Black Forest Labs

FLUX.2 [klein] 4B

AI Image Editing Model

Mode:

All Text to Image Image Edit

Image

Black Forest Labs' compact, open-source image generation model with sub-second inference, optimized for production and near real-time applications with multi-reference support

What FLUX.2 [klein] 4B is good at

Rankings based on human votes in the Lumenfall Arena, where real users pick their favorite without knowing which model made which image. Excels at #8 Art (Text-to-Image) , placing in the top 23% of all competing models.

FLUX.2 [klein] 4B Strengths

FLUX.2 [klein] 4B outperforms most competing models here

Art

Text-to-Image

Ranked #8 of 31 models · 70.0% win rate Leaderboard

FLUX.2 [klein] 4B

Same prompt, other models

Ranked using The Halloween Invitation The Reversed Rodeo

Other categories

FLUX.2 [klein] 4B competes but doesn't rank as highly

Product, Branding & Commercial

Text-to-Image

Ranked #29 of 61 models · 57.1% win rate Leaderboard

FLUX.2 [klein] 4B

Same prompt, other models

Ranked using Apollo 11: Journey to Tranq... Chalkboard Menu Magic Burger Explosion: Fie... Modern Clean Menu The Halloween Invitation Vintage Cafe Logo

Text Rendering

Text-to-Image

Ranked #30 of 61 models · 57.1% win rate Leaderboard

FLUX.2 [klein] 4B

Same prompt, other models

Ranked using Apollo 11: Journey to Tranq... Chalkboard Menu Isometric Miniature Diorama... Magic Burger Explosion: Fie... Modern Clean Menu The Halloween Invitation +1 more

Lighting, Shadows & Materials

Image Editing

Ranked #20 of 30 models · 53.8% win rate Leaderboard

FLUX.2 [klein] 4B

Before After

Bald man challenge

Before After

Golden Hour Stroll

Same prompt, other models

Before After

#1 Nano Banana... ranks higher

Before After

#8 Wan 2.6 ranks higher

Before After

#23 Wan 2.5 (Pr... ranks lower

Before After

#30 Bria FIBO ranks lower

Before After

#1 Nano Banana... ranks higher

Before After

#8 Wan 2.6 ranks higher

Before After

#23 Wan 2.5 (Pr... ranks lower

Before After

#30 Bria FIBO ranks lower

Ranked using Bald man challenge Golden Hour Stroll Man and Car in California Outfit Transfer Challenge Pose & Character Mashup

Preservation

Image Editing

Ranked #22 of 33 models · 50.0% win rate Leaderboard

FLUX.2 [klein] 4B

Before After

Bald man challenge

Before After

Golden Hour Stroll

Same prompt, other models

Before After

#1 Nano Banana... ranks higher

Before After

#9 Seedream 4.5 ranks higher

Before After

#25 FLUX.1 Kont... ranks lower

Before After

#33 Bria FIBO ranks lower

Ranked using Bald man challenge Golden Hour Stroll Man and Car in California Outfit Transfer Challenge Over-the-top cartoon carica... Pose & Character Mashup +1 more

Creativity

Text-to-Image

Ranked #41 of 62 models · 50.0% win rate Leaderboard

FLUX.2 [klein] 4B

Same prompt, other models

Ranked using Apollo 11: Journey to Tranq... Fantasy Warrior Isometric Miniature Diorama... The Halloween Invitation The Reversed Rodeo Vintage Cafe Logo

Prompt Adherence

Image Editing

Ranked #18 of 26 models · 44.4% win rate Leaderboard

FLUX.2 [klein] 4B

Same prompt, other models

Ranked using Outfit Transfer Challenge Over-the-top cartoon carica... Pose & Character Mashup

Photorealism

Text-to-Image

Ranked #44 of 62 models · 52.9% win rate Leaderboard

FLUX.2 [klein] 4B

Same prompt, other models

Ranked using Adorable Baby Animals in Su... Candid Street Photography Chalkboard Menu Fantasy Warrior Geometric Composition Magic Burger Explosion: Fie... +2 more

Adding & Editing Objects

Image Editing

Ranked #18 of 24 models · 60.0% win rate Leaderboard

FLUX.2 [klein] 4B

Same prompt, other models

Ranked using Man and Car in California Outfit Transfer Challenge

Aesthetics

Text-to-Image

Ranked #46 of 62 models · 52.2% win rate Leaderboard

FLUX.2 [klein] 4B

Same prompt, other models

Ranked using Adorable Baby Animals in Su... Candid Street Photography Fantasy Warrior Geometric Composition Isometric Miniature Diorama... Magic Burger Explosion: Fie... +5 more

Prompt Adherence

Text-to-Image

Ranked #46 of 61 models · 64.3% win rate Leaderboard

FLUX.2 [klein] 4B

Same prompt, other models

Ranked using Adorable Baby Animals in Su... Apollo 11: Journey to Tranq... Chalkboard Menu Geometric Composition Isometric Miniature Diorama... Magic Burger Explosion: Fie... +3 more

Photorealism

Image Editing

Ranked #23 of 29 models · 55.6% win rate Leaderboard

FLUX.2 [klein] 4B

Before After

Bald man challenge

Before After

Golden Hour Stroll

Same prompt, other models

Before After

#1 Nano Banana... ranks higher

Before After

#8 Seedream 4.5 ranks higher

Before After

#22 Wan 2.5 (Pr... ranks higher

Before After

#29 Bria FIBO ranks lower

Before After

#1 Nano Banana... ranks higher

Before After

#8 Seedream 4.5 ranks higher

Before After

#22 Wan 2.5 (Pr... ranks higher

Before After

#29 Bria FIBO ranks lower

Ranked using Bald man challenge Golden Hour Stroll Man and Car in California Outfit Transfer Challenge

Face & Identity

Image Editing

Ranked #16 of 18 models · 75.0% win rate Leaderboard

FLUX.2 [klein] 4B

Before After

Bald man challenge

Same prompt, other models

Before After

#1 Nano Banana 2 ranks higher

Before After

#5 GPT Image 1.5 ranks higher

Before After

#14 Seedream 4.0 ranks higher

Before After

#18 FLUX.2 [dev] ranks lower

Ranked using Bald man challenge Over-the-top cartoon carica...

People & Poses

Image Editing

Ranked #17 of 19 models · 33.3% win rate Leaderboard

FLUX.2 [klein] 4B

Before After

Golden Hour Stroll

Same prompt, other models

Before After

#1 Nano Banana... ranks higher

Before After

#5 FLUX.2 [kle... ranks higher

Before After

#15 Qwen Image ... ranks higher

Before After

#19 FLUX.2 [dev... ranks lower

Ranked using Golden Hour Stroll Pose & Character Mashup

Aesthetics

Image Editing

Ranked #18 of 18 models · 40.0% win rate Leaderboard

FLUX.2 [klein] 4B

Before After

Golden Hour Stroll

Same prompt, other models

Before After

#1 Nano Banana... ranks higher

Before After

#5 Nano Banana 2 ranks higher

Ranked using Golden Hour Stroll Man and Car in California Studio Ghibli Anime Style