Seedream 4.5 vs Wan 2.6
Head-to-head across 13 challenges
Seedream 4.5
74.1%
win rate
Ties
0.0%
Wan 2.6
25.9%
win rate
Challenge Results
Man and Car in California
Editing“Make a photo of the man driving the car down the California coastline”
AI Judge Analysis
Seedream 4.5
- + Excellent preservation of the man's physical features, hairstyle, and specific outfit details from the source image.
- + Highly detailed car interior and door mechanism that matches the Rolls-Royce style from the source.
- + Natural interaction between the subject, the steering wheel, and the seat.
- − The open car door while driving creates a safety/logic error in the scene composition.
- − The lighting on the man feels slightly flat compared to the bright outdoor background.
Wan 2.6
- + Beautiful and vibrant California coastline scenery with motion blur on the road and wheels.
- + Dynamic and realistic lighting that blends the subject and car into the environment.
- + Great composition that captures a clear sense of movement.
- − Significantly altered the man's hair texture and facial structure compared to the source image.
- − The man's outfit lost the distinct plaid patterns and details visible in the original photo.
- − Minor artifacting where the man's hand meets the steering wheel.
Verdict: Seedream 4.5 excels at source preservation, keeping the man's face, hair, and complex plaid outfit perfectly intact while merging him into the vehicle. However, it makes a strange compositional choice to have the car door swinging open while driving. Wan 2.6 creates a much more cinematic and visually appealing environment with superior lighting, but it fails to maintain the specific likeness and clothing of the subject provided in the source image.
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
Seedream 4.5
- + Excellent typography with very high legible and logical text.
- + Very clean, minimalist aesthetic aligned with the 'modern' prompt requirement.
- + Food photography is high quality and looks appetizing.
Wan 2.6
- + Stronger adherence to the 'food photos in grid' instruction.
- + More complex and interesting design with vibrant accents.
- + Correctly displays multiple menu columns and a larger variety of dishes.
- − Text contains frequent gibberish and character artifacts.
- − The layout feels a bit cramped compared to the minimalist request.
- − Some food photos are repetitive copies of the same pizza.
Verdict: Seedream 4.5 produced a much cleaner and more professional-looking menu with surprisingly legible text, though it took a very simplified approach to the layout. Wan 2.6 followed the prompt's structural requirements for a grid and specific sections more closely, but suffered from significant text hallucinations and messy typography. Seedream 4.5 is preferred for its higher production quality and functional legibility.
Bald man challenge
Editing“Give the person a full, thick head of natural hair with realistic texture, density, and a natural hairline. Preserve facial features and lighting.”
AI Judge Analysis
Seedream 4.5
- + Perfect preservation of original facial geometry and background
- + Seamless blend of the new hairline with the existing forehead
- + Natural hair texture that matches the beard
- − Hair volume is relatively conservative compared to the request for 'full, thick' hair
Wan 2.6
- + Excellent interpretation of 'full, thick' hair with high volume
- + Realistic hair texture and flow
- − Significantly alters the person's facial structure, making him look like a younger/different person
- − Minor artifacts where the hair meets the side of the glasses
Verdict: Seedream 4.5 is the clear winner for image editing as it successfully adds the requested hair while perfectly preserving the identity of the person in the source image. In contrast, Wan 2.6 provides a more stylish hairstyle but fails the preservation requirement by heavily modifying the facial features and bone structure of the subject.
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
Seedream 4.5
- + Excellent text rendering and placement according to instructions
- + Strong PBR material qualities especially on the salmon texture
- + Higher overall resolution and detail in the 3D assets
- − The diorama base texture is a bit grainy compared to the requested soft textures
- − The flag icon is slightly orphaned to the right of the text rather than integrated smoothly
Wan 2.6
- + Clean isometric composition with a very clear diorama base
- + Accurate representation of the requested flag icon and text elements
- + Simple and effective cartoon/miniature aesthetic
- − The text layout is slightly off-center and 'SUSHI' is on the same line as the flag
- − The resolution and textures are noticeably softer/blurrier than the competitor
- − Materials look more like simple plastic than realistic PBR
Verdict: Seedream 4.5 captures the requested 'realistic PBR' quality much better, with superior detail in the sushi textures and cleaner text rendering. While Wan 2.6 follows the 'minimal' and 'miniature' aspect well, it lacks the sharpness and visual fidelity found in Seedream 4.5.
Night Sky Transformation
Editing“Change the scene to night: a deep, dark sky with subtle, glistening stars visible behind the mountain.”
AI Judge Analysis
Seedream 4.5
- + Excellent preservation of the original image details and structure.
- + Subtle, realistic transition to night sky.
- − Retains the warm sunset lighting on the mountain peak, which is inconsistent with the new dark sky.
Wan 2.6
- + Successfully changes the lighting on the mountain peak to match a night/moonlit scene.
- + Clearly visible stars as requested in the prompt.
- − The star pattern is somewhat repetitive and artificial.
- − Slight loss of mountain texture compared to the source.
Verdict: Both models do an excellent job of preserving the complex village details from the source image. Seedream 4.5 creates a more realistic transition but fails to update the lighting on the mountain peak, leaving a sunset glow under a dark sky; Wan 2.6 is the more successful edit as it adjusts the peak lighting to fit the nighttime atmosphere and provides the requested glistening stars.
Over-the-top cartoon caricature
Editing“Create a caricature of me and my job. Make it exaggerated and humorous, incorporating my profession as a tv show anchor and my love for dogs and hockey.”
AI Judge Analysis
Seedream 4.5
- + High level of facial resemblance to the source image while correctly applying the large-head 'caricature' effect.
- + Successfully integrates all professional and hobby elements (anchor desk, microphone, hockey stick, gloves, puck, and dog).
- + Maintains the realistic lighting and textures of the source material.
- − The transition between the desk and the sofa in the background creates some spatial confusion.
- − The hands to the left of the microphone are somewhat small and muddy in detail.
Wan 2.6
- + Strong illustrative caricature style that feels very fun and expressive.
- + Includes a fully realized studio environment that enhances the 'TV show anchor' theme.
- + Incorporates multiple dogs and hockey equipment in a clear, narrative way.
- − Loss of specific facial likeness from the original source image, moving toward a generic cartoon character.
- − Anatomical errors such as the pug's paw having humans hands to hold the stick.
- − Completely ignores the clothing and facial structure of the original subject.
Verdict: Seedream 4.5 is the clear winner because it maintains an impressive facial likeness to the original woman while creatively applying the caricature distortion. It seamlessly blends the hockey and broadcasting elements into one cohesive image. In contrast, Wan 2.6 provides a generic cartoon that does not resemble the source subject and contains several anatomical artifacts.
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
Seedream 4.5
- + Expertly captures the light filtering through the roof with soft God rays and realistic caustics on the floor.
- + Features highly detailed dew drops on the foreground leaves that add a sense of macro-realism.
- + The ornate ironwork includes beautiful stained-glass elements that enhance the Victorian aesthetic.
- − Fewer butterflies are present compared to the other model, and one appears to be floating without much motion blur.
- − The composition is a bit more crowded, focusing heavily on the foreground orchids.
Wan 2.6
- + Perfectly captures the 'misty atmosphere' and scale of a large Victorian conservatory.
- + Includes a wide variety of colorful butterflies in flight, distributed naturally throughout the scene.
- + The intricate white iron framework is highly detailed and consistent with historical Victorian glasshouses.
- − The lighting is somewhat flat and lacks the dramatic 'caustics' requested in the prompt.
- − Some of the butterflies in the background appear a bit static or like simple stickers.
Verdict: Seedream 4.5 excels in lighting and texture, producing beautiful dew drops and dramatic light rays that make the image feel like a high-end photograph. However, Wan 2.6 provides a better sense of scale and architectural detail, more accurately representing the atmosphere of a grand Victorian greenhouse filled with many butterflies. Seedream 4.5 is preferred for its superior rendering of light and fine details.
Studio Ghibli Anime Style
Editing“Transform this photo into a Studio Ghibli–inspired illustration. Use soft pastel colors, hand-painted textures, gentle lighting, dreamy backgrounds, and a warm, nostalgic mood”
AI judge analysis unavailable for this challenge.
Neutral Expression to Genuine Smile
Editing{
"action": "image_edit",
"reference": "uploaded neutral portrait",
"change": "Warm genuine Duchenne smile: lips curved up, slight natural teeth, soft eye crinkles, subtle cheek raise",
"details": "Realistic smiling skin (dimples if present, soft cheek shadows), slightly brighter eyes; keep exact eye shape/color/iris",
"preserve_exact": "Face identity/structure, eyes/nose/lips/eyebrows, hair, skin texture/pores/freckles, makeup, clothing, head pose, background, lighting, shadows, framing",
"no_changes": "No face shape change, no new features, no gaze shift, no hair/clothing/lighting/background edits",
"style": "Ultra-photorealistic 8K portrait, sharp face focus, natural soft lighting, realistic skin glow"
}
AI Judge Analysis
Seedream 4.5
- + Excellent preservation of the source image's identity and skin texture
- + Subtle and realistic eye crinkles
- + Clean teeth and mouth rendering
- − The smile is a bit more restrained and less 'Duchenne' than requested
- − Less pronounced cheek-raise compared to the other model
Wan 2.6
- + Stronger adherence to the 'Duchenne' criteria with significant cheek raise and eye crinkling
- + Genuine expressions of warmth through the mouth shape and eye narrowing
- + Perfect preservation of the original hair and background
- − Slightly altered the nose shape (appears a bit wider/rounder) during the smile
- − The skin texture on the cheeks looks slightly more processed/smoothed than the original
Verdict: Both models performed exceptionally well at preserving the source image while applying a complex expression change. Seedream 4.5 maintained the subjects' features with near-flawless accuracy but yielded a slightly more 'posed' smile, whereas Wan 2.6 achieved a more convincing 'warm and genuine' smile with better cheek elevation and eye crinkling, although it slightly modified the nose structure in the process.
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
Seedream 4.5
- + Excellent variety of textures including soft petals, waxy fruits, and rough seeds.
- + Creates a more complex, layered 3D effect with realistic interweaving of elements.
- + More sophisticated lighting with warm, soft shadows that enhance depth.
- − The symmetry is slightly organic/imperfect rather than 'perfectly symmetrical'.
- − The top-down angle is slightly tilted.
Wan 2.6
- + Achieves near-perfect radial symmetry across all elements.
- + Very clean, minimalist composition with specific inclusion of seeds and dried fruits.
- + Clear top-down perspective and consistent lighting.
- − The arrangement feels slightly more flat and less integrated than Model A.
- − Some elements, like the leaves, look identical/cloned, reducing the 'natural' feel.
Verdict: Both models followed the prompt well, but Seedream 4.5 produced a more artistically compelling image with rich, diverse textures and a beautiful interplay of light and shadow. While Wan 2.6 achieved better mathematical symmetry, it feels more like a digital collage of clipped assets, whereas Seedream 4.5 feels like a high-end photography piece with more natural depth.
Golden Hour Stroll
Editing“Add dynamic motion to this photo: make hair blow in the wind, add leaves flying, energetic and lively feel.”
AI Judge Analysis
Seedream 4.5
- + Excellent depiction of dynamic motion with horizontal hair flow and blurred foreground leaves.
- + The overall lighting and color grading successfully contribute to an 'energetic and lively feel'.
- + The person's pose is modified to look like they are in mid-stride, adding to the motion.
- − Low source preservation as the woman's face, clothing, and the background details have been significantly altered/regenerated.
- − The color of the leaves changed from green (source) to autumn brown.
Wan 2.6
- + Excellent source preservation, keeping the woman's face and clothing almost identical to the original.
- + Successfully added wind-blown hair and flying leaves while maintaining the original background.
- + Matches the green color of the existing trees for the flying leaves.
- − The 'motion' feels slightly less energetic compared to Model A due to the static pose of the subjects.
- − The flying leaves are a bit sparse and some look like flat overlays.
Verdict: Wan 2.6 is the superior model for this image editing task because it perfectly preserves the identity of the person and the details of the environment while accurately applying the requested hair and leaf effects. Seedream 4.5 creates a more dynamic and artistic result, but it fails as an 'edit' because it essentially regenerates a new person and changes the color palette of the scene.
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
Seedream 4.5
- + Excellent adherence to all text elements including the banner and correct date.
- + Balanced circular composition typical of a professional vector emblem.
- + Clean, classic typography that curves elegantly over the central icon.
- − Subtle texture on the background is very faint, appearing almost as a solid color.
Wan 2.6
- + Nice use of 'vintage' texture around the edges of the light background.
- + Correct spelling and accentuation on 'Caffè Florian'.
- + Clean vector style for the cloche icon.
- − Failed to place the date in a primary banner as requested, tucking it into a small, awkward flag on the side.
- − Composition is bottom-heavy with a large gap at the top.
- − The cloche and steam are slightly off-center relative to the text below.
Verdict: Seedream 4.5 is the clear winner as it perfectly followed the layout instructions, creating a cohesive emblem with the date correctly placed in a central banner. Wan 2.6 struggled with the composition, resulting in an unbalanced logo with a poorly integrated 'Est. 1720' element.
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
Seedream 4.5
- + Excellent adherence to the step-by-step infographic structure requested in the prompt.
- + Clean, legible typography and accurate spelling for all mission stages and names.
- + Precise vector style with a NASA-inspired color palette that matches the professional infographic aesthetic.
- − The icon for 'Descent' (step 5) looks like a satellite rather than a descending lunar module.
- − Minor visual overlap between the Saturn V and the Earth orbit ring.
Wan 2.6
- + Strong, minimalist poster aesthetic with good color choices.
- + Creative use of silhouettes for the crew members.
- − Completely failed to include the requested 6-step infographic content.
- − Large amount of empty space that serves no informational purpose.
- − Text layout on the silhouettes is slightly messy/overlapping.
Verdict: Seedream 4.5 followed the complex instructions perfectly, creating a detailed 6-stage infographic with icons and labels as requested. In contrast, Wan 2.6 produced a minimalist cover page that ignored almost all the specific content requirements regarding mission steps and iconography. Seedream 4.5 is the clear winner for its superior prompt adherence and functional design.
Seedream 4.5
ByteDance's latest image generation model unifying text-to-image and image editing in a single architecture, with improved text rendering and 30-40% faster generation than v4.0
Wan 2.6
Alibaba's text-to-image generation model from the Wan AI suite, supporting both Chinese and English prompts with optional reference image guidance for style