Black Forest Labs' aesthetically-tuned 12-billion parameter flow transformer optimized for high-quality images with incredible aesthetics, suitable for personal and commercial use
Settled by community votes across 13 shared challenges, with an AI judge weighing in on each.
FLUX.1 Krea [dev]
#48 of 62 in Text-to-Image
FLUX.2 [dev] Flash
#5 of 62 in Text-to-Image
Where the votes landed
FLUX.1 Krea [dev]
0%
win rate
Ties
0%
FLUX.2 [dev] Flash
0%
win rate
Challenge by challenge
The strongest take from each model on every shared challenge, with the AI judge's read.
Geometric Composition
Text-to-Image“A glass cube on a wooden table. Inside the cube is a small blue sphere. On top of the cube sits a red book. A green plant is behind the cube, partially visible through the glass. Soft window light from the left.”
AI Judge Analysis
FLUX.1 Krea [dev]
- + Excellent photorealistic lighting and shallow depth of field.
- + Very realistic refraction and reflection inside the glass cube and sphere.
- + High visual appeal with a warm, professional aesthetic.
- − The plant is very dark and out of focus, making it hard to see 'through the glass' as requested.
- − The reflection of the sphere inside the cube is slightly distracting.
FLUX.2 [dev] Flash
- + Strong prompt adherence regarding spatial placement and composition.
- + Crystal clear visibility of the plant behind the glass as requested.
- + Realistic material textures on the wooden table and the book cover.
- − The lighting feels a bit flatter compared to the other model.
- − The glass cube edges look slightly thick and less elegant.
Verdict: Both models followed the complex spatial instructions perfectly. FLUX.2 [dev] Flash is the winner because it better captured the specific requirement of the plant being 'visible through the glass', whereas FLUX.1 Krea [dev] obscured the plant in shadow and blur. FLUX.2 also provided a more natural-looking window light source that felt grounded in the scene.
Candid Street Photography
Text-to-Image“A candid street photo of an elderly Japanese man repairing a red bicycle in light rain, reflections on wet pavement, shallow depth of field, 50mm lens, natural skin texture, imperfect framing, motion blur from passing cars, cinematic but realistic, no stylization.”
AI Judge Analysis
FLUX.1 Krea [dev]
- + Excellent depiction of motion blur from passing cars
- + Natural and realistic skin texture for an older subject
- + Captures a heavy atmospheric rain effect
- − The man is holding the bicycle rather than repairing it
- − The framing is a bit more centered than an 'imperfect' candid shot might suggest
FLUX.2 [dev] Flash
- + Successfully shows the subject actively repairing the bicycle with tools
- + The bicycle design, including the basket, feels more culturally authentic to Japanese streets
- + Good detail on the hands and tools
- − The passing cars are quite sharp, failing the motion blur prompt
- − The rain effect is less noticeable compared to Image A
Verdict: FLUX.2 [dev] Flash does a much better job with the narrative element of 'repairing' the bike and provides a more detailed, culturally accurate scene. However, FLUX.1 Krea [dev] better captures the technical photographic requests, specifically the motion blur of vehicles and the atmospheric density of the rain.
Fantasy Warrior
Text-to-Image“Close portrait of a battle-worn paladin in ornate engraved plate armor, hair braided with small beads, faint scars and dirt on the skin, warm torchlight reflecting off metal, shallow depth of field, bokeh sparks, lifelike eyes, highly detailed texture on leather straps and cloth underlayer.”
AI Judge Analysis
FLUX.1 Krea [dev]
- + Excellent high-contrast dramatic lighting
- + Superior engraving detail on the pauldrons
- + Very clean and realistic facial structure
- − The 'beads' in the hair look more like metallic pins or studs than traditional beads
- − Skin looks a bit too smooth for a 'battle-worn' description despite the blood spatters
FLUX.2 [dev] Flash
- + Perfect adherence to the 'beaded' hair request with varied colorful beads
- + Excellent texture on leather straps and metal buckles
- + Very lifelike eyes and more realistic skin texture with visible pores
- − The bokeh sparks are a bit overwhelming and uniform across the image
- − Armor engraving is slightly less intricate than in the other model
Verdict: Both models performed exceptionally well, but FLUX.2 [dev] Flash captured more of the specific prompt nuances, such as the colorful beads in the hair and the gritty texture of the leather straps. FLUX.1 Krea [dev] produced a more striking, high-fashion fantasy portrait, but FLUX.2 [dev] Flash felt more grounded and accurate to the requested 'battle-worn' aesthetic.
Modern Clean Menu
Text-to-Image“Modern minimalist restaurant menu design, white background with colorful food photos in grid, sections for appetizers/pizza/mains, bold sans-serif fonts, vibrant accents, clean professional layout for casual dining.”
AI Judge Analysis
FLUX.1 Krea [dev]
- + Strong layout balance between text and the image grid.
- + Includes the specific categories (Appetizers/Mains) requested.
- + Excellent legibility of the menu structure and prices.
- − Repetitive category headings (Appetizers appears twice).
- − Text rendering for item names is slightly garbled.
FLUX.2 [dev] Flash
- + Successfully incorporates colorful accents as requested in the prompt.
- + High-quality, distinct food photography in a clear grid.
- + Uses bold sans-serif fonts effectively for headings.
- − Layout is slightly disjointed with text overlapping image borders.
- − Spelling in the main title is incorrect ('CASSUAL5').
Verdict: FLUX.1 Krea [dev] produces a more professional and realistic menu layout that feels ready for use in a casual dining setting, despite some minor text artifacts. While FLUX.2 [dev] Flash captures the 'vibrant accents' better, it suffers from poorer structural composition and title typos.
Magic Burger Explosion: Fiery Photorealism Challenge
Text-to-Image“Ad for 'Magic Burger'. Dynamic, exploded burger with all components (bun, patty, cheese, lettuce, tomato, sauce) suspended in mid-air. Emphasize photorealistic detail and a sense of motion. Dark, fiery background with glowing embers. Integrate text: 'MAGIC BURGER' as a prominent title, 'LIMITED TIME ONLY' as a secondary message, and '€6.99' in a starburst, all rendered with a fiery, glowing effect.”
AI Judge Analysis
FLUX.1 Krea [dev]
- + High level of photorealistic detail on the meat patty texture and the bun seeds.
- + Dynamic lighting with clear reflections on the sauce.
- + Correctly included all requested text elements.
- − Failed to apply the 'fiery, glowing effect' to the text as requested, opting for plain flat white/red text.
- − The 6.99 price is not inside a starburst; it is positioned below the burger with a slight outer glow.
- − The burger components are only slightly separated rather than fully 'exploded' or suspended.
FLUX.2 [dev] Flash
- + Perfectly followed the stylistic instruction for fiery, glowing text effects.
- + Accurately placed the price within a fiery starburst as prompted.
- + Better sense of motion with suspended droplets and more distinct separation of ingredients.
- − The 'LIMITED TIME ONLY' text is smaller and slightly less legible than Model A.
- − The bun texture looks slightly more digital/soft compared to the sharp realistic grain in Model A.
Verdict: Model B (FLUX.2 [dev] Flash) is the clear winner for its superior prompt adherence regarding the visual style of the text and the inclusion of the starburst element. While Model A produced a highly realistic burger, it failed to execute the 'fiery glowing effect' and 'starburst' requirements, whereas Model B integrated these creative elements seamlessly to create a cohesive advertisement.
Chalkboard Menu
Text-to-Image“Handwritten-style chalkboard menu in a cozy café, all text rendered in the exact same realistic chalk handwriting style with natural variations in letter size, slight slant, and chalk texture — no printed or digital fonts anywhere on the board. Title at the top in elegant cursive chalk handwriting: ‘TODAY’S SPECIALS – APRIL 30, 2026’. Below it, three menu items also in the same handwritten chalk style: ‘Truffle Mushroom Risotto – $24’, ‘Grilled Octopus with Lemon & Herbs – $28’, ‘Brown Butter Chocolate Chip Cookies – $9’. At the very bottom, smaller text in the identical handwritten chalk style (slightly smaller but still clearly legible with the same handwriting characteristics): ‘All items made fresh daily • Ask about our gluten-free options’. Warm ambient café lighting, visible chalk dust and smudges, realistic handwriting imperfections, no clean printed text anywhere.”
AI Judge Analysis
FLUX.1 Krea [dev]
- + Successfully rendered the date and the specific 'April 30, 2026' text.
- + Good framing of the chalkboard within a wooden frame.
- + Nice cursive flow in the handwritten sections.
- − Significant text hallucinations and repetition (e.g., 'Gruffle Mushroom' and 'Grilled Butter').
- − The chalk texture looks a bit like a digital white pen rather than actual chalk dust.
- − Failed to correctly include 'Herbs' in the Octopus item.
FLUX.2 [dev] Flash
- + Excellent chalk texture with realistic dust smudges and varying pressure.
- + Very high adherence to the requested menu items with minimal errors.
- + Beautiful café background creates a much better sense of atmosphere.
- − Small repetition of the '$9' price on the final item.
- − The cursive for the title is less 'elegant' and more casual than requested.
Verdict: FLUX.2 [dev] Flash is the clear winner as it followed the menu item list almost perfectly, whereas FLUX.1 Krea [dev] hallucinated several nonsensical menu items like 'Gruffle Mushroom' and 'Grilled Butter'. FLUX.2 [dev] Flash also captured a much more authentic chalk texture on the board and provided a more immersive background scene.
The Reversed Rodeo
Text-to-Image“Horse riding astronaut in space — horse on top, not vice versa. Surreal, highly detailed, cinematic.”
AI Judge Analysis
FLUX.1 Krea [dev]
- + Excellent lighting and cinematic composition
- + High quality textures on the horse and space suit
- + Imaginative mechanical integration between the horse and the astronaut's gear
- − Failed the specific prompt instruction to have the horse on top of the astronaut
- − Anatomical issues where the horse's front legs merge oddly with the mechanical equipment
FLUX.2 [dev] Flash
- + Natural and detailed rendering of the horse's mane and fur
- + Rich, vibrant background with multiple celestial bodies
- + Clear, high-resolution details on the astronaut's suit
- − Failed the specific prompt instruction to have the horse on top of the astronaut
- − The horse's rear right leg is anatomically disjointed
Verdict: Both models completely failed to follow the logical reversal requested in the prompt ('horse on top, not vice versa'), instead providing high-quality versions of the standard 'astronaut riding a horse' trope. FLUX.1 Krea [dev] is slightly preferred for its more striking lighting and cleaner cinematic style, despite both models ignoring the core creative constraint.
The Capybara Taxi Driver
Text-to-Image“Photorealistic scene inside a yellow New York taxi at night. A capybara is driving, wearing a yellow taxi driver cap and a dark jacket. It has a calm, professional expression and both front paws on the steering wheel. In the back seat sits a human businesswoman in a coat, looking at her phone with a completely normal, bored expression (as if this is just another normal ride). Through the windows you can see the streets of Manhattan at night with blurred lights. Realistic taxi interior, photorealistic, detailed fur and fabric, 35mm lens, night lighting with reflections, shallow depth of field.”
AI Judge Analysis
FLUX.1 Krea [dev]
- + Excellent texture on the capybara's fur
- + Good interior lighting and cinematic depth of field
- + Includes the specified yellow cap and dark jacket accurately
- − Included extra people in the image that were not requested
- − The capybara's paws are merged and blurry on the steering wheel
- − Perspective is slightly awkward for an 'inside' scene
FLUX.2 [dev] Flash
- + Perfect composition showing the driver and the passenger as requested
- + Highly realistic capybara anatomy and 'professional' expression
- + Accurate depiction of the businesswoman's bored expression and phone usage
- − The 'TAXI' text on the cap is slightly garbled
- − Lighting on the car hood is a bit flat compared to the interior
Verdict: FLUX.2 [dev] Flash is the clear winner for its superior adherence to the composition requested, placing the businesswoman correctly in the back seat while FLUX.1 Krea mistakenly added an extra woman and placed the passenger in a less logical position. FLUX.2 [dev] Flash also handled the capybara's paws on the steering wheel with much higher detail and realism.
The Halloween Invitation
Text-to-Image“Vintage gothic Halloween party invitation. Dark parchment poster, spooky border with webs and thorns, central glowing jack-o-lantern, bats, twisted trees, moody night sky. Add elegant gothic title text saying "Halloween Party Invitation", a small scroll banner saying "You are invited to a night of frights", and event details at the bottom: Date: 30.10.2026 Time: 7pm Location: The Arches, NYC Spooky but polished, cinematic lighting, square format.”
AI Judge Analysis
FLUX.1 Krea [dev]
- + Excellent illustrative style with vibrant lighting.
- + Clean, sophisticated border design with intricate cobwebs.
- − Significant text errors including 'Pasty Halloween' and multiple typos in the footer.
- − Text placement is cluttered with the primary date overlapping the pumpkin.
FLUX.2 [dev] Flash
- + Perfect adherence to the requested text for the title and main banner.
- + Atmospheric cinematic lighting that blends the trees and sky more cohesively.
- + The border effectively incorporates thorns as requested by the prompt.
- − Includes some minor garbled text ('Hurk: O369') in the event details section.
- − The parchment texture is less 'vintage' and more of a dark digital overlay.
Verdict: FLUX.2 [dev] Flash is the clear winner due to its superior text rendering, correctly spelling 'Halloween Party Invitation' and the scroll banner content. While FLUX.1 Krea [dev] has a beautiful aesthetic, its failure to generate the correct title and the presence of numerous typos ('a nights tright') makes it unusable as an invitation.
Isometric Miniature Diorama Scenes
Text-to-Image“Create a clear, 45° top-down isometric miniature 3D cartoon scene of Japan's signature dish: sushi, with soft refined textures, realistic PBR materials, gentle lighting, on a small raised diorama base with minimal garnish and plate. Solid light blue background. At top-center: 'JAPAN' in large bold text, 'SUSHI' below it, small flag icon. Perfectly centered, ultra-clean, high-clarity, square format.”
AI Judge Analysis
FLUX.1 Krea [dev]
- + Excellent typography rendering with a playful cartoon style
- + Very clean and minimalist composition that highlights the diorama feel
- + Strong 3D PBR look with realistic texture on the salmon
- − The flag is placed in the scene as an object rather than part of the text layout as implied
- − The white-on-white diorama base and plate lacks contrast
- − Slight misalignment on the flag pole
FLUX.2 [dev] Flash
- + Better adherence to the 'icon' placement of the flag near the text
- + Warm, appealing wood texture on the diorama base
- + More variety in the sushi types while remaining clean
- − Text is a bit plain and lacks the creative 'cartoon' flair requested
- − The wasabi garnish was requested to be minimal, though it is well-rendered
Verdict: Both models followed the prompt exceptionally well, capturing the isometric 3D aesthetic perfectly. FLUX.1 Krea (dev) produced a more stylized, 'cartoon' typography that fits the vibe better, whereas FLUX.2 [dev] Flash handled the text-and-icon layout more accurately and provided satisfying material contrasts with the wood base.
Adorable Baby Animals in Sunny Meadow
Text-to-Image“Hyper-photorealistic scene of fluffy baby animals—a golden retriever puppy, tabby kitten, baby bunny, and red fox kit—with big expressive eyes and ultra-detailed soft fur, playfully chasing butterflies and tumbling together in a lush wildflower meadow, warm golden sunrise light with god rays and dew sparkles, joyful wholesome vibe, 8K masterpiece.”
AI Judge Analysis
FLUX.1 Krea [dev]
- + Natural-looking motion with animals appearing to run and jump
- + Beautiful soft-focus background with realistic bokeh
- + Clean rendering of butterflies
- − Completely missed the 'baby bunny' requirement, providing a second kitten instead
- − Slightly less 'sparkle' on the dew as requested in the prompt
FLUX.2 [dev] Flash
- + Excellent adherence to the prompt including the bunny, kitten, puppy, and fox kit
- + Beautiful dew sparkles and god rays that enhance the atmosphere
- + High detail in the fur textures and expressive eyes
- − Composition feels a bit crowded with animals stacked on top of each other
- − One of the foxes has slightly merged features with the kitten behind it
Verdict: FLUX.2 [dev] Flash is the clear winner as it successfully included all four requested animals, including the bunny which FLUX.1 Krea omitted in favor of a second kitten. While FLUX.1 Krea captured a better sense of motion, FLUX.2 [dev] Flash delivered on the specific details like dew sparkles and the 'wholesome' group dynamic more effectively.
Vintage Cafe Logo
Text-to-Image“Vintage minimalist restaurant logo for "Caffè Florian", retro cloche dome with steam and "Est. 1720" banner, classic typography, warm brown and cream tones, subtle texture on light background, vector emblem style.”
AI Judge Analysis
FLUX.1 Krea [dev]
- + Elegant etching-style illustration
- + Accurate date inclusion in a creative banner
- + Strong vintage aesthetic with textured borders
- − Serious spelling error in the primary name 'FLANOR'IN'
- − Cloche shape is slightly distorted at the top
- − Typography is a bit cluttered and hard to read
FLUX.2 [dev] Flash
- + Perfect text rendering of 'CAFFÈ FLORIAN'
- + Clean, scalable vector logo composition
- + Accurate cloche dome illustration with subtle steam
- − Slightly less 'vintage texture' compared to Model A
- − Composition is very safe and traditional
Verdict: FLUX.2 [dev] Flash is the clear winner because it correctly spells the name of the establishment, whereas FLUX.1 Krea [dev] hallucinates the text as 'FLANOR'IN'. While FLUX.1 Krea [dev] has a beautiful illustrative texture, the precision and utility of FLUX.2 [dev] Flash make it a much better choice for a logo design task.
Apollo 11: Journey to Tranquility
Text-to-Image“Create a clean, modern vector infographic poster about the Apollo 11 mission. NASA-inspired palette (navy, white, muted red, light gray). Flat-vector style, crisp lines, consistent iconography, subtle gradients only. Steps (stop at landing): 1. Launch (Saturn Vicon) 2. Earth Orbit (Earth + orbit ring icon) 3. Translunar (trajectory arc icon) 4. Lunar Orbit (Moon + orbit ring icon) 5. Descent (lunar module descending icon) 6. Landing (lunar module on the surface icon) Small supporting elements (minimal text): • Crew strip: three silhouette icons with only last names: Armstrong, Aldrin, Collins. • Landing site marker: Moon pin labeled "Tranquility" only. Layout constraints: generous margins, large readable labels, clean background with subtle stars. Vector-only, print-poster look, high resolution.”
AI Judge Analysis
FLUX.1 Krea [dev]
- + Clean vector aesthetic with consistent, bold shapes.
- + High clarity on primary headings and numbered steps.
- − Failed to include the specific icons requested for most steps, substituting them with generic astronaut figures.
- − Included a planet with rings (Saturn-like) for the 'Launch' phase, which is factually and contextually incorrect.
- − Text labels are garbled and the sequence is confusing.
FLUX.2 [dev] Flash
- + Highly accurate adherence to the specific iconography requested (Saturn V, Lunar Module, orbit rings).
- + Excellent typography with legible step labels and a clear hierarchy.
- + Creative addition of the Apollo 11 crew portraits in the requested palette.
- − Minor overlapping of text on the 'Launch' graphic.
- − The layout is a bit crowded compared to the minimalism of Model A.
Verdict: FLUX.2 [dev] Flash followed the complex instructional prompt much better than FLUX.1 Krea [dev], accurately depicting the specific sequence of events and required icons like the Saturn V and Lunar Module. FLUX.1 Krea [dev] failed to generate the correct icons, instead placing a ringed planet at step one and using generic human figures that don't fit the mission narrative.
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