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Luma Uni-1.1vs.Stable Image Core

Which one is better?

We have not tested Stable Image Core ourselves yet. Neither is in the arena. Neither has an API price.

Same prompt, two images

Same task, the first image of each.

Luma Uni-1.1: Typography and layout, first image from the fixed test run
Luma Uni-1.164 out of 100

No image from the four fixed tasks for Stable Image Core yet.This model does not yet have a complete GraduallyBench run.

Stable Image Corenot tested yet

Result for “Typography and layout”:only Luma Uni-1.1 tested

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.

Missing image run for Stable Image Core

This model does not yet have a complete GraduallyBench run. Run the missing fixed tasks, archive the first output of each, and evaluate them blind.

Documentation

The numbers at a glance

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

Luma Uni-1.1

not in the arena

n/a

Stable Image Core

not in the arena

GraduallyBenchour own rating, 0 to 100 · higher is better
67

Luma Uni-1.1

Rank 14 of 74

n/a

Stable Image Core

not tested yet

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

Luma Uni-1.1

no API price

n/a

Stable Image Core

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.

Luma Uni-1.1

Subscription
No Luma AI subscription includes this model. Through other providers from €19.04 a month (Magnific Premium, with limited credits). 6 plans in Germany.
Via API
No API price known. Access: API.
Weights
unknown.

Stable Image Core

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

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.

KennzahlLuma Uni-1.1Stable Image Core
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 10067n/a
GraduallyBench by task
Typography and layoutLegible text, hierarchy, and composition64n/a
Product photographyMaterials, reflections, and fine details59n/a
Character and detailAnatomy, clothing, and spatial consistency48n/a
InfographicNumbers, labels, and visual organization95n/a
API price
Per imagelower is bettern/an/a
100 imagesn/an/a
Profile
ReleasedMay 11, 2026n/a
Weightsopen means: runs locallyunknownunknown
Lifecycleno noticeCurrent API generation service; independent checkpoint not published
AccessAPIAPI
Parametersnot publishednot published
Largest outputnot consistently publishednot consistently published
Plans in Germanynaming exactly this model6n/a

API prices for one image at 1,024 × 1,024 pixels according to Artificial Analysis.

Sources: Luma Uni-1.1 model source (verified Nov 1, 2026) · Stable Image Core model source, status 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 Luma Uni-1.1 and Stable Image Core from the same arena and category. Older model versions are not used as substitutes.

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