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FLUX.1 Krea [dev] Black Forest Labs FLUX1.1 [pro] Ultra Black Forest Labs

Settled by community votes across 13 shared challenges, with an AI judge weighing in on each.

FLUX.1 Krea [dev]

18.8 arena score

#48 of 62 in Text-to-Image

Skill signature · Text-to-Image

FLUX1.1 [pro] Ultra

18.5 arena score

#49 of 62 in Text-to-Image

Vote tally

Where the votes landed

FLUX.1 Krea [dev]

0%

win rate

Ties

0%

FLUX1.1 [pro] Ultra

0%

win rate

Shared challenges 13

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.”

FLUX.1 Krea [dev]
FLUX1.1 [pro] Ultra

AI Judge Analysis

FLUX.1 Krea [dev]

  • + Excellent handle on photorealistic lighting and depth of field
  • + Realistic refraction and reflection within the glass cube and sphere
  • + Strong compositional mood with soft cinematic lighting
  • The sphere is quite large and dark, bordering on navy rather than a 'small blue' sphere
  • The glass cube has a very thick, heavy base that makes it look more like a vase

FLUX1.1 [pro] Ultra

  • + Perfect adherence to object scale, accurately depicting a 'small' blue sphere
  • + Exceptional clarity and sharpness in the textures of the book and glass edges
  • + Bright, clean aesthetic with very realistic glass transparency
  • The blue sphere appears to be floating mid-air inside the cube without support
  • The lighting is a bit more flat and clinical compared to the atmospheric lighting in Model A

Verdict: FLUX1.1 [pro] Ultra followed the prompt instructions for scale more accurately, specifically with the 'small' sphere and the proportions of the book relative to the cube. While FLUX.1 Krea [dev] produced a more artistic and moody photograph with superior lighting, FLUX1.1 [pro] Ultra's technical rendering of glass edges and fine text on the book spine makes it the more impressive output.

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.”

FLUX.1 Krea [dev]
FLUX1.1 [pro] Ultra

AI Judge Analysis

FLUX.1 Krea [dev]

  • + Excellent depiction of falling rain and wet pavement texture
  • + Realistic skin and hair texture on the subject
  • + Captures an organic, candid street-photography feel
  • Anatomical failure with the hands (multiple extra fingers)
  • Lacks the requested motion blur on the background cars

FLUX1.1 [pro] Ultra

  • + Strong adherence to the motion blur requirement for passing cars
  • + High visual clarity and vibrant reflections
  • + Better hand/finger rendering compared to the competitor
  • The bike geometry is nonsensical with the frame passing through the man's leg
  • The rain is barely visible, mostly just appearing as wet ground
  • Lighting on the man is a bit flat and looks slightly composited

Verdict: FLUX.1 Krea [dev] produces a much more atmospheric and realistic texture for rain and skin, but fails significantly on hand anatomy. FLUX1.1 [pro] Ultra better captures the specific request for motion blur on passing cars, but contains a glaring structural error where the bicycle frame clips through the subject's leg. FLUX.1 Krea [dev] is slightly preferred for its more authentic 'candid photo' aesthetic despite the hand artifacts.

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.”

FLUX.1 Krea [dev]
FLUX1.1 [pro] Ultra

AI Judge Analysis

FLUX.1 Krea [dev]

  • + Excellent adherence to all prompt details including braided hair with beads and intricate plate engraving.
  • + Superior lighting and atmosphere with warm torchlight reflections and high-quality bokeh sparks.
  • + Incredible texture detail on the skin, leather straps, and the knitted wool underlayer.
  • The blood/dirt on the forehead looks slightly more like a skin condition or superficial wound rather than general battle dirt.

FLUX1.1 [pro] Ultra

  • The image is a completely black canvas, indicating a total failure to generate or a rendering error.

Verdict: FLUX.1 Krea [dev] followed the prompt with extreme precision, delivering a cinematic portrait with rich textures on the armor and clothing as requested. FLUX1.1 [pro] Ultra failed to produce an image, resulting in a blank black output. Consequently, FLUX.1 Krea [dev] is the winner by default and for its exceptional quality.

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.”

FLUX.1 Krea [dev]
FLUX1.1 [pro] Ultra

AI Judge Analysis

FLUX.1 Krea [dev]

  • + Clean and professional layout that resembles an actual usable tabletop menu.
  • + Excellent grid alignment of food photography which strictly follows the prompt.
  • + Logical sectioning (Appetizers, Maines) with clear pricing structure.
  • Text rendering is jagged and contains nonsense characters.
  • Slightly repetitive food photography with multiple similar pizzas.

FLUX1.1 [pro] Ultra

  • + High resolution and vibrant color palette with a creative presentation.
  • + Strong use of bold sans-serif fonts as requested.
  • + Visually appealing food photography with good clarity.
  • The layout is cluttered and contains confusing overlapping elements like 'MENU ES!'.
  • The text content is largely nonsensical and poorly organized for a real menu.
  • Background is not white as requested, but rather orange/coral.

Verdict: FLUX.1 Krea [dev] followed the layout instructions much better, producing a clean, grid-based menu that looks professional and realistic despite some text artifacts. FLUX1.1 [pro] Ultra created a more vibrant and artistic image, but it failed the background color requirement and lacked the organized, minimalist structure requested by the prompt.

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.”

FLUX.1 Krea [dev]
FLUX1.1 [pro] Ultra

AI Judge Analysis

FLUX.1 Krea [dev]

  • + Excellent typography rendering with no spelling errors.
  • + Clean, professional ad layout with logical text placement.
  • + High photorealism on the burger textures and ingredients.
  • Missed the 'fiery, glowing effect' for the text as specified in the prompt.
  • The 'exploded' effect is less dynamic than Model B, appearing more like a layered stack.

FLUX1.1 [pro] Ultra

  • + Successfully applied the 'fiery, glowing effect' to the main title.
  • + Highly dynamic 'exploded' composition with scattered ingredients and debris.
  • + Includes extra details like embers and flying nuggets that add to the sense of motion.
  • Failed to render the price in a 'starburst' as requested.
  • The burger structure is somewhat confusing with three patties instead of a traditional exploded single burger.
  • Small artifacts present in the fine print at the bottom.

Verdict: FLUX1.1 [pro] Ultra followed the stylistic cues for the typography much better, capturing the fiery glow requested, though it missed the starburst requirement. FLUX.1 Krea [dev] produced a more realistic looking product and cleaner text, but it overall felt more like a standard food ad rather than the high-energy, magical scene described in the prompt. FLUX1.1 [pro] Ultra is the likely winner for its superior sense of motion and adherence to the 'fiery' aesthetic.

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.”

FLUX.1 Krea [dev]
FLUX1.1 [pro] Ultra

AI Judge Analysis

FLUX.1 Krea [dev]

  • + Excellent typography style that mimics realistic chalk cursive accurately.
  • + Maintains a clean and organized layout that feels authentic to a café setting.
  • + Text legibility is high with smooth, consistent rendering of the cursive letters.
  • Hallucinates extra lines and nonsense words like 'Gruffle Mushroom' and 'Chvcuations'.
  • Fails to include the full list of requested items, skipping the Brown Butter detail for the last item.

FLUX1.1 [pro] Ultra

  • + Successfully captures the requested 'Brown Butter Chocolate Chip Cookies' item.
  • + Includes more environmental context like the café background and lighting.
  • + Uses a more varied, blocky handwriting style that fits the 'handwritten' requirement.
  • Significant repetition and 'stuttering' issues with text (e.g., 'fresh fresh daily', 'cookies cookies').
  • Poor spelling and nonsensical strings of letters such as 'friistratnisnios'.
  • The text layout is cluttered and suffers from overlapping lines.

Verdict: FLUX.1 Krea [dev] produces much more visually appealing and realistic chalk textures, and its 'handwriting' looks genuinely human-made, though it hallucinates additional menu items not requested. While FLUX1.1 [pro] Ultra attempts more of the prompt's specific text, it suffers from severe repetition and quality issues in the text rendering, making FLUX.1 Krea [dev] the more successful overall image.

The Reversed Rodeo

Text-to-Image

“Horse riding astronaut in space — horse on top, not vice versa. Surreal, highly detailed, cinematic.”

FLUX.1 Krea [dev]
FLUX1.1 [pro] Ultra

AI Judge Analysis

FLUX.1 Krea [dev]

  • + Excellent visual quality and lighting on the horse's coat.
  • + Cinematic atmosphere with strong contrast against the Earth.
  • Failed the negative constraint; the astronaut is riding the horse, not the other way around.
  • Anatomy of the horse's hind legs is slightly distorted.

FLUX1.1 [pro] Ultra

  • + Dynamic composition with a sense of movement in the mane and tail.
  • + Highly detailed background featuring celestial bodies and satellites.
  • Failed the negative constraint; the astronaut is riding the horse.
  • The bridle/tack has inconsistent strap logic near the astronaut's hands.

Verdict: Both models failed the specific prompt instruction for the horse to be on top of the astronaut, instead defaulting to the common trope of an astronaut riding a horse. FLUX.1 Krea [dev] provided a more realistic and cinematic lighting profile, while FLUX1.1 [pro] Ultra created a more expansive and visually busy space environment.

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.”

FLUX.1 Krea [dev]
FLUX1.1 [pro] Ultra

AI Judge Analysis

FLUX.1 Krea [dev]

  • + Correctly places the capybara in the driver's seat and the passenger in the back.
  • + Executes the 'bored' expression for the passenger perfectly.
  • + High fur detail on the capybara and clear text on the hat.
  • Includes a third person/ghostly face in the front passenger seat that was not requested.
  • The capybara's paws are rendered more like human hands with fur rather than natural capybara paws.

FLUX1.1 [pro] Ultra

  • + Excellent photographic quality and lighting coherence.
  • + The capybara's profile is very realistic and matches the 'calm' facial expression prompt.
  • + Beautiful background bokeh of Manhattan streets.
  • Failed to place the passenger in the back seat; she is sitting in the front next to the driver.
  • The passenger is holding the steering wheel despite the capybara being the driver.
  • The perspective of the car interior is physically impossible/confused regarding where the dashboard and seats are.

Verdict: FLUX.1 Krea [dev] followed the complex spatial instructions much better, correctly placing the capybara in the driver's seat and the human in the back, despite adding an extra unexplained passenger. FLUX 1.1 [pro] Ultra produced a more aesthetically pleasing image but failed significantly on the layout, placing the passenger in the front seat holding a second steering wheel.

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.”

FLUX.1 Krea [dev]
FLUX1.1 [pro] Ultra

AI Judge Analysis

FLUX.1 Krea [dev]

  • + Atmospheric cinematic lighting with good internal glow on the jack-o-lantern
  • + Intricate gothic border involving webs and filigree
  • Several major spelling errors including 'Pasty Halloween' and 'Tright'
  • Text layout is cluttered and difficult to read

FLUX1.1 [pro] Ultra

  • + Excellent text rendering with near-perfect spelling for the event details
  • + Stronger thematic adherence to the 'dark parchment' and 'thorns' prompt elements
  • + Clean, professional layout that functions well as an invitation
  • Repetitive text phrases in the middle of the poster
  • The jack-o-lantern has a slight 'pasted-on' look compared to the background

Verdict: FLUX1.1 [pro] Ultra is the clear winner due to its superior text rendering and layout organization, which are critical for a party invitation. While FLUX.1 Krea [dev] captured a moodier atmosphere, its severe spelling errors and disjointed text placement make it unusable for its intended purpose.

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.”

FLUX.1 Krea [dev]
FLUX1.1 [pro] Ultra

AI Judge Analysis

FLUX.1 Krea [dev]

  • + Excellent adherence to the 'minimal garnish' instruction
  • + Clean and bold text rendering with a central flag icon
  • + Strong isometric 45-degree perspective
  • The sushi texture looks slightly like plastic compared to the salmon in image B
  • Composition is a bit sparse with a very large flag relative to the food

FLUX1.1 [pro] Ultra

  • + Beautifully detailed PBR materials with realistic subsurface scattering on the salmon
  • + Sophisticated layout with high aesthetic appeal
  • + Professional typographic integration of the flag icon within the text line
  • Ignored the 'minimal garnish' instruction by adding various side dishes and a plant
  • Included a strange bug-like artifact on the wooden board

Verdict: FLUX.1 Krea [dev] followed the 'minimal' aspect of the prompt much better, resulting in a cleaner icon-like image. However, FLUX1.1 [pro] Ultra produced significantly higher quality textures and a more professional layout, despite adding extraneous elements that were not requested.

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.”

FLUX.1 Krea [dev]
FLUX1.1 [pro] Ultra

AI Judge Analysis

FLUX.1 Krea [dev]

  • + Successfully includes the specific butterfly species (Monarch-like) with high detail
  • + Captures a sense of motion with the 'tumbling' and running poses requested
  • + Distinctly renders the different fur textures for each animal type
  • Failed to include the baby bunny, substituting it with a second kitten
  • The lighting feels a bit more like a flat studio overlay than natural god rays

FLUX1.1 [pro] Ultra

  • + Successfully included all four requested animals, including the bunny
  • + Beautiful bokeh and lighting effects that create a magical atmosphere
  • + Excellent expressive eyes and cohesive visual style
  • The animals are largely static and looking up rather than 'tumbling together'
  • The butterfly wings are a bit simplified and glowy rather than realistic

Verdict: FLUX1.1 [pro] Ultra is the clear winner because it followed the instructions to include all four animals (puppy, kitten, fox, and bunny), whereas FLUX.1 Krea [dev] missed the bunny entirely. While FLUX.1 Krea [dev] captured the energy of the prompt better, FLUX1.1 [pro] Ultra's visual quality and literal adherence make for a more successful masterpiece.

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.”

FLUX.1 Krea [dev]
FLUX1.1 [pro] Ultra

AI Judge Analysis

FLUX.1 Krea [dev]

  • + Excellent vintage woodcut/etching art style
  • + Beautiful textured paper background effect
  • + High-quality vector aesthetic with delicate linework
  • Failed the primary text spelling as 'Café Flanelín'
  • Nonsense text at the bottom center

FLUX1.1 [pro] Ultra

  • + Stronger 'vector emblem' composition with professional framing
  • + Bold, readable typography with high contrast
  • + Correctly included all requested elements like the steam and date banner
  • Failed the primary text spelling as 'Caffé Framilian'
  • Slightly less 'minimalist' than the other version

Verdict: Both models failed to use the exact name 'Caffè Florian', with FLUX.1 Krea [dev] producing 'Flanelín' and FLUX1.1 [pro] Ultra producing 'Framilian'. FLUX1.1 [pro] Ultra is the likely winner because its composition feels more like a finished logo design, and its spelling error is slightly closer to the source text.

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.”

FLUX.1 Krea [dev]
FLUX1.1 [pro] Ultra

AI Judge Analysis

FLUX.1 Krea [dev]

  • + Successfully captures the requested navy, white, and red color palette
  • + Features clear, bold typography for the main title
  • + Includes relevant space-themed icons in a flat vector style
  • The sequence of steps is non-linear and confusing to follow
  • Step 1 logic is flawed as it uses a ringed planet (Saturn) rather than the Saturn V rocket icon requested
  • Text below the secondary steps is garbled and unreadable

FLUX1.1 [pro] Ultra

  • + Strong professional layout that looks like a real infographic poster
  • + Better adherence to the 'clean, modern vector' aesthetic with distinct hierarchy
  • + Includes more readable text blocks and descriptive headers
  • The numbering sequence is disorganized (1, 1, 2, 2, 5, 5, 6)
  • Failed to include the specific icons for each step (e.g., Earth orbit ring or lunar module)
  • The text throughout remains largely nonsensical 'Lorem Ipsum' style gibberish

Verdict: FLUX1.1 [pro] Ultra is the clear winner for its superior layout and professional design, accurately capturing the 'infographic poster' aesthetic much better than its counterpart. While FLUX.1 Krea produced more distinct icons, it failed to arrange them in a logical flow, whereas FLUX1.1 [pro] Ultra created a sophisticated composition that, despite numbering errors, feels like a cohesive information design.

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