FLUX.2 [dev] Flash vs FLUX.2 [dev] Turbo
Head-to-head across 8 challenges
FLUX.2 [dev] Flash
20.0%
win rate
Ties
30.0%
FLUX.2 [dev] Turbo
50.0%
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] Flash
- + Excellent prompt adherence, correctly following all positional and color instructions.
- + Realistic glass textures including subtle dust and refractions.
- + Accurate lighting and shadows coming from the left window source.
- − The plant in the background is slightly less defined compared to Model B.
FLUX.2 [dev] Turbo
- + Excellent photographic quality and sharp focus on the glass cube.
- + Very realistic wood grain on the table.
- + Clear visibility of the plant through the glass as requested.
- − The back-right vertical edge of the cube appears slightly misaligned with the top corner.
- − The blue sphere has a slightly more artificial appearance compared to Model A.
Verdict: Both FLUX.2 [dev] Flash and FLUX.2 [dev] Turbo produced nearly identical, high-quality results that followed the prompt perfectly. FLUX.2 [dev] Flash is slightly preferred for its superior rendering of the glass cube's structural integrity and the more natural integration of the blue sphere within the scene.
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] Flash
- + Excellent adherence to the 'imperfect framing' prompt with a tight, slightly off-center crop.
- + Very realistic skin texture and age spots on the man's hands and face.
- + Stronger bokeh effect and light reflections that enhance the cinematic feel.
- − The front wheel is missing its tire/rim at the bottom, appearing to clip into the ground.
- − The man's right hand has some minor anatomical blurring/merging with the bike frame.
FLUX.2 [dev] Turbo
- + Better overall composition that shows more of the rainy street environment and background activity.
- + More natural rain effect visible against the darker background elements.
- + The tools and parts on the ground add to the storytelling of a 'repair' scene.
- − The front wheel has a significant rendering error where the rim is severed at the bottom.
- − The man's posture looks slightly uncomfortable as if he is kneeling inside the bike frame.
Verdict: Both models captured the requested atmosphere incredibly well, particularly the 'candid' look and the motion blur of passing cars. FLUX.2 [dev] Flash produces a more intimate, high-quality portrait with superior skin textures, while FLUX.2 [dev] Turbo offers a better sense of place but suffers from more noticeable structural glitches in the bicycle's wheels.
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] Flash
- + Excellent symmetry in the armor engraving
- + Clean and well-defined braid structure
- + Superior leather texture and stitching on the straps
- − The torch positions are very symmetrical, feeling slightly artificial
- − Sparks are somewhat uniform in size
FLUX.2 [dev] Turbo
- + More natural and dynamic lighting from the single strong torch
- + Greater variety in spark size and bokeh depth
- + Excellent facial texture and grit
- − The leather strap buckle on the chest is physically impossible/confusing
- − Less symmetrical armor engraving compared to Model A
Verdict: Both models followed the prompt exceptionally well, capturing the beads, scars, and textures perfectly. FLUX.2 [dev] Flash achieves a cleaner, more balanced composition with better mechanical details on the buckles, while FLUX.2 [dev] Turbo has more realistic, atmospheric lighting and better spark distribution.
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] Flash
- + Perfect text rendering and layout for 'JAPAN' and 'SUSHI'.
- + Clean, soft textures that perfectly match the 'cartoon scene' and 'refined textures' prompt.
- + Excellent miniature diorama feel with a simple, high-quality wooden base.
- − The sushi construction is slightly surreal, blending nigiri toppers with a maki-like interior core.
FLUX.2 [dev] Turbo
- + Highly realistic rice and fish textures with great PBR material properties.
- + More traditional and recognizable sushi (nigiri) presentation.
- + Accurate text and flag placement.
- − The wooden base has some texture tiling/clipping issues on the left edge.
- − Slightly more cluttered with additional garnishes compared to the 'minimal' request.
Verdict: Both models followed the prompt exceptionally well, adhering to the isometric perspective, text requirements, and color palette. FLUX.2 [dev] Flash is preferred as it better captures the 'cartoon scene' and 'soft refined texture' aesthetic requested, whereas FLUX.2 [dev] Turbo leans a bit more towards photo-realism with slightly less clean diorama edges.
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] Flash
- + Includes all four requested animals plus an extra rabbit, creating a fuller scene.
- + Excellent fur textures particularly on the fox and the golden retriever.
- + The lighting and 'dew sparkles' are clearly defined and aesthetically pleasing.
- − The extra animal (second rabbit/bunny head) makes the anatomy in the center look slightly crowded and confusing.
- − The cat's posture is a bit stiff compared to Model B.
FLUX.2 [dev] Turbo
- + Perfect adherence to the count and types of animals requested (puppy, kitten, bunny, fox).
- + Dynamic and playful posing that better captures the 'tumbling' and 'chasing' part of the prompt.
- + Very high visual clarity and consistent lighting across the different fur types.
- − Slightly fewer butterflies than Model A, though still sufficient for the prompt.
- − The kitten's tail looks slightly elongated.
Verdict: Both models produced high-quality, charming images that captured the golden hour lighting and dew sparkles. FLUX.2 [dev] Turbo is the winner because it followed the specific animal count accurately and captured more dynamic, 'tumbling' poses, whereas FLUX.2 [dev] Flash added an extra rabbit that made the center composition look a bit cluttered.
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] Flash
- + Excellent adherence to the 'hands on hips' prompt with clear thumb and finger placement.
- + Stronger overall skin texture and more natural facial features.
- + Better lighting integration where the golden hour glow hits the side of the suit and boots.
- − The left hand (screen right) has a slightly awkward thumb position against the hip.
FLUX.2 [dev] Turbo
- + Superior background composition with the Empire State Building more prominently framed.
- + Dramatic, well-rendered billowing effect on the cape.
- + Accurate full-body framing and heroic stance.
- − Anatomy error on the hands where the gloves merge awkwardly with the hips, missing clear thumb definition.
- − Slightly smoother, more 'plastic' look to the facial skin compared to Model A.
Verdict: Both models followed the prompt nearly identically, likely due to a shared architecture. FLUX.2 [dev] Flash is the winner because it handled the specific 'hands on hips' instruction with much better anatomical accuracy, whereas FLUX.2 [dev] Turbo struggled with the hand-hip intersection. While Turbo had a slightly more iconic city composition, the superior physical details in Flash make it the more realistic output.
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] Flash
- + Excellent adherence to the 'perfectly symmetrical' requirement.
- + Bolder, more vibrant color palette with high-contrast floral elements.
- + Very clean background and distinct shadows that create a 3D effect.
- − Some fruit elements (like the orange slices) look slightly less grounded and more illustrative than the flowers.
FLUX.2 [dev] Turbo
- + Impressive organic textures, particularly on the berries and fruits.
- + Soft, delicate lighting that enhances the photorealistic quality.
- + Complex layering of petals and leaves creates a dense, rich pattern.
- − The symmetry is slightly imperfect on the outer edges and core compared to Model A.
- − Colors are a bit more muted and earthy, lacking the punch of the 'vibrant' prompt requirement.
Verdict: FLUX.2 [dev] Flash delivered a more technically accurate response to the 'perfectly symmetrical' prompt, maintaining a tighter radial pattern with higher color saturation. FLUX.2 [dev] Turbo produced slightly more realistic textures for the organic materials like the apples and blackberries, but it fell short on the mathematical precision of the mandala layout.
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] Flash
- + Clean, legible typography for the main headers and crew members.
- + Very high-quality vector illustrations of the Lunar Module and Saturn V.
- + Good adherence to the requested NASA-inspired color palette.
- − Literal interpretation of the prompt led to 'Satauuri Iccon' appearing as text rather than just an icon.
- − Includes duplicate labels for 'Descent' and 'Landing' creating a cluttered layout.
- − Minor spelling errors in small supporting text (e.g., 'Tranquility' vs 'Tranquility').
FLUX.2 [dev] Turbo
- + Includes a well-rendered NASA logo that fits the prompt's theme.
- + Professional layout with better use of negative space.
- + Accurate spelling of 'Tranquility' and the crew names.
- − Muddied the requested workflow by duplicating 'Translunar' and the Moon icons.
- − Also included technical prompt text ('Saturn V icon') as a text label.
- − The trajectory paths are a bit confusing and overlap inconsistently.
Verdict: Both models struggled with the 'negative constraint' of not including prompt instructions as literal text labels (both included variations of 'Saturn Icon'). Flux.1 [dev] Flash produces slightly more detailed individual illustrations, but Flux.1 [dev] Turbo has a cleaner, more professional infographic layout and better spelling. Turbo is the preferred choice for a cohesive poster design despite some redundancy in the icons.
FLUX.2 [dev] Flash
Fast distilled version of Black Forest Labs' FLUX.2 [dev] optimized for speed and cost efficiency.
FLUX.2 [dev] Turbo
Distilled version of Black Forest Labs' FLUX.2 [dev] outperforming it at a cheaper price. Developed by fal.ai.