Ideogram 4.0vs.FLUX.2 Klein 4B

Which one is better?

In our own test both are on par. Neither is in the arena. FLUX.2 Klein 4B has no API price.

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

Ideogram 4.0: Infographic, first image from the fixed test run — Ideogram 4.085 out of 100

FLUX.2 Klein 4B: Infographic, first image from the fixed test run — FLUX.2 Klein 4B19 out of 100

Result for “Infographic”:Ideogram 4.0 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

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

Ideogram 4.0: together, requested 2048x2048, stored 1024x1024 (Lanczos3 downscale), n=1, seed=provider random, provider default steps, generated Aug 14, 2026, 12:28 PM. Source

FLUX.2 Klein 4B: fal, requested 1024x1024, n=1, seed=707400387, Fal's published 4B text-to-image endpoint; default four inference steps, estimated cost $0.005000, generated Nov 1, 2026, 9:01 PM. Source

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

Ideogram 4.0 image SHA 256: d63d24515e4c3a8b7feafecaf995a511433307ae5faae1a1c26b2f0289578af9

FLUX.2 Klein 4B image SHA 256: 170cebb7cf75bc033a92371199812674f9cfa9641d5e9fb13947ccf892d4ed53

Infographic

Ideogram 4.0: together, requested 2048x2048, stored 1024x1024 (Lanczos3 downscale), n=1, seed=provider random, provider default steps, generated Aug 14, 2026, 12:28 PM. Source

FLUX.2 Klein 4B: fal, requested 1024x1024, n=1, seed=290140178, Fal's published 4B text-to-image endpoint; default four inference steps, estimated cost $0.005000, generated Nov 1, 2026, 9:01 PM. Source

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

Ideogram 4.0 image SHA 256: f57e6f5b7ae9038953087720387aa4a901832a1794dbb5e3f337f9d3ef213d62

FLUX.2 Klein 4B image SHA 256: 42b729a5a72207b5a92464f3ecf1713459ab1b105c3041c14b75c7622630015e

Product photography

Ideogram 4.0: together, requested 2048x2048, stored 1024x1024 (Lanczos3 downscale), n=1, seed=provider random, provider default steps, generated Aug 14, 2026, 12:27 PM. Source

FLUX.2 Klein 4B: fal, requested 1024x1024, n=1, seed=1254275381, Fal's published 4B text-to-image endpoint; default four inference steps, estimated cost $0.005000, generated Nov 1, 2026, 9:00 PM. Source

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

Ideogram 4.0 image SHA 256: 59b59cf5294653460f06085eedcfeb676b8c50f88f58f038b32659841f0500dd

FLUX.2 Klein 4B image SHA 256: 8fae4a7f6abb7467281c439dc93aa656031626f88c8a54f95f49850cbf045580

Typography and layout

Ideogram 4.0: together, requested 2048x2048, stored 1024x1024 (Lanczos3 downscale), n=1, seed=provider random, provider default steps, generated Aug 14, 2026, 2:01 PM. Source

FLUX.2 Klein 4B: fal, requested 1024x1024, n=1, seed=1270698692, Fal's published 4B text-to-image endpoint; default four inference steps, estimated cost $0.005000, generated Nov 1, 2026, 9:00 PM. Source

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

Ideogram 4.0 image SHA 256: 088eabf7b8c37bd377011dd2649a2deeee49ffb903e4798a6930bb94144f1eb4

FLUX.2 Klein 4B image SHA 256: 7c2c3e30c20c98e90033087b2b95b151bddc3252dd4aed7092fcbca4ae4ea96e

The numbers at a glance

Arena ratingfrom votes by users · higher is better

n/a

Ideogram 4.0

not in the arena

n/a

FLUX.2 Klein 4B

not in the arena

GraduallyBenchour own rating, 0 to 100 · higher is better

Ideogram 4.0

Rank 33 of 74

FLUX.2 Klein 4B

Rank 55 of 74

Price per imagedollars through the API · lower is better

$0.06

Ideogram 4.0

fairly cheap

n/a

FLUX.2 Klein 4B

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.

Ideogram 4.0

Subscription: Free to use at Ideogram (Ideogram Free, with limited credits), more from ≈ €21.30 a month (Ideogram Plus, with limited credits). Through other providers from ≈ €9.59 a month (Krea Basic, with limited credits). 16 plans in Germany.
Via API: $0.06 per image, 100 images $6.
License: Open weights.

FLUX.2 Klein 4B

Subscription: No Black Forest Labs subscription includes this model. Through other providers from €6.83 a month (Poe Basic, with limited points). 12 plans in Germany.
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 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.

Kennzahl	Ideogram 4.0	FLUX.2 Klein 4B
Ratings
Arena ratingfrom votes by users, higher is better	n/a	n/a
Arena rank	n/a	n/a
Arena votesmore votes, a safer rating	n/a	n/a
GraduallyBenchour own rating, 0 to 100	59	37
GraduallyBench by task
Typography and layoutLegible text, hierarchy, and composition	79	21
Product photographyMaterials, reflections, and fine details	8	54
Character and detailAnatomy, clothing, and spatial consistency	62	53
InfographicNumbers, labels, and visual organization	85	19
API price
Per imagelower is better	$0.06	n/a
100 images	$6	n/a
Profile
Released	June 2026	n/a
Weightsopen means: runs locally	open	open
Access	API, Web app, local	API, local
Parameters	9.3 billion	4 billion
Largest output	2K	not consistently published
Plans in Germanynaming exactly this model	16	12

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

Sources: Ideogram 4.0 model source (verified Aug 15, 2026) · FLUX.2 Klein 4B 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 Ideogram 4.0 and FLUX.2 Klein 4B from the same arena and category. Older model versions are not used as substitutes.

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First image modelSecond image model

More matchups

Compare Ideogram 4.0 and FLUX.2 Klein 4B with other important image models.

View the complete image model comparison

Same prompt, two images

The numbers at a glance

Ideogram 4.0

FLUX.2 Klein 4B

All data side by side

Arena ratings by category

No shared arena score in the stored snapshot

Compare another matchup

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