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
Stable Diffusion 3.5 Medium
#58 of 62 in Text-to-Image
Where the votes landed
FLUX.1 Krea [dev]
100.0%
win rate
Ties
0.0%
Stable Diffusion 3.5 Medium
0.0%
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]
- + Perfect adherence to spatial instructions including the sphere inside and the book on top.
- + Superior photorealism with convincing caustics, reflections, and soft window lighting.
- + High aesthetic quality with a well-balanced composition and realistic depth of field.
- − The plant is more behind the book than visible through the glass cube itself.
Stable Diffusion 3.5 Medium
- + The plant is clearly visible through the glass as requested.
- + Good lighting contrast on the sphere.
- − Failed spatial instruction: placed the red book inside the cube rather than on top.
- − The sphere appears to be floating mid-air above the red platform.
- − Lower overall image quality with noticeable digital artifacts and less realistic textures.
Verdict: FLUX.1 Krea [dev] followed almost every prompt detail perfectly, including the complex spatial arrangement of objects. It produced a highly professional photographic result with realistic light behavior. In contrast, Stable Diffusion 3.5 Medium failed on the core spatial instruction by placing the book inside the cube and exhibited lower overall visual fidelity.
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 realization of motion blur on the background vehicles.
- + High facial detail and realism in the subject's skin texture.
- + Strong composition that makes the red bicycle pop against the grey street.
- − Lacks significant wetness on the man's clothing despite the rain.
- − The bicycle is being held rather than repaired.
Stable Diffusion 3.5 Medium
- + Successfully captures a 'filmic' grain and gritty street photography aesthetic.
- + Good interaction between the subject and the bike in a hunching posture.
- + Reflections and water saturation on the pavement are very realistic.
- − Anatomical issues with the man's hands merging into the bicycle handles.
- − Muddled details on the bicycle's mechanical parts.
- − Does not effectively demonstrate the requested motion blur on the cars.
Verdict: FLUX.1 Krea (dev) produced a much cleaner and more anatomically correct image with superior facial detail and effective motion blur as requested. While Stable Diffusion 3.5 Medium captured a more evocative film-like atmosphere, it suffered from significant structural artifacts in the hands and bicycle frame.
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 engraving detail on the plate armor
- + Highly realistic cinematic lighting and atmosphere
- + Superior rendering of leather and cloth textures
- − The braids are very subtle and placed high on the head
- − The beads in the hair are small and less noticeable than the prompt implies
Stable Diffusion 3.5 Medium
- + Successful inclusion of multiple braids and beads
- + Very lifelike and expressive eyes
- + Clear bokeh sparks in the background
- − The armor engravings look slightly flatter and less metallic than Model A
- − Artificial-looking sharp point on the center of the chest piece
Verdict: FLUX.1 Krea delivers a much more convincing cinematic image with incredible texture and lighting that perfectly fits the 'battle-worn' description. While Stable Diffusion 3.5 Medium followed the hair-braiding instructions more literally, its overall composition and armor rendering feel slightly more artificial and less cohesive.
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]
- + Excellent typographic hierarchy with clear section headers
- + Realistic and appetizing food photography that looks professional
- + Clean, balanced layout that follows graphic design principles for a real menu
- − Repeats the 'Appetizers' heading twice
- − Gibberish text in the item descriptions
Stable Diffusion 3.5 Medium
- + Features a wider variety of food images
- + Good use of white space across the page
- − Disorganized layout with images and text floating without a strong grid
- − Poor text rendering and inconsistent font sizes
- − The food images are small and lack clarity compared to Model A
Verdict: FLUX.1 Krea [dev] produces a much more professional and realistic menu design that adheres closely to the 'modern minimalist' prompt, featuring a strong vertical layout and high-quality food photography. Stable Diffusion 3.5 Medium struggles with the grid structure and typography, resulting in a cluttered and less cohesive design.
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]
- + Excellent photorealistic texture on the bun and patty.
- + Clear, professional layout of the requested text elements.
- + Good 'exploded' sense with the top bun and debris floating.
- − Failed to place the price within a starburst as requested.
- − The 'exploded' effect is limited mostly to the top bun.
Stable Diffusion 3.5 Medium
- + Accurately placed the price within a starburst element.
- + Stronger sense of 'glow' and fiery atmosphere in the background.
- − Failed to create an 'exploded' burger, keeping all components stacked.
- − Formatting of the 'LIMITED TIME ONLY' text is slightly condensed and harder to read.
- − Lower level of detail in the food textures compared to the competitor.
Verdict: FLUX.1 Krea produced a much more professional-looking advertisement with superior photorealistic textures and a better attempt at the 'exploded' burger concept, despite missing the starburst for the price. Stable Diffusion 3.5 Medium followed the starburst instruction but failed the primary dynamic request of having the burger components suspended in mid-air.
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]
- + Excellent text legibility and accuracy for most of the prompt.
- + Very realistic chalkboard texture and lighting.
- + Clean, professional composition that follows the requested cursive/print mix.
- − Contains minor spelling hallucinations like 'Gruffle' and 'Lcoman'.
- − Text across the board looks slightly more like a digital font than natural chalk variations.
Stable Diffusion 3.5 Medium
- + Captures a more authentic 'chalk texture' with visible dust and rough edges.
- + Includes creative flourished lettering.
- − Severe spelling errors throughout the entire board.
- − Completely fails the specific date and price points requested in the prompt.
- − The layout is cluttered and incoherent compared to the prompt's request.
Verdict: FLUX.1 Krea (dev) significantly outperformed Stable Diffusion 3.5 Medium by producing legible, mostly accurate text that followed the specific menu items and date requested. While Stable Diffusion 3.5 Medium captured a more convincing physical chalk texture, it failed at basic word construction and prompt adherence, resulting in a board filled with gibberish.
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 anatomical details on the horse
- + Cinematic lighting with a clear sense of depth and scale
- + High texture quality on the spacesuit and horse fur
- − Completely failed the semantic instruction 'horse on top'
- − Bizarre mechanical merging between the horse's torso and space equipment
Stable Diffusion 3.5 Medium
- + Clear, vibrant composition with an expansive starfield
- + Good use of the atmosphere curvature to frame the image
- − Failed the semantic instruction 'horse on top'
- − Anatomical issues with the horse's legs and the astronaut's positioning/limbs
- − Lower overall detail and realism compared to the competitor
Verdict: Both models failed the specific 'horse on top' spatial instruction, providing the traditional astronaut-on-horse interpretation instead. However, FLUX.1 Krea [dev] is the superior image due to its significantly higher visual fidelity, realistic lighting, and more convincing textures compared to the anatomical distortions present in Stable Diffusion 3.5 Medium.
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 photorealism in lighting and texture.
- + Correctly places the businesswoman in the back seat using her phone as requested.
- + Realistic capybara anatomy and cap integration.
- − Includes an extra person in the passenger seat not mentioned in the prompt.
Stable Diffusion 3.5 Medium
- + Detailed capybara fur and whiskers.
- + Good composition with the capybara front and center.
- − Missed the detail about the businesswoman looking at her phone.
- − The businesswoman appears to be sharing the front seat area or awkwardly positioned in a narrow car.
- − Capybara paws look like sharp claws rather than the requested placement on a steering wheel.
Verdict: FLUX.1 Krea [dev] followed the specific character instructions much better, correctly including the woman on her phone in the back seat, whereas Stable Diffusion 3.5 Medium missed the phone and positioned the woman poorly. FLUX.1 Krea [dev] also achieved a more convincing photorealistic look for a New York taxi interior.
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]
- + Elegant composition with high-quality cinematic lighting.
- + Includes detailed scroll banners as requested.
- + Clean, professional-looking illustration style with a clear focal point.
- − Several spelling errors in the text including 'Pasty Halloween' and 'nights tright'.
- − Repetition of words like 'are are' in the bottom text.
Stable Diffusion 3.5 Medium
- + Stronger adherence to the 'parchment' texture requirement.
- + Includes the requested twisted trees and moody sky successfully.
- + Fairly accurate layout for a physical poster.
- − Significant spelling failures and garbled text throughout the invitation.
- − The placement of jack-o-lanterns in the branches is less intuitive than a central one.
- − Lower overall visual polish compared to Model A.
Verdict: FLUX.1 Krea (dev) produces a much more aesthetically pleasing and 'polished' invitation with superior lighting and composition, though it struggles with exact spelling. Stable Diffusion 3.5 Medium captures the 'parchment' and 'twisted trees' prompts well but fails significantly on text legibility and artistic cohesion. FLUX.1 Krea (dev) is the likely winner for its professional finish and closer adherence to the central layout requested.
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 text rendering with clean, bold typography.
- + High-quality 3D miniature aesthetic with realistic PBR material textures on the salmon.
- + Included all requested elements including the flag icon and the raised diorama base.
- − The shadow length is a bit long for a minimalist graphic.
Stable Diffusion 3.5 Medium
- + Good material rendering on the nori and roe.
- + Clean isometric 45-degree angle.
- − Failed to include the flag icon.
- − Text hierarchy is backwards, with 'SUSHI' being larger than 'JAPAN'.
- − Missing the requested 'raised diorama base', placing the plate directly in space.
Verdict: FLUX.1 Krea followed the prompt instructions much more accurately, including all layout elements like the diorama base and the flag icon while maintaining correct text hierarchy. Stable Diffusion 3.5 Medium produced a nice render of the food itself but failed several key prompt requirements such as the specific icon and the base structure.
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]
- + Excellent fur texture rendering and soft lighting.
- + Dynamic composition that suggests movement and playfulness.
- + Accurate representation of the requested animals, including butterflies.
- − Included two kittens instead of one kitten and one bunny.
Stable Diffusion 3.5 Medium
- + Saturated colors and cheerful atmosphere.
- + Good central focus on the animal characters.
- − Failed significantly on animal count and identification; missing two of the four requested animals.
- − Highly stylized/illustrative look rather than the requested hyper-photorealism.
- − The central animal is an ambiguous kitten-bunny hybrid with odd anatomy.
Verdict: FLUX.1 Krea produced a superior image with high-quality textures and realistic lighting, though it replaced the bunny with a second kitten. Stable Diffusion 3.5 Medium struggled with both the prompt's count and the request for photorealism, resulting in an illustrative image with anatomical errors.
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]
- + Excellent vector illustration style with clean lines
- + Highly legible and accurate date text (Est. 1720)
- + Great use of texture and distressed borders for a vintage feel
- − Spelling error in the main name ('Flanelin' instead of 'Florian')
Stable Diffusion 3.5 Medium
- + Closer spelling of the name ('Florrian')
- + Strong vintage typographic hierarchy
- + Includes additional cafe elements like the coffee cup
- − Significant spelling error in the date ('Est 170' instead of '1720')
- − Cluttered composition compared to a minimalist logo
- − Poorly rendered steam detail
Verdict: FLUX.1 Krea [dev] produced a much cleaner and more professional vector emblem that perfectly matches the 'minimalist' and 'cloche' requirements, despite a spelling error in the name. Stable Diffusion 3.5 Medium struggled with the date and created a more cluttered, less balanced design that lacks the requested refined vector feel.
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]
- + Strong typography for the main title with clear numerical sequencing.
- + Includes distinct, recognizable flat-vector illustrations like astronauts and a lunar map pin.
- + Uses the requested NASA-inspired color palette effectively.
- − The sequence of steps is illogical, mislabeling icons (e.g., Saturn as step 1 instead of a rocket).
- − Text descriptions for individual steps are garbled or missing.
- − Failed to include specific requested icons like the Saturn V or the Lunar Module.
Stable Diffusion 3.5 Medium
- + Successfully lists all six requested stages in a vertical infographic format.
- + Correctly interprets the 'Descent' and 'Landing' headers for the final steps.
- + Sophisticated vector-style aesthetic with consistent line work and muted color palette.
- − Iconography for the steps is inconsistent and does not clearly represent the objects described (e.g., Saturn V or Moon orbit).
- − Text contains significant 'AI gibberish' throughout the subtitles.
- − Composition is crowded and the large celestial body on the right lacks context.
Verdict: Both models struggled with the specific technical requirements of the icons, but for different reasons. FLUX.1 Krea produced much cleaner, more legible individual assets but failed completely on the infographic logic and specific objects like the Saturn V. Stable Diffusion 3.5 Medium followed the structure of a six-step infographic much better, but the visual icons are abstract and the text is heavily garbled.
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Stability AI's 2.5-billion parameter Multimodal Diffusion Transformer with improvements (MMDiT-X) text-to-image model optimized for consumer hardware, featuring improved image quality, typography, and complex prompt understanding