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Luma Uni-1.1 Maxvs.GPT Image 2.5 Flare

Which one is better?

In our own test both are on par. Luma Uni-1.1 Max has no arena rating yet. Luma Uni-1.1 Max has no API price.

Test images

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

Luma Uni-1.1 Max: Infographic, first image from the fixed test run
Luma Uni-1.1 Max79 out of 100
GPT Image 2.5 Flare: Infographic, first image from the fixed test run
GPT Image 2.5 Flare91 out of 100

Result for “Infographic”:GPT Image 2.5 Flare slightly 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

Luma Uni-1.1 Max: fal, aspect ratio 1:1, n=1, seed=provider random, estimated cost $0.102000, source 2048x2048, stored 1024x1024 (Lanczos3 downscale), generated Aug 14, 2026, 1:47 PM. Source

GPT Image 2.5 Flare: openai, 1024x1024, quality high, n=1, generated Sep 28, 2026, 8:53 PM. Source

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

Luma Uni-1.1 Max image SHA 256: 8034ca5627e1a256cdf1d06fc87b583d91d971d02edc9af7df52cd6721d3ea9c

GPT Image 2.5 Flare image SHA 256: 85b17c41b19389cae3ea073ef582e6065a321d741978e772987d22e3ea3e3b08

Infographic

Luma Uni-1.1 Max: fal, aspect ratio 1:1, n=1, seed=provider random, estimated cost $0.102000, source 2048x2048, stored 1024x1024 (Lanczos3 downscale), generated Aug 14, 2026, 1:49 PM. Source

GPT Image 2.5 Flare: openai, 1024x1024, quality high, n=1, generated Sep 28, 2026, 8:53 PM. Source

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

Luma Uni-1.1 Max image SHA 256: 36dea214eb680804d4fea089eec3d4f10a4bf7b7a71c7a80f92313a37e8c2f73

GPT Image 2.5 Flare image SHA 256: bc752abfce1c0d27b73e4084c3e7d82c4c0f71e0e5af97a80f4b24326cc4686e

Product photography

Luma Uni-1.1 Max: fal, aspect ratio 1:1, n=1, seed=provider random, estimated cost $0.102000, source 2048x2048, stored 1024x1024 (Lanczos3 downscale), generated Aug 14, 2026, 1:43 PM. Source

GPT Image 2.5 Flare: openai, 1024x1024, quality high, n=1, generated Sep 28, 2026, 8:53 PM. Source

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

Luma Uni-1.1 Max image SHA 256: 4890cdf8b858c5740124e3b2ba038b73f6a35decc7e3e3d920890462b6e89c2b

GPT Image 2.5 Flare image SHA 256: 69fedb7d635d1329c461ff1ee9e5cf8384119e218e3b3bdb93b9e11f728335d8

Typography and layout

Luma Uni-1.1 Max: fal, aspect ratio 1:1, n=1, seed=provider random, estimated cost $0.102000, source 2048x2048, stored 1024x1024 (Lanczos3 downscale), generated Aug 14, 2026, 2:40 PM. Source

GPT Image 2.5 Flare: openai, 1024x1024, quality high, n=1, generated Sep 28, 2026, 8:52 PM. Source

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

Luma Uni-1.1 Max image SHA 256: d2a6162d544def0a283ed62f939b33252636d296a21142111851ecdedd2989d3

GPT Image 2.5 Flare image SHA 256: cc90d54a99e1bad9e0cc8e4196746fb1d56a2fdd2a9ee101dbbf270ef5e4b6a8

The numbers at a glance

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

Luma Uni-1.1 Max

not in the arena

1,401

GPT Image 2.5 Flare

Rank 2 of 21

GraduallyBenchour own rating, 0 to 100 · higher is better
71

Luma Uni-1.1 Max

Rank 20 of 108

72

GPT Image 2.5 Flare

Rank 18 of 108

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

Luma Uni-1.1 Max

no API price

$0.21

GPT Image 2.5 Flare

expensive

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.

Luma Uni-1.1 Max

Subscription
n/a No plan in Germany names exactly this model.
Via API
No API price known. Access: API, Web app.

GPT Image 2.5 Flare

Subscription
No OpenAI subscription includes this model. Through other providers from ≈ €6.34 a month (ElevenLabs Starter, with limited credits). 61 plans in Germany.
Via API
$0.21 per image, 100 images $21.07.

Subscriptions only count plans that name exactly this model. Subscription prices include VAT, API prices are in dollars.

Arena rating (LMArena) from Oct 28, 2026 · GraduallyBench from Nov 3, 2026 · API prices 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.

KennzahlLuma Uni-1.1 MaxGPT Image 2.5 Flare
Ratings
Arena ratingfrom votes by users, higher is bettern/a1,401
Arena rankn/aRank 2 of 21
Arena votesmore votes, a safer ratingn/a39,218
GraduallyBenchour own rating, 0 to 1007172
GraduallyBench by task
Typography and layoutLegible text, hierarchy, and composition7564
Product photographyMaterials, reflections, and fine details7169
Character and detailAnatomy, clothing, and spatial consistency6063
InfographicNumbers, labels, and visual organization7991
API price
Per imagelower is bettern/a$0.21
100 imagesn/a$21.07
Profile
ReleasedMay 2026Sep 8, 2026
Weightsopen means: runs locallyproprietaryproprietary
AccessAPI, Web appAPI
Parametersnot publishednot published
Largest output2Knot consistently published
Plans in Germanynaming exactly this modeln/a61

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

Sources: Luma Uni-1.1 Max model source (verified Aug 15, 2026) · GPT Image 2.5 Flare model source (verified Sep 22, 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 Max and GPT Image 2.5 Flare from the same arena and category. Older model versions are not used as substitutes.

More comparisons with Luma Uni-1.1 Max and GPT Image 2.5 Flare

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Predecessor and successor

  • No predecessor recorded for Luma Uni-1.1 Max
  • Luma Uni-1.1 Max has no successor yet
  • No predecessor recorded for GPT Image 2.5 Flare
  • GPT Image 2.5 Flare has no successor yet