FLUX.2 [dev] Turbo vs Stable Diffusion 3.5 Large
Head-to-head across 11 challenges
FLUX.2 [dev] Turbo
73.1%
win rate
Ties
3.8%
Stable Diffusion 3.5 Large
23.1%
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 [dev] Turbo
- + Perfect adherence to spatial instructions with the book clearly on top and the sphere inside.
- + Highly realistic texture on the glass cube, including dust and fingerprints.
- + Excellent lighting and depth of field that creates a cohesive, photographic feel.
- − The plant is inside/behind the cube in a slightly confusing way regarding the cube's back face.
Stable Diffusion 3.5 Large
- + Clean, sharp rendering of the glass and sphere.
- + Good lighting highlights on the surface of the table.
- − Failed to place the book on top of the cube, instead placing the cube on the book.
- − The plant is barely visible and does not clearly interact with the glass as requested.
- − Physics issues where the sphere appears to be floating inside the cube.
Verdict: FLUX.2 [dev] Turbo followed every spatial instruction in the prompt perfectly, placing the red book on top of the glass cube and the blue sphere inside it. In contrast, Stable Diffusion 3.5 Large failed the spatial challenge by placing the cube on top of the book and rendering a floating sphere with no clear ground plane inside 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 [dev] Turbo
- + Excellent adherence to all prompt details including motion blur from passing cars.
- + Highly realistic skin texture and facial details.
- + Accurate representation of the bicycle and repair tools on the ground.
- − The transition between the man's knees and the wet pavement is slightly awkward/clipped.
Stable Diffusion 3.5 Large
- + Strong cinematic mood with effective lighting and reflections.
- + Good depiction of light rain and wet pavement.
- − Missed the 'motion blur from passing cars' instruction as the background car is static.
- − Noticeable anatomy issues with the hands appearing distorted and fused.
- − The man seems to be standing/hovering strangely over the center of the bike frames.
Verdict: FLUX.2 [dev] Turbo followed the prompt much more accurately, successfully incorporating specific elements like motion blur and a 50mm lens look. Stable Diffusion 3.5 Large delivered a moody image but failed on the car motion and had significant structural issues with the man's hands and his physical relationship to the bicycle.
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 [dev] Turbo
- + Excellent adherence to the 'beads' instruction in the braids
- + Realistic skin texture with natural-looking scars and dirt
- + Superb metal texture with convincing torchlight reflections and scratches
- − The torch in the background is a bit distracting in its placement
Stable Diffusion 3.5 Large
- + Very intricate and beautiful engraving on the plate armor
- + Strong cinematic lighting and composition
- + Good preservation of the 'battle-worn' aesthetic
- − Completely missed the 'small beads' instruction in the hair
- − The background soldiers have a slightly 'melted' look common in older AI generations
Verdict: FLUX.2 [dev] Turbo followed the prompt much more accurately, including specific details like the beads in the hair that Stable Diffusion 3.5 Large missed. While Stable Diffusion 3.5 Large produced beautiful armor engravings, FLUX.2 offered better overall realism in the skin textures and lighting consistency.
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 [dev] Turbo
- + Excellent adherence to the grid layout requirement for food photos.
- + Highly legible main headers and body text with professional typography.
- + Very clean, modern layout that feels like a functional, finished graphic design piece.
- − Sub-headers and secondary text contain significant gibberish characters.
- − Layout goes slightly off-grid with the oversized 'Mains' photo compared to the top section.
Stable Diffusion 3.5 Large
- + Vibrant food photography that pops well against the white background.
- + Unique composition that places the text menu in a central column flanked by images.
- − Much poorer text rendering, with almost all menu items being illegible or nonsensical.
- − The layout feels more like a background pattern than a functional restaurant menu.
- − The categories (Appetizrs, Maimaes) include heavy spelling errors.
Verdict: FLUX.2 [dev] Turbo produces a much more realistic and usable menu design with clear sections and a professional grid layout. While Stable Diffusion 3.5 Large offers vibrant food images, its chaotic text rendering and disjointed composition make it feel less like a finished design product.
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.2 [dev] Turbo
- + Perfectly follows text instructions with clean, floating typography at top-center.
- + Exceptional realism in the sushi textures and wood grain of the diorama base.
- + Highly clean and professional composition that feels like modern digital art.
- − The 45-degree angle is slightly flattened, leaning more towards a side view than a true top-down isometric view.
- − Includes ginger and wasabi but misses the specific requested 'flag icon' separate from the text.
Stable Diffusion 3.5 Large
- + Excellent adherence to the '3D cartoon' and 'isometric' style with a clear diorama feel.
- + Creative interpretation of the sushi varieties and miniature environment.
- + Includes all requested elements including the flag icon and the diorama base.
- − Failed the text placement instruction, putting the text on a sign within the scene instead of top-center.
- − The scene is significantly more cluttered than the 'minimal garnish' requested.
- − Noticeable artifacts around the flags and some lighting inconsistencies.
Verdict: FLUX.2 [dev] Turbo produced a much cleaner and more professional-looking image that strictly followed the typography instructions. While Stable Diffusion 3.5 Large captured the 'cartoon' and 'isometric' look more vibrantly, its failure to place the text correctly and its cluttered composition made it less successful in meeting the specific prompt constraints.
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 [dev] Turbo
- + Excellent anatomical detail and realism across all four animals.
- + Includes all requested species with clear individual characteristics (tabby stripes, fox markings).
- + Superior lighting effects with visible god rays and dew sparkles as requested.
- − The scale of the butterflies is slightly large relative to the animals.
Stable Diffusion 3.5 Large
- + Captures a strong sense of motion and 'chasing' as requested.
- + Whimsical lighting and soft bokeh create a dreamlike atmosphere.
- − The kitten lacks distinct tabby markings and looks more like a generic ginger cat.
- − Significant anatomical artifacts, particularly the butterfly merged with the bunny's ear.
- − Lower overall sharpness and detail compared to Model A.
Verdict: FLUX.2 [dev] Turbo significantly outperforms Stable Diffusion 3.5 Large by delivering high-fidelity textures and accurate anatomy for all four requested animals. While Stable Diffusion 3.5 Large captures the 'chasing' motion well, it suffers from several AI artifacts and fails to produce the specific tabby kitten requested, whereas FLUX.2 provides a polished, 8K masterpiece that perfectly follows the lighting and prompt details.
Victorian Greenhouse Oasis
Text-to-Image“Hyper-photorealistic interior of a lush Victorian glass greenhouse filled with exotic tropical plants, vibrant blooming orchids, tall ferns, colorful butterflies in flight, sunlight filtering through ornate glass roof creating realistic caustics and dew on leaves, intricate iron framework visible, misty atmosphere, 8K masterpiece.”
AI Judge Analysis
FLUX.2 [dev] Turbo
- + Excellent rendering of dew drops on the orchid leaves in the foreground.
- + The iron framework is highly intricate and historically accurate to the Victorian style.
- + Superior volume and variety of flora, including tall ferns and orchids as requested.
- − Butterflies appear somewhat flat and pasted onto the scene rather than integrated with the lighting.
- − The lighting is a bit hazy, making the background details slightly soft.
Stable Diffusion 3.5 Large
- + Stunning Gothic/Victorian architecture with very high verticality.
- + Beautiful light rays (god rays) and atmospheric mist create a strong mood.
- + The scale feels much larger and more grand.
- − Noticeable anatomical issues with the largest butterfly in the top right which appears distorted.
- − Lacks the specific 'dew on leaves' detail requested in the prompt.
- − The orchids are less varied and look slightly more 'generic' compared to Model A.
Verdict: FLUX.2 [dev] Turbo followed the prompt details more closely, specifically excelling at the fine details like dew drops and the variety of orchids. Stable Diffusion 3.5 Large created a more majestic architectural space with better atmospheric lighting, but was let down by an awkwardly rendered butterfly and a lack of requested macro details.
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 [dev] Turbo
- + Excellent adherence to the 'hands on hips' and 'triumphant' pose instructions.
- + Highly realistic lighting and skin textures with a natural golden hour glow.
- + Greater sense of scale and depth in the NYC cityscape background.
- − The emblem is a very direct 'S' derivative rather than a unique design.
- − Slightly thicker proportions compared to the sleekness of Model B.
Stable Diffusion 3.5 Large
- + Successfully rendered the 'short hair' requirement with a chic pixie cut.
- + Vibrant color palette and sleek, modern costume textures.
- + Good full-body framing showing the character from head to toe.
- − Failed the 'hands on hips' instruction, opting for hands by the sides.
- − The lighting is flatter and more 'digital' looking compared to the requested photorealism.
- − Lower level of detail in the facial expression and urban background.
Verdict: FLUX.2 [dev] Turbo is the superior image because it followed the specific posing instructions and achieved a much higher level of photorealism. Stable Diffusion 3.5 Large failed to place the hands on the hips and produced a more synthetic, less detailed environment.
Intricate Floral Mandala
Text-to-Image“Perfectly symmetrical mandala made entirely of real flowers, petals, leaves, fruits, and seeds in vibrant natural colors, intricate layered patterns with radial symmetry, top-down view on a soft neutral background, hyper-detailed organic textures and subtle shadows, photorealistic, 8K masterpiece.”
AI Judge Analysis
FLUX.2 [dev] Turbo
- + Excellent photorealistic textures on the leaves and fruits
- + Exceptional radial symmetry and dense, intricate layering
- + Subtle, realistic shadows that give the arrangement depth
- − The neutral background is slightly dark compared to the 'soft neutral' request
Stable Diffusion 3.5 Large
- + Clean, bright composition with distinct individual elements
- + Good representation of all requested categories including seeds and nuts
- − The petals in the center look more like plastic or digital art than 'real flowers'
- − The arrangement feels more like a flat graphic design than a physical object
- − Symmetry is slightly off in the outer floating fruit elements
Verdict: FLUX.2 [dev] Turbo significantly outperforms the other model by providing a truly photorealistic image that looks like a hand-laid arrangement of organic materials. While Stable Diffusion 3.5 Large follows the prompt well, its rendering has a synthetic, digital quality that lacks the hyper-detailed organic textures found in the FLUX.2 output.
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 [dev] Turbo
- + Perfect adherence to the requested text 'Caffè Florian' with the correct grave accent.
- + Excellent vintage aesthetic with authentic-looking grain and texture.
- + Clean, professional vector-style layout with a well-integrated cloche and banner.
- − The steam is a bit simplified compared to the rest of the detailed illustration.
Stable Diffusion 3.5 Large
- + Good use of the 'Est. 1720' date and classic decorative flourishes.
- + The cloche design includes a nice 'opening' effect to reveal steam.
- − Spelling error in the main name: 'Cafféé' instead of 'Caffè'.
- − The composition feels slightly disjointed with the large gap between the cloche and the banner.
- − The texture is mostly confined to the edges rather than integrated into the design.
Verdict: FLUX.2 [dev] Turbo is the clear winner as it followed the typography instructions perfectly, including the specific accent in 'Caffè'. Stable Diffusion 3.5 Large failed the text requirement by adding an extra 'e' and using the wrong accent, and its overall composition felt less cohesive as a professional logo.
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 [dev] Turbo
- + Excellent text rendering with almost perfect spelling of step names and crew members.
- + High prompt adherence, following all sequential steps and technical icons requested.
- + Clean, modern layout that functions well as an educational infographic.
Stable Diffusion 3.5 Large
- + Strong aesthetic appeal with a high-quality flat vector art style.
- + Effective use of the requested NASA-inspired color palette.
- + Good use of negative space and balance in the composition.
- − Failed to follow the requested sequential steps or include correct text.
- − Icons include non-existent planets/rings that don't relate to the Apollo 11 mission.
- − Text is mostly illegible or nonsensical 'lorem ipsum' style.
Verdict: FLUX.2 [dev] Turbo is the clear winner as it successfully created a functional, legible infographic that followed all six requested steps and rendered technical labels accurately. Stable Diffusion 3.5 Large produced a visually pleasing piece of art, but it failed completely on the information architecture, featuring garbled text and irrelevant celestial bodies.
FLUX.2 [dev] Turbo
Distilled version of Black Forest Labs' FLUX.2 [dev] outperforming it at a cheaper price. Developed by fal.ai.
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