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FLUX.2 Flexvs.Ideogram 4.5

Which one is better?

In our own test both are on par. Ideogram 4.5 has no arena rating yet. Ideogram 4.5 costs 1.7 times as much per image.

Same prompt, two 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 Flex71 out of 100
Ideogram 4.5: Typography and layout, first image from the fixed test run
Ideogram 4.516 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

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

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

Ideogram 4.5: fal, requested 1024x1024, n=1, seed=676327336, prompt expansion disabled, quality low, estimated cost $0.030000, generated Nov 1, 2026, 8:44 PM. Source

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

FLUX.2 Flex image SHA 256: 43b43d5782192d7284de2b824dd1caaaa6b25032d22fc3f8565d438b137089f3

Ideogram 4.5 image SHA 256: 765cb852ecb10a396bad4bd18c2dc9fcc77221ffff3f0b94ef9eccf4d190b418

Infographic

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

Ideogram 4.5: fal, requested 1024x1024, n=1, seed=1482950298, prompt expansion disabled, quality low, estimated cost $0.030000, generated Nov 1, 2026, 8:44 PM. Source

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

FLUX.2 Flex image SHA 256: 105f60cdeb71a27021ffff1ad3c0ad919df4e5c74ad83b4628fbd64a8d795a09

Ideogram 4.5 image SHA 256: c97b4321e68bf1617a4dc96b5e1f9372344b09b9ff987f07d0e9813e6210c656

Product photography

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

Ideogram 4.5: fal, requested 1024x1024, n=1, seed=1376877115, prompt expansion disabled, quality low, estimated cost $0.030000, generated Nov 1, 2026, 8:44 PM. Source

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

FLUX.2 Flex image SHA 256: 9fef39b1500635ddbf78bcb8d3d9a68463ce952aa1fab89d12f6efe023907de7

Ideogram 4.5 image SHA 256: b9427281a64b3103f52f439b8797bd11763f813a8ef142bf79d96e936b349ae1

Typography and layout

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

Ideogram 4.5: fal, requested 1024x1024, n=1, seed=988679089, prompt expansion disabled, quality low, estimated cost $0.030000, generated Nov 1, 2026, 8:44 PM. Source

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

FLUX.2 Flex image SHA 256: 324f87bf898593446a400abb43bd00eee015fa0a1dc160db0f864402fc0b38af

Ideogram 4.5 image SHA 256: ebe1fe3dccf258807db9a9063c1034185c1b3e91f0d8c9bd86c53525d374dd9c

The numbers at a glance

Arena ratingfrom votes by users · higher is better
1,156

FLUX.2 Flex

Rank 17 of 22

n/a

Ideogram 4.5

not in the arena

GraduallyBenchour own rating, 0 to 100 · higher is better
57

FLUX.2 Flex

Rank 35 of 74

56

Ideogram 4.5

Rank 38 of 74

Price per imagedollars through the API · lower is better
$0.06

FLUX.2 Flex

fairly cheap

$0.10

Ideogram 4.5

expensive

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.

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.

Ideogram 4.5

Subscription
No Ideogram subscription includes this model. Through other providers from ≈ €9.59 a month (Krea Basic, with limited credits). 33 plans in Germany.
Via API
$0.10 per image, 100 images $10.
Weights
unknown.

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 1, 2026 · API prices from Oct 28, 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.

KennzahlFLUX.2 FlexIdeogram 4.5
Ratings
Arena ratingfrom votes by users, higher is better1,156n/a
Arena rankRank 17 of 22n/a
Arena votesmore votes, a safer rating156,876n/a
GraduallyBenchour own rating, 0 to 1005756
GraduallyBench by task
Typography and layoutLegible text, hierarchy, and composition7116
Product photographyMaterials, reflections, and fine details5659
Character and detailAnatomy, clothing, and spatial consistency5868
InfographicNumbers, labels, and visual organization4182
API price
Per imagelower is better$0.06$0.10
100 images$6$10
Profile
ReleasedNovember 2025n/a
Weightsopen means: runs locallyproprietaryunknown
AccessAPI, Web appAPI
Parametersnot publishednot published
Largest output4 Megapixelnot consistently published
Plans in Germanynaming exactly this model2633

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) · Ideogram 4.5 model source (verified Nov 1, 2026)

Arena ratings by category

From blind votes on LMArena. “Ahead” means the lead is clear.

Arena rating per categoryfrom votes by users · higher is betterFLUX.2 FlexIdeogram 4.5
Text to Image ArenaFLUX.2 Flex: 1,026Ideogram 4.5: 1,015level
Image Editing ArenaFLUX.2 Flex: 999Ideogram 4.5: 1,070Ideogram 4.5 ahead
Image Editing: Multi-image editingFLUX.2 Flex: 1,234Ideogram 4.5: 1,337Ideogram 4.5 ahead
Image Editing: OverallFLUX.2 Flex: 1,224Ideogram 4.5: 1,347Ideogram 4.5 ahead

Artificial Analysis from Oct 28, 2026 · LMArena from Oct 28, 2026

All individual values with sources
RatingFLUX.2 FlexIdeogram 4.5Source
Text to Image Arena1,0261,015Artificial AnalysisRetrieved Oct 28, 2026
Image Editing Arena9991,070Artificial AnalysisRetrieved Oct 28, 2026
Image Editing: Multi-image editing1,2341,337LMArenaRetrieved Oct 28, 2026
Image Editing: Overall1,2241,347LMArenaRetrieved Oct 28, 2026

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