FLUX.2 [dev] Turbo vs FLUX.2 [flex]
Head-to-head across 9 challenges
FLUX.2 [dev] Turbo
62.5%
win rate
Ties
12.5%
FLUX.2 [flex]
25.0%
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] Turbo
- + Excellent realism with natural textures on the glass, wood, and book.
- + Highly accurate glass physics, including subtle dust motes and reflections.
- + Correct spatial placement of the plant behind the glass cube.
- − The blue sphere is arguably more like a marble than a simple sphere.
- − The plant is slightly more intrusive into the cube's visual space than may be intended.
FLUX.2 [flex]
- + Clean, minimalist composition with clear geometric shapes.
- + Strict adherence to the 'small blue sphere' prompt element by providing a matte, solid sphere.
- + Very soft, clean lighting that mimics a studio environmental look.
- − The image has a more artificial, CGI-like appearance compared to the realism of Model A.
- − The plant's interaction with the glass is less visually complex and feels flat.
- − The book texture is very simplified and lacks detail on the edges.
Verdict: FLUX.2 [dev] Turbo produces a much more realistic and photographically convincing image with intricate details like dust on the glass and rich wood grain. FLUX.2 [flex] captures the geometric requirements and matte spheres well but lacks the depth, texture, and physical realism found in the Turbo output. FLUX.2 [dev] Turbo is the preferred choice for its superior visual quality and lighting.
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 the 'imperfect framing' prompt with a centered, slightly high-angle street photography feel.
- + Great inclusion of secondary details like the tools on the ground and multiple passing cars with motion blur.
- + Very realistic skin texture and age details on the subject.
- − The rear tire of the bicycle is mangled and physically impossible.
- − The bicycle spokes are inconsistent and messy.
FLUX.2 [flex]
- + Beautiful cinematic lighting and wet pavement reflections that feel very 'street photo'.
- + Clever use of foreground obstruction (the pole) to satisfy the 'imperfect framing' request.
- + Better overall color palette and atmosphere.
- − The bicycle structure is nonsensical, with the seat post and handlebars appearing to merge or being missing entirely.
- − The subject's hands are mangled and blending into the bike frame.
Verdict: Both models captured the atmospheric requirements of the prompt well, including the rain, reflections, and motion blur. FLUX.2 [dev] Turbo followed the compositional 'street photography' style more accurately and provided a more detailed subject, but FLUX.2 [flex] produced a more visually striking, cinematic image despite significant anatomical and mechanical errors in the bicycle and hands. FLUX.2 [dev] Turbo is the winner for better overall coherence of the subject and scenery.
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 typography with clear, bold headers and legible subtext.
- + Strong professional layout that feels like a real commercial menu design.
- + Good implementation of vibrant color accents in the border and headers.
- − The food photos are slightly repetitive, featuring a lot of pizza even in non-pizza sections.
- − Some text overlapping issues in the 'Mains' section prices.
FLUX.2 [flex]
- + Clean and symmetric $3x2$ photo grid layout.
- + Distinct color-coding for the different sections (Red, Yellow, Green).
- + Good variety of food types representing the requested categories.
- − The typography is weaker and less professional than Model A.
- − Large empty white spaces at the top and bottom make the composition feel unbalanced.
- − Pixelation and artifacts are visible in some of the food images.
Verdict: FLUX.2 [dev] Turbo produced a much more realistic and professional menu design with sophisticated typography and a dynamic layout. While FLUX.2 [flex] achieved a cleaner grid and better color-coding for sections, it lacked the design polish and font clarity found in the Turbo model.
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
- + Excellent text rendering and placement next to a clean flag icon.
- + Higher level of realism in the food textures, especially the rice grains and fish marbling.
- + Stronger 'diorama' feel with the wooden base contrasting the background.
- − The scale of the flag icon is slightly smaller than requested relative to the text.
FLUX.2 [flex]
- + Perfect adherence to the 'small flag icon' prompt with a centered layout.
- + Captures the 'cartoon' aesthetic perfectly with smooth, toy-like textures.
- + Diverse variety of sushi types (nigiri and maki) compared to Model A.
- − The text 'JAPAN' and 'SUSHI' is vertically stretched and slightly less polished than Model A.
- − The textures feel a bit flat or plastic-like compared to the 'refined' request.
Verdict: Both models followed the complex prompt very well, including the isometric perspective and specific text. FLUX.2 [dev] Turbo (Model A) is the winner due to its superior texture rendering on the sushi and more professional typography, while FLUX.2 [flex] (Model B) went for a more literal 'toy' cartoon look that lacks the same level of visual depth.
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 action and dynamic posing that captures the 'tumbling' and 'chasing' part of the prompt.
- + Superior lighting effects with clear god rays and glistening dew drops.
- + Highly expressive facial features on all four animals.
- − The kitten has an anatomically awkward fifth leg/paw visible beneath its chest.
- − The scale of the butterflies is slightly large compared to the animals.
FLUX.2 [flex]
- + Very soft, high-quality fur textures and realistic eye reflections.
- + Clean composition with good separation between the subjects and the background.
- + Accurate species representation with no major anatomical glitches.
- − The scene is static and the animals are mostly sitting, missing the 'playfully chasing' and 'tumbling' instructions.
- − The kitten appears somewhat small and slightly stiff compared to the others.
Verdict: FLUX.2 [dev] Turbo followed the movement and action descriptors of the prompt much better, creating a more joyful and dynamic scene, although it suffered from a minor anatomical artifact on the kitten. FLUX.2 [flex] produced a cleaner, more technically sound image in terms of anatomy, but failed to capture the requested 'tumbling' and 'chasing' behavior, resulting in a more static group portrait.
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
- + Captures the golden hour lighting naturally with realistic lens flare and warm tones.
- + Shows a high level of costume texture detail, appearing like a practical movie suit.
- + The background cityscape of New York is very detailed and recognizable.
- − The hands on hips look slightly awkward with the finger placement.
- − The 'S' emblem on the chest is derived closely from Supergirl, making it less of a generic creative hero.
FLUX.2 [flex]
- + Perfect adherence to the 'short hair' requirement with a clean, heroic cut.
- + The costume design is more original and 'practical' looking as requested in the prompt.
- + Excellent full-body composition and balanced lighting across the figure.
- − The lighting is a bit flatter and feels less like a real 'sunset' compared to Model A.
- − The cityscape in the background is slightly less sharp and detailed.
Verdict: Both models followed the prompt exceptionally well, but FLUX.2 [dev] Turbo captured the cinematic 'golden sunset' atmosphere more effectively with realistic lighting and lens effects. FLUX.2 [flex] provided a better interpretation of the short hair request and a more original costume design, but the lighting felt slightly more synthetic overall.
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 adherence to horizontal and vertical symmetry.
- + Highly detailed textures on petals and seeds, looking very organic and real.
- + Sophisticated color palette with a mix of soft and vibrant tones.
- − Symmetry, while good, has slight variances in the positioning of the small purple berries.
- − The lighting is bit flat across the center.
FLUX.2 [flex]
- + Striking vibrant colors that pop against the neutral background.
- + Great use of depth with water droplets on the fruit and leaves.
- + Strong radial composition that feels very dynamic.
- − Noticeable symmetry breaks, specifically with the red/black berry clusters on the outer edge.
- − The fruit feels slightly repetitive in shape, lacking the variety seen in the other model.
Verdict: Both models followed the prompt well, but FLUX.2 [dev] Turbo achieved a more convincing photorealistic look with superior mechanical symmetry. FLUX.2 [flex] has beautiful vibrant colors and interesting details like dew drops, but it fails on the 'perfectly symmetrical' requirement, particularly with the haphazard placement of the outer berry sprigs.
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
- + Excellent adherence to the 'vintage' and 'warm brown and cream' color palette.
- + Superior typography with appropriate distressing and accurate accents (grave accent on Caffè).
- + Detailed vector emblem style with a high-quality textured paper background.
- − The composition is slightly more complex, pushing the boundaries of 'minimalist'.
FLUX.2 [flex]
- + Strong adherence to the 'minimalist' aspect of the prompt.
- + Clean vector execution with clear line work.
- + Accurate text spelling and inclusion of the requested elements.
- − Lacks the 'vintage' character and subtle texture requested in the prompt.
- − The steam effect is very faint and lacks the graphic impact seen in the competing image.
- − The banner and typography feel a bit generic compared to a professional logo.
Verdict: FLUX.2 [dev] Turbo produced a much more sophisticated and aesthetically pleasing logo that perfectly captures the vintage, textured atmosphere requested. While FLUX.2 [flex] followed the minimalist instruction well, it lacked the professional polish and design depth found in FLUX.2 [dev] Turbo's output.
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
- + Includes all 6 requested steps, including the final landing.
- + Text rendering is highly accurate and readable.
- + Added clever supporting details like the astronaut silhouettes.
- − The Saturn V icon incorrectly includes side boosters (looking more like a generic heavy lift rocket).
- − The composition is a bit cluttered and lacks a clear logical flow path.
FLUX.2 [flex]
- + Excellent flat-vector aesthetic that matches the 'modern infographic' request perfectly.
- + The Saturn V rocket silhouette is more accurate to the actual Apollo vehicle.
- + Clean, balanced composition with a clear vertical hierarchy.
- − Missed the 6th step (Landing) entirely.
- − The 'Translunar' arc is repeated twice in a way that is confusing for an infographic.
Verdict: FLUX.2 [dev] Turbo adhered better to the prompt's specific instructions, successfully including all six mission steps and rendering the text nearly perfectly. However, FLUX.2 [flex] achieved a much superior 'flat-vector' aesthetic that feels like a professional modern infographic, despite failing to include the final landing step and making a logical error with the trajectory iconography.
FLUX.2 [dev] Turbo
Distilled version of Black Forest Labs' FLUX.2 [dev] outperforming it at a cheaper price. Developed by fal.ai.
FLUX.2 [flex]
Black Forest Labs' precision image generation model with maximum control, reliable text rendering, and complete creative control supporting up to 4MP output