FLUX.2 [pro] vs Stable Diffusion 3.5 Large
Head-to-head across 8 challenges
FLUX.2 [pro]
73.7%
win rate
Ties
0.0%
Stable Diffusion 3.5 Large
26.3%
win rate
Challenge Results
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.2 [pro]
- + Perfect prompt adherence with spatial relationships correctly placed.
- + Excellent lighting and depth of field, creating a very realistic photographic look.
- + Material properties are convincing, with accurate reflections and transparency in the glass.
- − The plant in the background is quite blurred, though still clearly identifiable.
Stable Diffusion 3.5 Large
- + High level of detail in the glass texture, including realistic smudges and scratches.
- + Vibrant colors and sharp rendering of objects.
- − Failed the prompt's spatial instructions by placing the book under the sphere instead of on top of the cube.
- − Logical inconsistency: the book appears to be both inside and outside the glass base simultaneously.
Verdict: FLUX.2 [pro] followed every spatial instruction perfectly, correctly placing the sphere inside the cube and the book on top. Stable Diffusion 3.5 Large failed the spatial arrangement, placing the book at the base and erroneously putting the sphere on top of the book, while also exhibiting clipping issues where the book meets the glass.
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.2 [pro]
- + Exceptional photographic realism with natural skin textures and visible pores.
- + Realistic mechanical details on the bicycle and authentic rain droplets on surfaces.
- + Superb handling of lighting and reflections on the wet pavement.
- − The motion blur on the background car is subtle rather than pronounced.
Stable Diffusion 3.5 Large
- + Good composition that captures the 'candid' and 'imperfect framing' requested.
- + Successfully incorporates motion blur on moving vehicles in the background.
- + Strong atmosphere with visible rain streaks.
- − The man's hands have significant anatomical distortions (merged fingers and strange shapes).
- − The bicycle's mechanical structure is nonsensical in several places.
- − Lower overall sharpness and texture quality compared to the other model.
Verdict: FLUX.2 [pro] produces a significantly more realistic and technically sound image, with incredible attention to skin texture, bicycle mechanics, and the physics of water. Stable Diffusion 3.5 Large succeeds in creating a more dynamic sense of motion and 'imperfect' street photography framing, but it fails significantly on anatomical details and mechanical coherence.
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.2 [pro]
- + Excellent adherence to hair beads and lighting prompts.
- + Superior texture on leather straps and clothing underlayers.
- + Stronger 'close portrait' composition with cinematic bokeh sparks.
- − The scars look a bit like digital paint or face paint rather than deep physical wounds.
Stable Diffusion 3.5 Large
- + Very intricate engraving details on the plate armor.
- + Complex hair braiding style.
- + Good depiction of dirt and weathering on the face.
- − Failed to include the requested beads in the hair.
- − Lighting feels flat and daylight-based rather than warm torchlight.
- − Less focus on the requested leather and cloth textures.
Verdict: FLUX.2 [pro] followed the prompt more comprehensively, successfully including the specific details of hair beads and warm torchlight reflections. While Stable Diffusion 3.5 Large produced beautiful armor engravings, it missed several key prompt elements and provided a broader shot rather than the requested close portrait.
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.2 [pro]
- + Excellent adherence to the grid layout with distinct sections for different food categories.
- + Clean, legible typography that mimics a real-world professional menu.
- + Highly realistic food photography that fits the restaurant aesthetic well.
- − Contains several spelling errors (e.g., 'MINS' instead of 'MAINS', 'MageFiza').
- − Logic errors in pricing and content pairing, such as 'Garlic Bread' appearing in every section including 'Mins' for $40.
Stable Diffusion 3.5 Large
- + Strong aesthetic appeal with a high-contrast minimalist look.
- + Effective use of a colorful photo grid bordering the text.
- + Bold, impactful sans-serif headline typography.
- − Text rendering is poor with significant gibberish throughout the body and subheaders.
- − The layout is less practical as a functional menu, feeling more like a poster than a list of items.
- − The cropping on the sides suggests a tiled pattern rather than a finished page design.
Verdict: FLUX.2 [pro] produced a far more professional and usable menu layout with realistic food images and a clear organizational structure, despite some minor typos in section headers. Stable Diffusion 3.5 Large created a visually interesting artistic composition, but failed significantly on legibility and the practical requirements of a menu design.
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.2 [pro]
- + Excellent fur detail and texture across all three subjects
- + Beautiful lighting with well-defined dew sparkles and god rays
- + Dynamic and engaging composition with animals interacting directly
- − Missed the baby bunny requested in the prompt
- − Large dog paws appear slightly anatomically odd in their reach
Stable Diffusion 3.5 Large
- + Included all four requested animals (puppy, kitten, bunny, fox)
- + Strong sense of movement and 'chasing' as requested
- + Bright, joyful color palette
- − The tabby kitten's appearance is closer to a generic ginger/brown kitten than a distinct tabby
- − Lower level of fine detail in the fur and background compared to Model A
- − Blurry artifacts on the butterfly wings
Verdict: Stable Diffusion 3.5 Large followed the prompt more accurately by including all four animals, whereas FLUX.2 [pro] missed the baby bunny entirely. However, FLUX.2 [pro] produced a much higher quality image with superior textures, more realistic lighting, and more expressive character designs, making it the more visually impressive output despite the missing element.
Heroic Super Hero Portrait
Text-to-Image“Hyper-photorealistic full-body portrait of a female superhero standing triumphantly on a New York skyscraper rooftop at golden sunset, wearing a classic modest superhero costume with flowing cape, chest emblem, gloves, and boots in red and blue colors, practical design, short hair, strong determined heroic expression looking into the distance, powerful confident stance with hands on hips and cape billowing dramatically in the wind, detailed urban cityscape background, warm natural sunlight with sharp shadows and fabric highlights, ultra-sharp textures on suit, hair, and concrete, 8K masterpiece, empowering family-friendly style.”
AI Judge Analysis
FLUX.2 [pro]
- + Excellent photorealism with natural textures and cinematic lighting.
- + Perfect adherence to the 'hands on hips' and 'triumphant' pose.
- + Stable and realistic interaction between the character's feet and the rooftop surface.
- − The chest emblem is heavily influenced by Supergirl, showing less creativity in original design.
Stable Diffusion 3.5 Large
- + Very crisp cityscape background and vibrant colors.
- + Accurately represents the 'short hair' and 'cape billowing' aspects of the prompt.
- − Failed the 'hands on hips' instruction, showing arms at the side instead.
- − The lighting on the character feels a bit flat and 'green-screened' compared to the background.
- − Character appears to be floating slightly above the ledge rather than standing on it.
Verdict: FLUX.2 [pro] is the clear winner as it creates a cohesive, hyper-photorealistic scene that perfectly captures the requested pose and lighting. Stable Diffusion 3.5 Large delivered high-quality individual elements, but failed the specific 'hands on hips' instruction and lacked the grounded, realistic integration of the character into the environment.
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.2 [pro]
- + Perfect adherence to text and accent marks in 'Caffè Florian'.
- + Clean vector emblem style with sophisticated cross-hatching detail.
- + Professional composition that looks like a real minimalist logo.
- − The 'Est. 1720' banner is slightly small relative to the main text.
Stable Diffusion 3.5 Large
- + Good use of vintage parchment-style texture on the background.
- + Followed the instruction for the 'Est. 1720' text.
- − Included an extra letter in the name, spelling it 'Cafféé'.
- − The cloche illustration is disjointed with a strange pipe/arm detail appearing under the dome.
- − The composition feels cluttered and lacks the minimalist vector aesthetic requested.
Verdict: FLUX.2 [pro] produced a high-quality, professional logo that perfectly followed all text and stylistic requirements. In contrast, Stable Diffusion 3.5 Large suffered from a spelling error in the main brand name and a messy, nonsensical illustration of the cloche dome.
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.2 [pro]
- + Excellent layout that follows the chronological steps requested
- + Clean vector aesthetic with readable main headings
- + Good adherence to the requested NASA-inspired color palette
- − Nonsense filler text for the minor descriptions
- − The 'Launch' icon resembles a generic shuttle rather than a Saturn V
Stable Diffusion 3.5 Large
- + Includes a high level of visual detail and technical-looking callouts
- + Captures the NASA aesthetic through colors and vintage-style diagramming
- − Failed to provide a clear step-by-step infographic layout
- − Text is largely illegible or misspelled (e.g., 'Lannch')
- − Composition is cluttered and chaotic compared to the clean layout requested
Verdict: FLUX.2 [pro] followed the prompt's structural requirements much better, creating a clear vertical progression from launch to landing with distinct icons. Stable Diffusion 3.5 Large produced a more cluttered, non-linear composition that ignored the specific six-step instruction and suffered from significant text distortions.
FLUX.2 [pro]
Black Forest Labs' state-of-the-art image generation model with maximum quality and speed, supporting text-to-image and multi-reference image editing with up to 4MP output
Stable Diffusion 3.5 Large
Stability AI's 8.1-billion parameter Multimodal Diffusion Transformer (MMDiT) text-to-image model featuring improved image quality, typography, complex prompt understanding, and resource-efficiency