Stable Diffusion 3.5 Large vs Z-Image Turbo
Head-to-head across 8 challenges
Stable Diffusion 3.5 Large
29.4%
win rate
Ties
17.6%
Z-Image Turbo
52.9%
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
Stable Diffusion 3.5 Large
- + Excellent photo-realistic lighting and tabletop texture.
- + High resolution with fine details like dust and fingerprints on the glass.
- − Failed the spatial prompt: the red book is inside/under the sphere instead of on top of the cube.
- − The 'sphere' is resting on the book, not just 'inside the cube' independently.
Z-Image Turbo
- + Perfect prompt adherence: the book is on top, sphere is inside, and plant is behind.
- + Accurate glass reflections and shadowing on the wooden surface.
- + Correct lighting direction from the left as requested.
- − Slightly lower sharpness compared to Model A.
- − The plant in the background is quite blurry/out of focus.
Verdict: Stable Diffusion 3.5 Large produced a more visually stunning and detailed image, but completely failed the spatial requirements of the prompt by placing the book inside the cube. Z-Image Turbo followed every instructional detail perfectly, including the specific positioning of the book on top and the sphere inside, making it the superior choice for prompt adherence.
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
Stable Diffusion 3.5 Large
- + Excellent atmosphere with heavy rain and prominent wet pavement reflections.
- + Captures the requested motion blur from passing vehicles effectively.
- + Strong adherence to the 'cinematic' and 'candid' feel requested.
- − The anatomy of the man's hands is mangled and physically impossible.
- − The bicycle structure is nonsensical, with its frame disappearing into the man's body and lacking a proper seat/rear assembly.
Z-Image Turbo
- + Much better anatomical accuracy for the man's hands and face.
- + The bicycle is rendered with a realistic, logical frame and components.
- + Good skin texture and a natural, unstylized look.
- − Lacks the requested motion blur on the passing car.
- − The rain effect is very faint and barely visible compared to the prompt's requirements.
Verdict: Stable Diffusion 3.5 Large does a significantly better job at capturing the 'cinematic' atmosphere, rain, reflections, and motion blur requested in the prompt, but it fails completely on anatomical and object coherence. Z-Image Turbo produces a much more grounded and physically accurate image of a man and a bike, but it misses several stylistic descriptors like motion blur and the intensity of the light rain. Z-Image Turbo is the preferred choice here because the structural failures in the Stable Diffusion image are too distracting for a realistic prompt.
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
Stable Diffusion 3.5 Large
- + Exquisite engraving detail on the plate armor
- + Strong cinematic lighting and composition
- + Excellent hair texture and realistic facial expression
- − Missed the request for small beads in the hair
- − Armor looks a bit too clean for a 'battle-worn' description despite facial scars
Z-Image Turbo
- + Accurately included small beads in the braided hair
- + Highly realistic lighting effects from the torch across the metal
- + Excellent interpretation of 'battle-worn' with visible dirt and blood
- + Sharp detail on leather straps and chainmail layer
- − The torch is positioned awkwardly close to the face
- − Slightly less intricate engraving on the armor compared to Model A
Verdict: While Stable Diffusion 3.5 Large produced a more intricate armor design and a cleaner aesthetic, Z-Image Turbo adhered much better to the specific technical requests of the prompt. Z-Image Turbo successfully included the beads in the hair, the warm reflected torchlight, and the fine textures of the underlayers, creating a more authentic 'battle-worn' character.
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
Stable Diffusion 3.5 Large
- + Excellent photographic quality and variety in the food images
- + Bold use of typography that captures a high-end minimalist aesthetic
- + Strong adherence to the 'grid' prompt with a sidebar-style layout
- − Text is largely gibberish and very difficult to read
- − The layout feels more like a poster than a functional menu page
Z-Image Turbo
- + Layout much more closely resembles a functional restaurant menu
- + Text is clearer and includes pricing, which adds to the realism of a menu
- + Better alignment of the sections requested in the prompt
- − Food photos are more repetitive and look slightly more 'artificial'
- − Typo 'PIZZA MANS' is a significant focal point error
- − Lower resolution/clarity in the graphics compared to Model A
Verdict: Stable Diffusion 3.5 Large wins on pure visual quality and artistic composition, looking like a professional high-end design piece, though the text is unreadable. Z-Image Turbo followed the functional requirements of the prompt better by creating a recognizable menu layout with pricing, but was let down by lower-quality food rendering and a glaring typo in the main header.
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
Stable Diffusion 3.5 Large
- + Excellent 3D miniature diorama feel with complex details
- + Correctly identifies and places the Japanese flag
- + Text is rendered cleanly on a flag within the scene
- − Placed the text on a sign rather than at the top-center of the image structure
- − The scene has significant garnish contrary to the 'minimal garnish' request
Z-Image Turbo
- + Perfectly follows 'top-center' text placement and layout requests
- + Exceptional material rendering with soft, refined 3D cartoon textures
- + Adheres better to the 'minimal' aesthetic requested
- − Included a Chinese flag icon instead of the requested Japanese flag
- − The text 'SUSHI' is slightly off-center compared to 'JAPAN'
Verdict: Stable Diffusion 3.5 Large creates a more vibrant and detailed diorama with the correct national flag, appearing more like a finished artistic miniature. However, Z-Image Turbo followed the layout instructions for text placement and minimalism much more closely, despite the major error of using the wrong flag icon. Stable Diffusion 3.5 Large is the preferred choice for its correct cultural context and high level of detail.
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
Stable Diffusion 3.5 Large
- + Excellent depiction of morning light and 'god rays' through the trees.
- + Highly expressive and joyful facial expressions on all animals.
- + Dynamic sense of motion with the puppy running toward the camera.
Z-Image Turbo
- + Successfully includes all four requested species with high detail.
- + Better preservation of individual textures, especially on the kitten and fox.
- + Clearer 'dew sparkles' on the grass in the foreground.
- − The puppy's paw is unnaturally fused/resting on the bunny's back in a stiff way.
- − The lighting is flatter and lacks the atmospheric 'god rays' requested by the prompt.
- − The kitten's facial structure is slightly distorted.
Verdict: Both models followed the complex prompt by including all four animals. Stable Diffusion 3.5 Large captured the requested lighting and mood significantly better, creating a magical atmosphere with god rays and a strong sense of joy. While Z-Image Turbo rendered the kitten and fox more distinctly, the composition felt more static and the interaction between the puppy and rabbit was anatomically awkward.
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
Stable Diffusion 3.5 Large
- + Excellent depiction of a detailed New York City skyline with recognizable architecture.
- + High-quality metallic textures on the costume and boots.
- + Beautiful dramatic lighting with a clear golden hour glow across the cityscape.
- − Failed to follow the 'hands on hips' instruction, posing with arms at her sides instead.
- − The facial features look slightly plastic and less photorealistic than Model B.
Z-Image Turbo
- + Perfect adherence to the 'hands on hips' and 'triumphant stance' prompt instructions.
- + The skin and hair textures look highly realistic and natural.
- + The costume design is more cohesive and fits the 'classic' description well.
- − The background cityscape is significantly less detailed and more blurred/generic than Model A.
- − The lighting on the character is slightly flatter compared to the environment.
Verdict: Z-Image Turbo is the superior choice because it fully adhered to the specific posing instructions and delivered a more convincing 'photorealistic' human subject. While Stable Diffusion 3.5 Large produced a more spectacular and detailed urban background, it failed the core instruction of posing the superhero with her hands on her hips.
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
Stable Diffusion 3.5 Large
- + Successfully applied the requested 'subtle texture' to the light background.
- + Creative interpretation of the cloche dome with steam elements above and below.
- + Accurate and clear 'Est. 1720' text with ornamental flourishes.
- − Added an extra 'e' in 'Cafféé', failing the primary text requirement.
- − Conceptually confusing central graphic with steam overlapping a horizontal line.
Z-Image Turbo
- + Perfect text rendering for both 'Caffé Florian' and 'Est. 1720'.
- + Clean, professional vector emblem style that feels truly minimalist and balanced.
- + Appropriate use of warm brown and cream tones as requested.
- − The 'subtle texture' on the background is almost invisible compared to the other model.
- − The steam effect is very small and lacks the visual impact requested.
Verdict: Stable Diffusion 3.5 Large creates a much more atmospheric and textured image, but it fails on a core requirement by misspelling the brand name as 'Cafféé'. Z-Image Turbo produces a cleaner, more professional logo with perfect typography and better adherence to the 'minimalist vector' style, making it the superior choice for a usable logo design project.
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
Z-Image Turbo
Tongyi-MAI's 6-billion parameter distilled text-to-image model optimized for speed, achieving high-quality generation in 8 steps or fewer with support for bilingual text rendering