Nano Banana 2 vs Seedream 4.5
Head-to-head across 13 challenges
Nano Banana 2
50.0%
win rate
Ties
16.7%
Seedream 4.5
33.3%
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
Nano Banana 2
- + Perfect adherence to the spatial constraints of the prompt, including the sphere clearly inside and the plant behind the glass.
- + Exceptional photographic realism with natural textures on the wood, book, and plant.
- + Highly legible and relevant text on the book spine.
- − The glass cube lacks a top lid, resembling more of an open display case, though it functions well for the composition.
Seedream 4.5
- + Strong lighting and shadow work that matches the 'window light' request.
- + Solid rendering of the glass material with realistic thickness and refractions.
- − The blue sphere is clipping through the glass wall of the cube rather than being inside it.
- − The plant in the background is very blurry and lacks definition compared to Model A.
- − The cube geometry is slightly distorted where the corners meet the table.
Verdict: Nano Banana 2 followed all prompt instructions perfectly, creating a highly realistic scene with nested objects and clear background visibility through the glass. Seedream 4.5 struggled with physical coherence, showing the blue sphere clipping through the glass cube rather than sitting within it. Nano Banana 2 is the clear winner for its superior detail, correct spatial logic, and photographic quality.
Man and Car in California
Editing“Make a photo of the man driving the car down the California coastline”
AI Judge Analysis
Nano Banana 2
- + Expertly preserves the entire exterior design of the Rolls-Royce from the source image.
- + Successfully integrates the man's likeness (face and hair) into the driver's seat.
- + Excellent cinematic composition with the California coastline and motion blur on the wheels.
- − The man is positioned as a passenger in a right-hand drive car, but his hands are reaching toward a non-existent steering wheel on that side.
- − The man's outfit from the source image is only partially represented.
Seedream 4.5
- + Superior preservation of the man's entire outfit, including the specific plaid coat, scarf, cargo pants, and boots.
- + Correctly positions the man in the driver's seat for a left-hand drive vehicle.
- + Seamlessly blends the character into the interior of the car.
- − Significantly alters the car's geometry, with a door that opens incorrectly and a warped windshield frame.
- − Lacks the grand scale of the 'California coastline' requested, showing only a tight interior/roadside crop.
Verdict: Nano Banana 2 produces a much more visually appealing and professional-looking photograph that perfectly preserves the car's exterior, though it mistakenly places the man on the right side of the vehicle. Seedream 4.5 does an incredible job of preserving the man's complete outfit and likeness, but the image fails due to severe structural issues with the car's door and frame. Nano Banana 2 is the winner for creating a coherent, high-quality scene that fulfills the prompt's aesthetic requirements.
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 2
- + Excellent environmental storytelling with authentic Japanese signage and street context.
- + Very high level of detail in the tools, bicycle chain, and clothing textures.
- + Hyper-realistic rendering of wet pavement and reflections that feels like a genuine photograph.
- − The cars in the background lack the specific 'motion blur' requested, appearing relatively static.
- − The framing is quite central and balanced, missing the 'imperfect framing' request.
Seedream 4.5
- + Successfully captured the long-exposure motion blur of passing cars as requested.
- + Strong adherence to the 'shallow depth of field' and 'candid' feel with the subject looking toward the camera.
- + Good skin texture and expressive facial features.
- − The bicycle mechanics are nonsensical, with the wrench floating near a chain that isn't connected to a sprocket.
- − Visible AI artifacts around the hands and rain streaks.
- − The background is very generic and lacks the cultural specificity found in Model A.
Verdict: Nano Banana 2 produces a significantly more coherent and realistic image with impressive attention to detail in the mechanical elements and urban environment. While Seedream 4.5 followed the motion blur prompt more closely, it suffered from major anatomical and logical errors in how the man is interacting with the bicycle. Nano Banana 2 is the preferred choice for its superior image quality and believability.
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 2
- + Excellent text legibility and logical menu structure with relevant item names and descriptions.
- + Comprehensive grid layout for food photos that aligns perfectly with the prompt's request.
- + High level of detail in the food photography and professional use of branding and secondary text.
- − Minor typos in the fine print descriptions, such as 'somon' and 'metrons'.
- − Pricing symbols are slightly crowded against the right margin in the top sections.
Seedream 4.5
- + Clean, minimalist aesthetic with bold section headers.
- + Food photography is high quality and vibrantly colored as requested.
- + Good use of colorful border accents to differentiate sections.
- − Extremely repetitive and nonsensical text for menu items (e.g., 'Appetizters', 'Festaurant').
- − Missing the 12-photo 'grid' requested in the prompt, opting for only three large images.
- − The layout feels unbalanced with a lot of empty white space on the right of the text.
Verdict: Nano Banana 2 is the superior choice as it provides a fully functional, professional menu design with a sophisticated grid layout and highly legible text. Seedream 4.5 creates high-quality individual food images but fails significantly on the textual content and the specific grid structure requested in the prompt.
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
Nano Banana 2
- + Excellent realism in hair texture and flow
- + Perfectly preserved all original facial features, lighting, and background
- + Seamless blending between the new hair and the existing beard and sideburns
Seedream 4.5
- + Preserves the overall composition and lighting well
- − Noticeably altered facial proportions, making the person's face appear wider and taller
- − The hairline looks slightly artificial and disconnected from the original sideburns
- − Loss of fine skin detail and texture compared to the original
Verdict: Nano Banana 2 is the clear winner as it successfully added a realistic, high-quality head of hair while keeping every other pixel of the original image untouched. Seedream 4.5 failed the preservation aspect by subtly warping the man's head shape and altering his facial features during the edit process.
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 2
- + Excellent text rendering with 'JAPAN' and 'SUSHI' cleanly formatted.
- + Highly detailed materials for the sushi, wood grain, and diorama base.
- + Extremely sharp image quality with professional lighting.
- − The sushi looks more realistic than the '3D cartoon' style requested.
- − The diorama base is quite busy relative to the 'minimal' request.
Seedream 4.5
- + Perfectly captures the 'miniature 3D cartoon' aesthetic and isometric angle.
- + Follows the 'diorama base' and 'minimal garnish' instructions very accurately.
- + Clean, soft textures that match the prompt's stylistic direction.
- − The text is slightly less polished than Model A.
- − The background has a slight gradient rather than being a strictly solid color.
Verdict: Nano Banana 2 produces an incredibly high-fidelity image with perfect text, but it leans much closer to realism than the requested cartoon style. Seedream 4.5 captures the 3D cartoon miniature aesthetic much better and adheres more closely to the 'minimalist' and 'diorama base' aspects of the prompt.
Night Sky Transformation
Editing“Change the scene to night: a deep, dark sky with subtle, glistening stars visible behind the mountain.”
AI Judge Analysis
Nano Banana 2
- + Perfectly preserves the composition and structure of the original image.
- + Realistic conversion of lighting from sunset to moonlight/night across the mountain peaks.
- + Beautifully rendered starry sky with subtle milky way details that look integrated into the scene.
- − None identified.
Seedream 4.5
- + Excellent preservation of the foreground village and overall layout.
- + Successfully changes the sky to a night scene with stars.
- − Fails to realistically re-light the mountain peak, which retains the orange 'golden hour' glow from the sunset in the source image.
- − The lighting on the mountain contradicts the dark night sky, creating a visual inconsistency.
Verdict: Nano Banana 2 is the superior edit because it successfully adjusts the lighting on the mountain peaks to match the night sky, whereas Seedream 4.5 leaves the bright orange sunset glow on the Matterhorn. Nano Banana 2 also provides a more detailed and atmospheric starry sky while perfectly preserving all elements of the original village and landscape.
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 2
- + Excellent adherence to the 'humorous and exaggerated' caricature style.
- + Perfectly integrates all requested elements: news anchor setting, multiple dogs, and hockey gear.
- + Text rendering on the screen and microphone is clean and clever ('W-K9 NEWS').
- − Does not preserve the background or realism of the source image, opting for a complete drawing style.
Seedream 4.5
- + Great job preserving the facial features of the woman from the source image in a 'big head' caricature style.
- + High visual quality and resolution with realistic textures.
- + Successfully includes a dog, hockey equipment, and a news desk.
- − The 'humorous' and 'exaggerated' aspects are very mild compared to a traditional caricature.
- − The hockey stick brand name 'SIDE' is slightly garbled/nonsensical.
Verdict: Nano Banana 2 interprets the request as a classic hand-drawn caricature, resulting in a very high level of creativity and humor with excellent thematic integration. Seedream 4.5 takes a 3D-render approach that better preserves the subject's exact likeness and the source image's lighting, though it feels less 'exaggerated.' Nano Banana 2 is the winner for better capturing the spirit of a caricature and incorporating more playful details.
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.
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 analyzing...
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 2
- + Perfect text rendering for all lines including 'Caffè Florian' and 'Est. 1720'.
- + Excellent vector emblem composition with professional decorative borders and flourishes.
- + Accurately represents the historic context with the added location text.
- − The steam lines are slightly numerous, making it busy for a 'minimalist' request.
Seedream 4.5
- + Strong minimalist aesthetic with clean shapes and simple vector style.
- + Accurate typography and color palette according to prompt.
- + Good placement of the 'Est. 1720' banner.
- − Composition feels a bit empty compared to Model A.
- − Minor artifact on the steam lines where they don't quite align with the cloche handle.
Verdict: Nano Banana 2 is the superior choice because it delivers a complete, professional-grade emblem with perfect typography and sophisticated decorative elements. Seedream 4.5 captures the minimalist aspect well, but lacks the polish and cohesive design found in the Nano Banana 2 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
Nano Banana 2
- + Excellent adherence to the clean, modern vector style with consistent stroke weights.
- + Flawless text rendering for all steps and labels.
- + Very high quality icons that perfectly match the requested descriptions for each step.
- − Includes a fourth unnamed astronaut silhouette which is historically inaccurate.
- − The 'Tranquility' marker is placed on a map and then weirdly repeated inside a map pin.
Seedream 4.5
- + Great use of a timeline layout which works well for the 'Steps' requirement.
- + Accurately depicts the three named astronauts without extras.
- + Captures the requested NASA color palette effectively.
- − The icon for 'Descent' is a satellite with solar panels rather than a lunar module.
- − The composition feels a bit cramped at the top and bottom with a lot of empty space in the middle.
- − Iconography is slightly inconsistent in style compared to Model A.
Verdict: Nano Banana 2 produces a much more professional and aesthetically pleasing infographic with superior vector icons and crisp text. While Seedream 4.5 manages a more logical timeline layout and correctly identifies the three crew members, its technical execution is lower, specifically failing on the Descent icon which resembles a satellite rather than the lunar module. Nano Banana 2 is the better graphic design output despite the minor historical error of adding a fourth silhouette.
Nano Banana 2
Gemini 3.1 Flash with image generation capabilities. High-efficiency image generation model with support for text rendering, reference images, search grounding, and thinking mode. The efficient counterpart to Gemini 3 Pro Image.
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