FLUX.2 Flexvs.FLUX1.1 [pro] Ultra

Which one is better?

In our own test, FLUX.2 Flex leads. FLUX1.1 [pro] Ultra has no arena rating yet. FLUX1.1 [pro] Ultra has no API price.

Test images

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

FLUX.2 Flex: Typography and layout, first image from the fixed test run — FLUX.2 Flex98 out of 100

FLUX1.1 [pro] Ultra: Typography and layout, first image from the fixed test run — FLUX1.1 [pro] Ultra22 out of 100

Result for “Typography and layout”:FLUX.2 Flex ahead

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.

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

FLUX.2 Flex: together, 1024x1024, n=1, seed=provider random, provider default steps, generated Aug 14, 2026, 12:25 PM. Source

FLUX1.1 [pro] Ultra: fal, aspect ratio 1:1; provider-native resolution, n=1, seed=3831910390, Fal exposes no resolution input; endpoint supports output up to 2K, Prompt enhancement disabled with enhance_prompt=false; default safety tolerance 2, estimated cost $0.060000, source 2048x2048, stored 1024x1024 (Lanczos3 downscale), generated Nov 2, 2026, 2:50 PM. Source

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

FLUX.2 Flex image SHA 256: 43b43d5782192d7284de2b824dd1caaaa6b25032d22fc3f8565d438b137089f3

FLUX1.1 [pro] Ultra image SHA 256: 0b97e1e3f33be2844c06cc18618fea633273ada7e9d6404f9769cdb8403ffbfc

Infographic

FLUX.2 Flex: together, 1024x1024, n=1, seed=provider random, provider default steps, generated Aug 14, 2026, 12:25 PM. Source

FLUX1.1 [pro] Ultra: fal, aspect ratio 1:1; provider-native resolution, n=1, seed=1664027293, Fal exposes no resolution input; endpoint supports output up to 2K, Prompt enhancement disabled with enhance_prompt=false; default safety tolerance 2, estimated cost $0.060000, source 2048x2048, stored 1024x1024 (Lanczos3 downscale), generated Nov 2, 2026, 2:50 PM. Source

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

FLUX.2 Flex image SHA 256: 105f60cdeb71a27021ffff1ad3c0ad919df4e5c74ad83b4628fbd64a8d795a09

FLUX1.1 [pro] Ultra image SHA 256: 2c7d24fcda220cf5eff966e1b857f11ad0e561f81ac9e4106ef1b4bd71686637

Product photography

FLUX.2 Flex: together, 1024x1024, n=1, seed=provider random, provider default steps, generated Aug 14, 2026, 12:25 PM. Source

FLUX1.1 [pro] Ultra: fal, aspect ratio 1:1; provider-native resolution, n=1, seed=291934417, Fal exposes no resolution input; endpoint supports output up to 2K, Prompt enhancement disabled with enhance_prompt=false; default safety tolerance 2, estimated cost $0.060000, source 2048x2048, stored 1024x1024 (Lanczos3 downscale), generated Nov 2, 2026, 2:49 PM. Source

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

FLUX.2 Flex image SHA 256: 9fef39b1500635ddbf78bcb8d3d9a68463ce952aa1fab89d12f6efe023907de7

FLUX1.1 [pro] Ultra image SHA 256: 7d497c35126a92de69af61e5721158a10f4e2acf88a8526dcdd0f8a9a571e028

Typography and layout

FLUX.2 Flex: together, 1024x1024, n=1, seed=provider random, provider default steps, generated Aug 14, 2026, 2:01 PM. Source

FLUX1.1 [pro] Ultra: fal, aspect ratio 1:1; provider-native resolution, n=1, seed=1909595532, Fal exposes no resolution input; endpoint supports output up to 2K, Prompt enhancement disabled with enhance_prompt=false; default safety tolerance 2, estimated cost $0.060000, source 2048x2048, stored 1024x1024 (Lanczos3 downscale), generated Nov 2, 2026, 2:49 PM. Source

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

FLUX.2 Flex image SHA 256: 324f87bf898593446a400abb43bd00eee015fa0a1dc160db0f864402fc0b38af

FLUX1.1 [pro] Ultra image SHA 256: 0dfeffb6c3489b9ac2e1ae9100793320fa4f5eab779269de7aff3a4b768595f3

The numbers at a glance

Arena ratingfrom votes by users · higher is better

1,156

FLUX.2 Flex

Rank 16 of 21

n/a

FLUX1.1 [pro] Ultra

not in the arena

GraduallyBenchour own rating, 0 to 100 · higher is better

FLUX.2 Flex

Rank 11 of 108

FLUX1.1 [pro] Ultra

Rank 83 of 108

Price per imagedollars through the API · lower is better

$0.06

FLUX.2 Flex

fairly cheap

n/a

FLUX1.1 [pro] Ultra

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.

FLUX.2 Flex

Subscription: No Black Forest Labs subscription includes this model. Through other providers from €6.83 a month (Poe Basic, with limited points). 26 plans in Germany.
Via API: $0.06 per image, 100 images $6.

FLUX1.1 [pro] Ultra

Subscription: No Black Forest Labs subscription includes this model. Through other providers from ≈ €9.54 a month (Krea Basic, with limited credits). 12 plans in Germany.
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.

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	FLUX.2 Flex	FLUX1.1 [pro] Ultra
Ratings
Arena ratingfrom votes by users, higher is better	1,156	n/a
Arena rank	Rank 16 of 21	n/a
Arena votesmore votes, a safer rating	156,849	n/a
GraduallyBenchour own rating, 0 to 100	73	31
GraduallyBench by task
Typography and layoutLegible text, hierarchy, and composition	98	22
Product photographyMaterials, reflections, and fine details	63	28
Character and detailAnatomy, clothing, and spatial consistency	75	45
InfographicNumbers, labels, and visual organization	57	28
API price
Per imagelower is better	$0.06	n/a
100 images	$6	n/a
Profile
Released	November 2025	n/a
Weightsopen means: runs locally	proprietary	unknown
Lifecycle	no notice	Separate Ultra API route / Ultra mode; no independent checkpoint established
Access	API, Web app	API
Parameters	not published	not published
Largest output	4 Megapixel	not consistently published
Plans in Germanynaming exactly this model	26	12

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

Sources: FLUX.2 Flex model source (verified Sep 24, 2026) · FLUX1.1 [pro] Ultra 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 FLUX.2 Flex and FLUX1.1 [pro] Ultra from the same arena and category. Older model versions are not used as substitutes.

More comparisons

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Test images

The numbers at a glance

FLUX.2 Flex

FLUX1.1 [pro] Ultra

All data side by side

Arena ratings by category

No shared arena score in the stored snapshot

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