FIBO 2 and Stable Diffusion 3.5 Medium from the same arena and category. Older model versions are not used as substitutes.

More comparisons

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