Nano Banana vs Seedream 4.5
Head-to-head across 18 challenges
Nano Banana
37.5%
win rate
Ties
18.8%
Seedream 4.5
43.8%
win rate
Challenge Results
Magic Burger Explosion: Fiery Photorealism Challenge
Text-to-Image“Ad for 'Magic Burger'. Dynamic, exploded burger with all components (bun, patty, cheese, lettuce, tomato, sauce) suspended in mid-air. Emphasize photorealistic detail and a sense of motion. Dark, fiery background with glowing embers. Integrate text: 'MAGIC BURGER' as a prominent title, 'LIMITED TIME ONLY' as a secondary message, and '€6.99' in a starburst, all rendered with a fiery, glowing effect.”
AI Judge Analysis
Nano Banana
- + Excellent photorealistic texture on the meat patty and bun
- + Clean and highly legible typography for all text elements
- + Dynamic composition with a well-distributed 'exploded' look
- − The fiery effect on the text is a bit subtle compared to the prompt's request
Seedream 4.5
- + Superb adherence to the 'fiery, glowing effect' for all text elements
- + Strong sense of motion with visible speed trails behind ingredients
- + Very vibrant and impactful starburst for the price
- − Slightly less realistic texture on the hamburger bun compared to Model A
- − The lettuce and cheese layering feels a bit cluttered at the bottom
Verdict: Nano Banana excels in photorealistic food styling and clean layout, while Seedream 4.5 captures the 'fiery' and 'motion' atmosphere significantly better. Seedream 4.5 is the winner for creating a more cohesive and impactful advertisement that perfectly integrates the requested glowing text effects with the background theme.
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
Nano Banana
- + Excellent text rendering with almost perfect spelling across the entire menu.
- + Perfect adherence to the 'food photos in grid' prompt with high-quality imagery.
- + Very clean, professional, and balanced layout that looks like a real-world design.
- − Small spelling error in 'Appetiers' and 'Margheiita'.
- − Total price uniforming ($5 for everything) is slightly unrealistic for a functional menu.
Seedream 4.5
- + Strong 'vibrant accents' with the colorful borders around image sections.
- + Clean, modern sans-serif typography.
- − Nonsensical text and repetitive menu items (e.g., 'Pizza' listed twice, 'Restaurant' as a food item).
- − The layout is a list rather than the requested 'grid' for food photos.
- − General lack of professional coherence compared to a real menu.
Verdict: Nano Banana followed the prompt with high precision, creating a professional-grade grid layout with remarkably clear and mostly accurate text. Seedream 4.5 failed to provide a grid and suffered from significant text hallucinations and repetitive list items, making it much less usable as a design template.
The Halloween Invitation
Text-to-Image“Vintage gothic Halloween party invitation. Dark parchment poster, spooky border with webs and thorns, central glowing jack-o-lantern, bats, twisted trees, moody night sky. Add elegant gothic title text saying "Halloween Party Invitation", a small scroll banner saying "You are invited to a night of frights", and event details at the bottom: Date: 30.10.2026 Time: 7pm Location: The Arches, NYC Spooky but polished, cinematic lighting, square format.”
AI Judge Analysis
Nano Banana
- + Excellent text rendering with no spelling errors across Title, Banner, and Details.
- + Very intricate border of thorns and webs that creates a high-quality vintage look.
- + Superior layout with clean alignment of the event details at the bottom.
- − The pumpkin floating in an aura of fire might be slightly less 'vintage' and more 'digital art' than requested.
- − The background silhouettes of trees are a bit thin and repetitive.
Seedream 4.5
- + Strong cinematic lighting on the jack-o-lantern and foreground ground texture.
- + Good adherence to the 'twisted trees' prompt with thick, gnarled trunks.
- + Accurate text spelling throughout the composition.
- − The border features barbed wire rather than thorns, which feels less gothic.
- − The layout of the event details at the bottom is uneven and lacks professional typography balance.
- − The placement of the scroll banner overlaps the top of the pumpkin awkwardly.
Verdict: Nano Banana is the clear winner as it provides a much more polished and professional layout for an invitation, with perfectly aligned text and a stunningly detailed thorn-and-web border. While Seedream 4.5 has nice cinematic lighting, its inclusion of barbed wire instead of thorns and its messy text layout at the bottom make it less effective as a graphic design piece.
Outfit Transfer Challenge
Editing“Use Image 1 as the base person. Dress them in the exact elaborate outfit from Image 2 (including all layers, accessories, jewelry, and shoes). Carefully adapt the clothing to the body shape and pose in Image 1 while maintaining realistic fabric behavior, correct proportions, and perfect lighting/shadow matching. Keep the person’s exact face, hair, and background completely unchanged.”
AI Judge Analysis
Nano Banana
- + Perfectly maintains the person's identity, face, and hair from Image 1.
- + Accurately recreates the coat, scarf, and jeans from Image 2.
- + Maintains the background and framing of Image 1 without any distortion.
- − The lighting on the hands does not perfectly match the ambient beach lighting.
- − The scarf pattern is slightly simplified compared to the source image.
Seedream 4.5
- + Includes more details like the watch and ring from Image 2.
- + Good texture on the coat fabric.
- − Fails to keep the person's face and hair unchanged, blending Image 1 with Image 2 instead.
- − The subject is looking down, which ignores the request to maintain the exact person and pose from Image 1.
- − The rendering of the skin on the chest is messy/unnatural.
Verdict: Nano Banana followed all instructions, particularly the negative constraint to keep the person's face and hair completely unchanged from the base image. Seedream 4.5 failed the primary instruction by merging the faces of both people and changing the hairstyle/pose, which went against the core of the editing request.
Man and Car in California
Editing“Make a photo of the man driving the car down the California coastline”
AI Judge Analysis
Nano Banana
- + Excellent preservation of the source car's scale and orientation
- + Realistic motion blur on the road and wheels
- + Correctly captures the requested California coastline scenery
- − The man is very small and lacks detail
- − The man is placed in the passenger seat instead of the driver's seat
Seedream 4.5
- + Perfect preservation of the man's identity, hair, and outfit
- + High level of detail on the car's interior and exterior
- + Man is correctly positioned in the driver's seat
- − Anomalous open car door while the vehicle is in motion
- − The car's door and interior layout appear physically impossible/glitched at the bottom hinge area
Verdict: Seedream 4.5 is the clear winner for its superior ability to preserve the subject's identity and specific clothing. While Nano Banana captures the overall scene well, it places the man in the wrong seat and loses all facial detail. Despite Seedream 4.5's odd choice to leave the car door open, it creates a much more convincing composite of the two source images.
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
Nano Banana
- + Excellent photographic quality and lighting
- + Captures the spatial relationship of all elements perfectly
- + The plant is lush and clearly visible through the glass
- − The sphere appears to be floating mid-air within the cube rather than resting
Seedream 4.5
- + Correctly identifies all scene elements
- + Good glass refraction and reflection on the table
- − The cube geometry is distorted and lacks a clear top face
- − The plant is poorly defined and blurry
- − The blue sphere is merged with the glass edge in a physically impossible way
Verdict: Nano Banana is the clear winner as it produces a highly realistic photograph with beautiful soft lighting and logical composition. Seedream 4.5 struggles with the geometry of the glass cube and the rendering of the plant, resulting in a much less convincing image.
Pose & Character Mashup
Editing“Use Image 1 as the exact pose reference and Image 2 as the character reference. Recreate the person/character from Image 2 in the exact dynamic pose and body position from Image 1. Keep the exact face, hair, clothing style/details, and expression from Image 2. Match the lighting and environment of Image 1. The final image must show the character from Image 2 performing the precise action/pose from Image 1 with perfect anatomy and natural integration.”
AI Judge Analysis
Nano Banana
- + Successfully integrated clothing items into the pose of Image 1.
- + Maintained the exact complex leg cross of the source pose.
- − Failed to change the character's identity, keeping the female face and hair from Image 1.
- − Sunglasses and scarf are poorly composited and look like floating stickers.
- − Hands and fingers are distorted.
Seedream 4.5
- + Perfect character consistency, accurately transferring the man's face, hair, and accessories.
- + Excellent integration of the black sweatshirt and scarf texture.
- + Good foot and hand anatomy while maintaining the pose.
- − Modified the leg position slightly from the source, losing the extreme crossing of the feet.
- − Lower hand has painted fingernails from the original image character.
Verdict: Nano Banana failed the primary objective of changing the character, essentially just overlaying assets onto the woman from Image 1. Seedream 4.5 successfully recreated the man from Image 2 in the requested pose with high visual fidelity and natural-looking lighting integration, despite a minor change to the leg positioning.
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
Nano Banana
- + Excellent environmental storytelling with the newspaper and tools
- + Stronger sense of place through the background architecture and lanterns
- + Captures the 'light rain' and pavement reflections beautifully
- − The car in the background is static rather than showing the requested motion blur
- − Composition feels a bit too balanced for 'imperfect framing'
Seedream 4.5
- + Perfectly captures the motion blur of passing cars as requested
- + More realistic skin texture and direct eye contact for a candid feel
- + Better adherence to 'imperfect framing' with a tighter, more spontaneous crop
- − The rear wheel/chain geometry and the wrench placement are physically nonsensical
- − The rain effect looks like static vertical lines rather than atmospheric droplets
Verdict: Nano Banana creates a much more aesthetically pleasing and coherent scene with superior details in the bicycle and environment, though it misses the motion blur requirement. Seedream 4.5 captures the specific 'candid' and 'motion blur' elements of the prompt more accurately, but suffers from significant AI hallucinations in the bicycle's mechanical structure. Nano Banana is the preferred image for its overall quality and believability.
The Capybara Taxi Driver
Text-to-Image“Photorealistic scene inside a yellow New York taxi at night. A capybara is driving, wearing a yellow taxi driver cap and a dark jacket. It has a calm, professional expression and both front paws on the steering wheel. In the back seat sits a human businesswoman in a coat, looking at her phone with a completely normal, bored expression (as if this is just another normal ride). Through the windows you can see the streets of Manhattan at night with blurred lights. Realistic taxi interior, photorealistic, detailed fur and fabric, 35mm lens, night lighting with reflections, shallow depth of field.”
AI Judge Analysis
Nano Banana
- + Excellent fur and leather texture realism
- + Strong cinematic lighting consistent with a night scene
- + Dynamic side-view composition
- − Failed the spatial requirement by placing the passenger in the front seat instead of the back seat
- − The capybara's paw grip on the steering wheel looks anatomically awkward
Seedream 4.5
- + Perfect adherence to character positioning with the passenger in the back seat
- + Clear text rendering on the taxi cap
- + The front-facing composition clearly shows both 'paws' on the wheel as requested
- − Slightly lower overall photographic realism compared to Nano Banana
- − Background bokeh is a bit more generic
Verdict: Nano Banana has superior textures and lighting, but completely failed to place the passenger in the backseat as requested in the prompt. Seedream 4.5 followed all spatial instructions accurately, depicting the bored businesswoman in the rear and the capybara in the front, making it the more successful image for this specific prompt.
Chalkboard Menu
Text-to-Image“Handwritten-style chalkboard menu in a cozy café, all text rendered in the exact same realistic chalk handwriting style with natural variations in letter size, slight slant, and chalk texture — no printed or digital fonts anywhere on the board. Title at the top in elegant cursive chalk handwriting: ‘TODAY’S SPECIALS – APRIL 30, 2026’. Below it, three menu items also in the same handwritten chalk style: ‘Truffle Mushroom Risotto – $24’, ‘Grilled Octopus with Lemon & Herbs – $28’, ‘Brown Butter Chocolate Chip Cookies – $9’. At the very bottom, smaller text in the identical handwritten chalk style (slightly smaller but still clearly legible with the same handwriting characteristics): ‘All items made fresh daily • Ask about our gluten-free options’. Warm ambient café lighting, visible chalk dust and smudges, realistic handwriting imperfections, no clean printed text anywhere.”
AI Judge Analysis
Nano Banana
- + Excellent chalk texture throughout the lettering
- + Successfully completed the truncated prompt for the final cookie item
- + Very clean and aesthetic background composition
- − The font looks slightly digital/uniform despite the chalk texture
- − The '9' in '$9' is cut off at the edge
Seedream 4.5
- + Features more realistic, variable handwriting that feels truly organic
- + Excellent chalk dust effects and smudges on the board surface
- + Accurately rendered all requested text with natural spacing
- − Repeated the price '$24' on a second line for the risotto
- − Background is slightly less focused on the 'cozy cafe' atmosphere compared to A
Verdict: Both models followed the complex prompt very well, but Seedream 4.5 captures the 'handwritten' request much more effectively with its varied letterforms and realistic chalk dust textures. Nano Banana created a beautiful image, but the text looks a bit too much like a consistent digital font overlay rather than natural handwriting.
Bald man challenge
Image 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
Nano Banana
- + Excellent realism in hair texture and stray strands
- + Maintains the lighting and color palette of the original image perfectly
- + Natural-looking hairline that blends seamlessly with the forehead
- − The glasses frames are slightly warped/melted into the temple area near the ear
Seedream 4.5
- + Strong prompt adherence regarding volume and density
- + Perfectly preserves the glasses and facial features without distortion
- + Integrates the hair well with the existing beard
- − The hairline transition is a bit soft and lacks the fine detail of individual hairs
- − The texture of the hair feels slightly smoother and less 'natural' compared to Model A
Verdict: Both models did an excellent job of following the edit instructions while preserving the source image's identity. Nano Banana (Model A) provides much more realistic hair texture with convincing flyaways and lighting, but it introduces a minor artifact by warping the glasses frame. Seedream 4.5 (Model B) preserves the glasses perfectly and offers a very plausible head of hair, though the hairline is slightly less detailed than Nano Banana's.
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
Nano Banana
- + Perfectly rendered text and flag icon exactly as requested.
- + Clean, 3D clay-like aesthetic with soft lighting.
- + Accurate sushi varieties including maki and nigiri.
- − The rice texture is slightly repetitive and feels more like beads than cohesive grain.
Seedream 4.5
- + Excellent PBR materials with realistic subsurface scattering on the fish.
- + Beautiful depth of field and soft lighting that enhances the miniature feel.
- + Dynamic composition with a well-modeled diorama base.
- − The flag icon is placed to the side rather than following the 'Japan/Sushi/Flag' vertical hierarchy requested.
- − The diorama base texture is a bit gritty, leaning away from the 'ultra-clean' requirement.
Verdict: Nano Banana followed the layout instructions more precisely, especially regarding the text placement and the clean, isometric look. Seedream 4.5 produced a more visually sophisticated image with superior material rendering and realistic lighting, though it took some creative liberties with the requested text layout.
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
Nano Banana
- + Expertly captures the 'caricature' art style with exaggerated proportions and clean linework.
- + Creatively integrates all prompt elements into a cohesive scene (hockey arena studio, dog in a jersey with a helmet).
- + Humorous touches like the muscular arm and 'Dog Scores Goal' headline add personality.
- − Moves away from the photographic source, turning the person into a 2D illustration.
- − One hand appears incorrectly shaped/attached to the dog's head.
Seedream 4.5
- + Maintains a strong facial likeness to the original source image while applying some caricature proportions.
- + Successfully includes all requested elements: anchor desk, microphone, dog, and hockey gear.
- + Preserves the realistic lighting and texture of the original face.
- − The 'exaggeration' is limited almost entirely to just a larger head, lacking the humor of Model A.
- − The hands are poorly rendered and too small for the body.
Verdict: Nano Banana interprets the prompt creatively by creating a full 2D caricature scene that feels humorous and thematic, though it loses the realism of the source face. Seedream 4.5 maintains a better likeness and realistic style but the 'caricature' effect is less successful and the anatomy of the hands is significantly distorted. Nano Banana is the winner for better understanding the spirit of a caricature and delivering a more polished, humorous final product.
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 unavailable for this challenge.
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.
Golden Hour Stroll
Image Editing“Add dynamic motion to this photo: make hair blow in the wind, add leaves flying, energetic and lively feel.”
AI Judge Analysis
Nano Banana
- + Excellent source preservation, maintaining the identity and details of the original woman and dog
- + Subtle but effective hair movement that looks natural
- + Added autumn leaves look integrated into the scene
- − The 'lively and energetic' feel is a bit more static compared to the competitor
- − Small digital artifacts around some of the added leaves
Seedream 4.5
- + Strong sense of movement with motion blur on the ground and foreground leaves
- + Dynamic hair wind effect is very pronounced
- + Successfully captured the requested 'energetic and lively' feel
- − Significantly altered the woman's face and original features
- − The dog's face and eyes have changed noticeably from the source image
- − Background elements like the bridge and distant trees have been completely regenerated
Verdict: Nano Banana followed the instructions while perfectly preserving the source image, making it a superior editing tool. Seedream 4.5 creates a more dynamic and aesthetically pleasing 'motion' scene but fails as an editor by completely regenerating the subject's face, the dog, and the background details.
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
Nano Banana
- + Perfect circular emblem composition
- + Excellent typography and character rendering
- + Elegant implementation of the steam and cloche details
- − Steam is inside the cloche rather than rising above it
Seedream 4.5
- + Bold, clean vector style
- + Steam is correctly positioned above the cloche
- + Accurate text rendering and banner layout
- − Lacks the cohesive circular border requested for an emblem style
- − The proportions of the cloche are slightly flatter and less elegant
Verdict: Nano Banana creates a more sophisticated and cohesive emblem with better integrated typography and a classic circular frame. Seedream 4.5 is very clean and accurately follows the banner and steam placement, but Nano Banana feels more like a finished 'vintage minimalist' brand 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
Nano Banana
- + Excellent text rendering for all steps and names.
- + Highly consistent iconography within rounded containers.
- + Perfect adherence to the flat-vector style with professional layout.
- − The iconography for 'Descent' is nearly identical to 'Lunar Orbit'.
- − Uses glow/outer shadow effects which leans slightly away from 'subtle gradients only'.
Seedream 4.5
- + Clear timeline structure with numbered steps and distinct illustrations.
- + Includes a more detailed and accurate Saturn V and Lunar Module illustration.
- + Follows the color palette accurately.
- − The illustration for 'Descent' appears to be a generic satellite rather than a lunar module.
- − The 'Tranquility' icon at the bottom is disconnected from the main infographic layout.
- − The 'Translunar' icon is just a dashed line ending in space without reaching the moon.
Verdict: Nano Banana is the winner because it provides a more cohesive and professional infographic design with superior text rendering and consistent iconography. While Seedream 4.5 has some more detailed illustrations, its layout is slightly disjointed and it incorrectly depicts the descent stage as a solar-paneled satellite.
Nano Banana
Gemini 2.5 Flash Image is optimized for image understanding and generation, offering a balance of price and performance with fast and efficient image generation and editing capabilities.
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