Skip to main content

Nano Banana (Gemini 2.5 Flash Image)vs.FLUX.1 [dev]

Which one is better?

In our own test, Nano Banana (Gemini 2.5 Flash Image) leads. Neither is in the arena. Neither has an API price.

Same prompt, two images

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

Nano Banana (Gemini 2.5 Flash Image): Typography and layout, first image from the fixed test run
Nano Banana (Gemini 2.5 Flash Image)58 out of 100
FLUX.1 [dev]: Typography and layout, first image from the fixed test run
FLUX.1 [dev]7 out of 100

Result for “Typography and layout”:Nano Banana (Gemini 2.5 Flash Image) 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

Nano Banana (Gemini 2.5 Flash Image): fal, aspect ratio 1:1, n=1, seed=provider random, Fal schema does not expose an output-resolution parameter; require square output of at least 1024px, estimated cost $0.039800, generated Nov 1, 2026, 8:51 PM. Source

FLUX.1 [dev]: fal, requested 1024x1024, n=1, seed=1386633789, estimated cost $0.025000, generated Nov 1, 2026, 9:00 PM. Source

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

Nano Banana (Gemini 2.5 Flash Image) image SHA 256: 69ecb842e42e25cf866919f9bfa573f08398a78d4fa46bca2f9c9c27996d80a7

FLUX.1 [dev] image SHA 256: 8cc425497844ab30bdb5f4b32b613219d01f1f21289d68fc198bb5980a3c6465

Infographic

Nano Banana (Gemini 2.5 Flash Image): fal, aspect ratio 1:1, n=1, seed=provider random, Fal schema does not expose an output-resolution parameter; require square output of at least 1024px, estimated cost $0.039800, generated Nov 1, 2026, 8:51 PM. Source

FLUX.1 [dev]: fal, requested 1024x1024, n=1, seed=1094286267, estimated cost $0.025000, generated Nov 1, 2026, 9:00 PM. Source

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

Nano Banana (Gemini 2.5 Flash Image) image SHA 256: d12f93429b044d541a8ea71a1fd135f89343ff6efaefafe679e9e28699ee54cf

FLUX.1 [dev] image SHA 256: 3d5c50031e545a82fe0617e724937b960d6e77c8371795f99fdf8037a2de8e9c

Product photography

Nano Banana (Gemini 2.5 Flash Image): fal, aspect ratio 1:1, n=1, seed=provider random, Fal schema does not expose an output-resolution parameter; require square output of at least 1024px, estimated cost $0.039800, generated Nov 1, 2026, 8:51 PM. Source

FLUX.1 [dev]: fal, requested 1024x1024, n=1, seed=1029917942, estimated cost $0.025000, generated Nov 1, 2026, 8:59 PM. Source

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

Nano Banana (Gemini 2.5 Flash Image) image SHA 256: afdcf628727069979bcc9797a18b283079f9cafb136d8fcbc118ae1fc5523a15

FLUX.1 [dev] image SHA 256: 2932ee8c5af8a92655a9a9c4ad9ff782d366a51b9dad5553d84fe241d084d5c0

Typography and layout

Nano Banana (Gemini 2.5 Flash Image): fal, aspect ratio 1:1, n=1, seed=provider random, Fal schema does not expose an output-resolution parameter; require square output of at least 1024px, estimated cost $0.039800, generated Nov 1, 2026, 8:50 PM. Source

FLUX.1 [dev]: fal, requested 1024x1024, n=1, seed=1184329997, estimated cost $0.025000, generated Nov 1, 2026, 8:59 PM. Source

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

Nano Banana (Gemini 2.5 Flash Image) image SHA 256: eeafdc566564b9398bc45b9e8cbaa7f4ca38a1b8795e198cd056c4bc47f72121

FLUX.1 [dev] image SHA 256: 5a33abcfb19aa0d6d544ad7beb0ce59f51382a9418b5420edcc7aa553d578382

The numbers at a glance

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

Nano Banana (Gemini 2.5 Flash Image)

not in the arena

n/a

FLUX.1 [dev]

not in the arena

GraduallyBenchour own rating, 0 to 100 · higher is better
54

Nano Banana (Gemini 2.5 Flash Image)

Rank 44 of 74

29

FLUX.1 [dev]

Rank 59 of 74

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

Nano Banana (Gemini 2.5 Flash Image)

no API price

n/a

FLUX.1 [dev]

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.

Nano Banana (Gemini 2.5 Flash Image)

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

FLUX.1 [dev]

Subscription
No Black Forest Labs subscription includes this model. Through other providers from ≈ €9.59 a month (Krea Basic, with limited credits). 6 plans in Germany.
Via API
No API price known. Access: API, local.
License
Open weights, Older T2I checkpoint under a non-commercial license; hosted BFL API remains documented.

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.

KennzahlNano Banana (Gemini 2.5 Flash Image)FLUX.1 [dev]
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 1005429
GraduallyBench by task
Typography and layoutLegible text, hierarchy, and composition587
Product photographyMaterials, reflections, and fine details7740
Character and detailAnatomy, clothing, and spatial consistency5440
InfographicNumbers, labels, and visual organization2727
API price
Per imagelower is bettern/an/a
100 imagesn/an/a
Profile
ReleasedOct 2, 2025n/a
Weightsopen means: runs locallyunknownopenOlder T2I checkpoint under a non-commercial license; hosted BFL API remains documented
LifecycleActive stable API ID; earliest announced shutdown date is March 15, 2027no notice
AccessAPIAPI, local
Parametersnot published12 billion
Largest outputnot consistently publishednot consistently published
Plans in Germanynaming exactly this modeln/a6

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

Sources: Nano Banana (Gemini 2.5 Flash Image) model source, status source (verified Nov 1, 2026) · FLUX.1 [dev] 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 Nano Banana (Gemini 2.5 Flash Image) and FLUX.1 [dev] from the same arena and category. Older model versions are not used as substitutes.

Compare another matchup

More matchups

Related image model comparisons

Compare Nano Banana (Gemini 2.5 Flash Image) and FLUX.1 [dev] with other important image models.

View the complete image model comparison