Black Forest Labs' 12-billion parameter multimodal flow transformer for in-context image generation and editing with character consistency, typography handling, and commercial-ready quality
Settled by community votes across 13 shared challenges, with an AI judge weighing in on each.
FLUX.1 Kontext [pro]
#41 of 62 in Text-to-Image
Stable Diffusion 3.5 Medium
#57 of 62 in Text-to-Image
Where the votes landed
FLUX.1 Kontext [pro]
0%
win rate
Ties
0%
Stable Diffusion 3.5 Medium
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 Kontext [pro]
- + Perfect adherence to spatial relationships defined in the prompt.
- + Highly realistic lighting and depth of field.
- + Consistent textures for the glass, felt-like sphere, and wooden table.
- − The plant in the background is slightly out of focus, making the 'partially visible through the glass' detail less distinct than it could be.
Stable Diffusion 3.5 Medium
- + Good color saturation and clear glass rendering.
- + The sphere and book are clearly represented within the frame.
- − Failed the spatial request by putting the red book inside the cube and the sphere on top of the book.
- − The composition is missing the 'behind the cube' aspect for the plant, as the leaves are in front/to the side.
- − Lower photographic realism and odd cropping of the table.
Verdict: FLUX.1 Kontext [pro] followed every spatial instruction perfectly, placing the sphere inside the cube and the book on top as requested. Stable Diffusion 3.5 Medium failed to understand the nesting instructions, instead placing the book inside the cube as a platform for the sphere. FLUX.1 Kontext [pro] also offers a much higher level of visual realism and consistent world-building.
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 Kontext [pro]
- + Excellent character detail with natural skin texture and expression.
- + High-quality soft lighting and effective shallow depth of field.
- + Accurate representation of the 'light rain' atmosphere.
- − The man appears to be riding or holding the bike rather than repairing it.
- − Multiple brake lines are messy and anatomically incorrect for the bike.
Stable Diffusion 3.5 Medium
- + Better captures the 'repairing' aspect of the prompt with the man hunched over the bike.
- + Good use of vibrant red reflections on the wet pavement.
- + Composition feels more 'candid' with a wider street view.
- − Anatomical issues with the man's hands and face due to the distance/resolution.
- − Visual artifacts present in the background car and raining streaks.
- − The bike's geometry is slightly warped.
Verdict: FLUX.1 Kontext [pro] produces a much more realistic and high-fidelity image of the person, though he is not strictly 'repairing' the bike. Stable Diffusion 3.5 Medium captures the specific action and wet pavement reflections better but suffers from lower visual quality and significant distortions in the character's face and hands.
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 Kontext [pro]
- + Excellent realism in skin texture and facial hair
- + Sophisticated cinematic lighting that feels integrated with the environment
- + Highly detailed and believable engraving on the armor
- − The 'small beads' in the hair are represented as simple metal bands
Stable Diffusion 3.5 Medium
- + Intricate armor engraving and highly detailed leather strap textures
- + More literal interpretation of 'multiple' braids in the hair
- + Stronger presence of bokeh sparks in the background
- − Skin texture appears somewhat plastic and over-processed compared to the other image
- − The torchlight reflection on the nose and cheek is a bit harsh and lacks subtlety
- − Missing the requested beads within the braids
Verdict: FLUX.1 Kontext [pro] delivers a much more believable and cinematic portrait with superior skin rendering and lifelike eyes. While Stable Diffusion 3.5 Medium captures more specific armor details like the leather straps, its overall lighting and skin textures feel artificial in comparison.
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 Kontext [pro]
- + Excellent text legibility and clean sans-serif font choices.
- + High-quality, professional food photography that looks appetizing and realistic.
- + Strong layout with clear, logical sections for appetizers, pizza, and mains.
- − The 'grid' format is asymmetric rather than a standard uniform grid.
- − The text content is nonsensical gibberish despite looking visually correct.
Stable Diffusion 3.5 Medium
- + Captures the 'grid' layout more literally with numerous small images.
- + Includes more food photos spanning a wider variety of dishes.
- − Low visual quality with significant artifacts in the text rendering.
- − The layout feels cluttered and over-crowded, losing the 'minimalist' aesthetic.
- − The image quality of the food photos is lower and less consistent than the competitor.
Verdict: FLUX.1 Kontext [pro] produced a far more professional and usable design that perfectly captures the 'modern minimalist' and 'bold sans-serif' requirements. While Stable Diffusion 3.5 Medium attempted a more complex grid, it failed significantly in text rendering and overall image clarity. FLUX.1 Kontext [pro] is the clear winner for its superior composition and realistic photographic quality.
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 Kontext [pro]
- + Excellent typography with a glowing, fiery aesthetic that perfectly matches the prompt.
- + Superior photorealistic detail on food textures like meat and melted cheese.
- + High-quality composition with embers and coals creating a cohesive atmospheric effect.
- − The price element is duplicated unnecessarily at the bottom of the image.
- − Missing the specific 'starburst' shape requested for the price.
Stable Diffusion 3.5 Medium
- + Successfully included the 'starburst' element for the price.
- + Good background fire effect with high contrast.
- − The burger is not truly 'exploded' as it remains largely stacked.
- − The text rendering for 'LIMITED TIME ONLY' is slightly garbled and lacks the fiery glow effect.
- − Overall composition feels flatter and less professional than the competitor.
Verdict: FLUX.1 Kontext [pro] delivered a much higher quality advertisement with professional-grade typography and stunning food photography details that capture the requested 'fiery' aesthetic perfectly. While Stable Diffusion 3.5 Medium followed the starburst instruction, its exploded burger was less dynamic and its text rendering was significantly weaker.
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 Kontext [pro]
- + Excellent text rendering with near-perfect spelling and punctuation.
- + Convincing chalk texture and handwritten feel with natural stroke variations.
- + Accurately follows the prompt's layout and content instructions.
- − Small typo in the bottom fine print ('ous gluten tree' instead of 'about gluten free').
- − The handwriting is a bit more 'neat block' than 'elegant cursive' for the title.
Stable Diffusion 3.5 Medium
- + Captures a more artistic, flourished chalkboard style.
- + The wood frame and background wall look very realistic.
- − Severe orthographic failures; almost all words contain nonsensical characters or spelling errors.
- − Failed to follow the date instructions (rendered 2027 instead of 2026).
- − The layout is cluttered and does not cleanly separate the requested items.
Verdict: FLUX.1 Kontext [pro] is much better in this comparison, as it successfully rendered almost all the requested text with high legibility and realistic chalk textures. Stable Diffusion 3.5 Medium struggled significantly with spelling and coherence, producing a board that looked visually interesting but was largely unreadable and did not follow the prompt's content requirements.
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 Kontext [pro]
- + Perfectly adheres to the challenging role-reversal instruction by showing a horse on top of an astronaut.
- + Features a high degree of surrealism by giving the astronaut horse-like features such as hooves.
- + Excellent cinematic lighting and texture on the spacesuit and horse fur.
- − The small miniature astronaut riding the horse creates a confusing layered scale.
- − The background space junk is slightly distractingly sharp compared to the main subject.
Stable Diffusion 3.5 Medium
- + High visual clarity and bright colors.
- + Good detail on the Earth's surface in the background.
- − Fails the primary prompt instruction by placing the astronaut on top of the horse.
- − Significant anatomy issues with the horse's legs appearing disjointed or multiplied.
- − Lacks the 'surreal' quality requested, opting for a standard sci-fi interpretation.
Verdict: FLUX.1 Kontext [pro] successfully interpreted the difficult spatial prompt 'horse on top, not vice versa', creating a truly surreal and high-quality image. Stable Diffusion 3.5 Medium failed the core prompt instruction and exhibited major anatomical errors in the horse's legs.
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 Kontext [pro]
- + Excellent fur texture rendering and realistic lighting from outside streetlights.
- + Perfectly captures the 'bored' expression of the passenger in the back.
- + Anatomically plausible capybara paws on the steering wheel.
Stable Diffusion 3.5 Medium
- + Creative composition with a front-facing perspective.
- + Clearly captures the yellow jacket and taxi driver cap requested.
- + Vibrant bokeh in the background successfully depicts Manhattan at night.
- − The capybara's anatomical structure is slightly distorted with claws appearing too prominent.
- − The passenger is looking forward rather than at her phone as requested.
- − The perspective makes the taxi interior look unnaturally wide and bowl-like.
Verdict: FLUX.1 Kontext [pro] is the stronger image because it adheres more closely to the specific details of the prompt, particularly the passenger's behavior and the capybara's calm expression. Stable Diffusion 3.5 Medium creates a more stylized, cinematic composition but fails on the specific requirement of the businesswoman looking at her phone.
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 Kontext [pro]
- + Excellent typography with nearly perfect spelling and formatting
- + Sophisticated gothic atmosphere with high-quality cinematic lighting
- + Elegant border and scroll banner integration
- − Includes some hallucinated text lines between the date and time
Stable Diffusion 3.5 Medium
- + Clear visual of the 'dark parchment' requested in the prompt
- + Accurate depiction of twisted trees and webs
- − Poor text rendering with numerous spelling errors
- − Lacks the 'polished' and 'cinematic' feel requested
- − Garbled dates and locations
Verdict: FLUX.1 Kontext [pro] is the clear winner, delivering a professional-grade invitation with legible gothic fonts and atmospheric lighting. Stable Diffusion 3.5 Medium struggles significantly with the text requirements and the overall composition feels more like a cartoon than a polished cinematic poster.
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 Kontext [pro]
- + Excellent text rendering with clean, stylized typography.
- + Strong adherence to the 3D miniature/diorama aesthetic.
- + Perfectly follows the layout instructions, including the flag placement.
- − The rice grains look more like rounded beads than culinary rice.
Stable Diffusion 3.5 Medium
- + Realistic textures on the nori and roe toppings.
- + Clean, bright color palette.
- − Failed to include the flag icon mentioned in the prompt.
- − The 'JAPAN' text is small and lacks the 'large bold' emphasis requested.
- − Missing the 'small raised diorama base' under the plate.
Verdict: FLUX.1 Kontext [pro] followed every aspect of the complex prompt, including specific placement of text, the flag icon, and the architectural diorama base. Stable Diffusion 3.5 Medium produced a nice image but failed on several structural prompt instructions like text hierarchy and the diorama element.
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 Kontext [pro]
- + Excellent fur texture modeling and lighting
- + Captures all four requested animals correctly
- + Beautiful composition with soft bokeh and god rays
- − The bunny and kitten features are slightly merged in appearance
- − One butterfly has a somewhat distorted shape
Stable Diffusion 3.5 Medium
- + High saturation and vibrant colors create a playful atmosphere
- + Clear distinction between the puppy and the fox kit
- − Failed to include the bunny entirely
- − The central animal has an anatomically confusing face that blends kitten and bunny traits awkwardly
- − Over-sharpened and less photorealistic compared to the competitor
Verdict: FLUX.1 Kontext [pro] successfully rendered all four requested animals with high fidelity and a soft, professional photographic quality. Stable Diffusion 3.5 Medium failed to include the bunny and produced anatomical glitches where animal features appeared merged, resulting in a less coherent image.
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 Kontext [pro]
- + Excellent typography rendering with perfect spelling.
- + Strong adherence to the minimalist vector emblem style.
- + High contrast and clean, balanced layout.
- − The 'steam' element is a bit thick and looks more like a leaf or decoration than steam.
Stable Diffusion 3.5 Medium
- + Ornate Victorian-influenced drawing style.
- + Good use of warm brown and cream tones.
- − Misspelled name as 'Florrian' and truncated year as 'Est 170'.
- − Composition is cluttered and fails the 'minimalist' requirement.
- − Gibberish text on the bottom banner.
Verdict: FLUX.1 Kontext [pro] followed the prompt instructions perfectly, delivering a clean, professional, and correctly spelled logo that fits the 'minimalist' and 'vector' keywords. Stable Diffusion 3.5 Medium failed significantly on the text rendering despite the artistic quality of the illustration, resulting in typos and a layout that was far too complex for a minimalist logo request.
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 Kontext [pro]
- + Excellent adherence to the NASA-inspired color palette.
- + Crisp, high-quality vector illustration style.
- + Legible main title and structured layout.
- − Includes Saturn instead of the Saturn V rocket at the top of the illustration.
- − Scientific inaccuracies in the diagram, such as Moon icons with rings like planets.
- − The logic of the pathing lines is chaotic and doesn't follow a chronological sequence.
Stable Diffusion 3.5 Medium
- + Attempts a vertical list structure for the steps requested.
- + Captures the 'muted red' and 'navy' aesthetic well.
- − Poor text rendering with many gibberish strings.
- − Iconography does not match the prompt (e.g., globe wireframes instead of specific mission icons).
- − Composition feels cluttered and lacks the 'clean, modern' infographic look.
Verdict: FLUX.1 Kontext [pro] produced a much cleaner and visually appealing vector poster that adheres closely to the requested color palette and style, despite some confusing astronomical choices like giving the Moon rings. Stable Diffusion 3.5 Medium failed significantly on text legibility and failed to provide the specific iconography (Saturn V, lunar module) requested in the prompt. FLUX.1 refers to the prompt's steps more effectively and is the clear winner for design quality.
Explore each model
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