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Nano Banana 2 Google Seedream 4.0 ByteDance

Settled by community votes across 12 shared challenges, with an AI judge weighing in on each.

Nano Banana 2

29.0 arena score

#1 of 44 in Text-to-Image

Best Text-to-Image right now Top 2 in Image Editing
Skill signature

Not enough comparable category data

The chart appears once both models have ratings across at least three shared arena categories.

Seedream 4.0

24.6 arena score

#16 of 44 in Text-to-Image

Vote tally

Where the votes landed

Nano Banana 2

100.0%

win rate

Ties

0.0%

Seedream 4.0

0.0%

win rate

100.0% 0.0% ties 0.0%
Shared challenges 12

Challenge by challenge

The strongest take from each model on every shared challenge, with the AI judge's read.

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.”

Nano Banana 2
Seedream 4.0

AI Judge Analysis

Nano Banana 2

  • + Excellent photorealistic texture on the wooden table and red book.
  • + Highly legible and relevant text on the book spine.
  • + Perfect adherence to the spatial arrangement including the window light direction.
  • The glass cube looks more like a five-sided tank or open-faced box as the top edge is slightly ambiguous.

Seedream 4.0

  • + Strong geometric representation of the glass cube with clear edges.
  • + Beautiful caustic light effects on the table surface.
  • + Captures the soft window light and depth of field effectively.
  • The perspective of the book on top of the cube feels slightly misaligned.
  • The blue sphere appears somewhat flat compared to the realism of Model A.

Verdict: Both models followed the prompt perfectly, placing all elements in the correct spatial relationships. Nano Banana 2 stands out for its superior textural details and impressive text rendering on the book, while Seedream 4.0 excels in rendering complex light refractions and caustics through the glass.

Man and Car in California

Editing
Edit instruction

“Make a photo of the man driving the car down the California coastline”

Source
Nano Banana 2
Seedream 4.0
100% wins 0% ties 0% wins

AI Judge Analysis

Nano Banana 2

  • + Excellent preservation of the car's model and lighting details.
  • + High-quality background generation featuring a classic Big Sur style coastline.
  • + The man's likeness, hair, and clothing are remarkably consistent with the source image.
  • The driver appears to be sitting slightly too far back relative to the steering wheel.
  • The man is looking at the camera rather than the road while driving.

Seedream 4.0

  • + Excellent driving posture with hands correctly positioned on the steering wheel.
  • + Very accurate translation of the man's wardrobe (coat and scarf) into the seated position.
  • + Preserves the car's specific design elements from the source image.
  • The man's facial features are less distinct and lower quality compared to the source image.
  • The background rendering is slightly more Painterly and less photo-realistic than Model A.

Verdict: Both models performed exceptionally well at this complex image-to-image task, combining two source images into a new environment. Nano Banana 2 has superior image clarity and does a better job of preserving the man's facial likeness, while Seedream 4.0 provides a more realistic driving pose and better integration of the clothing.

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.”

Nano Banana 2
Seedream 4.0

AI Judge Analysis

Nano Banana 2

  • + Excellent atmospheric lighting with realistic reflections on wet pavement.
  • + High level of detail in the bicycle mechanics and tools.
  • + Authentic urban Japanese setting with readable signage and a cinematic feel.
  • The bicycle chain is physically detached and floats oddly near the man's hands.
  • Small anatomical glitch with the number of fingers on the right hand holding the wrench.

Seedream 4.0

  • + Strong adherence to the 'motion blur from passing cars' requirement.
  • + Natural skin texture and realistic, aged appearance of the subject.
  • + Good composition with clear reflections in the puddles.
  • The bike anatomy is messy, particularly the pedals and the way the frame connects.
  • Visual quality is slightly lower with softer details compared to the first image.

Verdict: Nano Banana 2 produces a much more vibrant and detailed scene with professional-grade lighting and a convincing Japanese street atmosphere. While Seedream 4.0 better captures the specific request for motion blur on passing cars, its overall image quality is softer and the bicycle's geometry is quite distorted.

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.”

Nano Banana 2
Seedream 4.0

AI Judge Analysis

Nano Banana 2

  • + Excellent adherence to the full prompt including specific sections and prices.
  • + Highly professional layout with clean typography and organization.
  • + Remarkable text clarity and logical structure for a restaurant menu.
  • Small typos in some of the smaller menu descriptions.
  • The placement of the 'Mains' label is slightly off-center relative to the grid.

Seedream 4.0

  • + Good use of white space and bold sans-serif fonts.
  • + Food photos are high quality and appetizing.
  • Fails to generate an actual menu layout, providing only headers and photos.
  • Missing menu items, descriptions, and pricing as implied by the prompt.
  • The grid composition is unbalanced and lacks a professional structure.

Verdict: Nano Banana 2 followed the prompt perfectly, delivering a complete, professional-looking menu with logic sections, pricing, and legible text. Seedream 4.0 failed to create a functional menu design, instead producing an abstract collage of photos and headers that lacks utility for casual dining.

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.”

Nano Banana 2
Seedream 4.0

AI Judge Analysis

Nano Banana 2

  • + Perfect text rendering for all lines including title, banner, and details
  • + Highly coherent and symmetrical gothic border design
  • + Clean, professional illustrative style that feels like a finished product
  • The border is more architectural/ornate than the 'webs and thorns' requested, though webs are present

Seedream 4.0

  • + Stronger adherence to the 'webs and thorns' border description
  • + Atmospheric 3D lighting on the pumpkin
  • + Good parchment paper texture effects
  • The secondary banner text is distorted and barely legible
  • The border framing feels cluttered and encroaches on the central subject
  • Typography is inconsistent compared to the first image

Verdict: Nano Banana 2 is the clear winner because it successfully rendered every piece of text requested with perfect legibility and elegant gothic typography. While Seedream 4.0 had a slightly more literal interpretation of the thorn border, its failure to render the banner text correctly and its messy composition make it less effective as a functional invitation.

Bald man challenge

Image Editing
Edit instruction

“Give the person a full, thick head of natural hair with realistic texture, density, and a natural hairline. Preserve facial features and lighting.”

Before After
Nano Banana 2
Before After
Seedream 4.0

AI Judge Analysis

Nano Banana 2

  • + Integrated the hair seamlessly with the existing facial structure and forehead.
  • + Maintained high local detail and realistic hair strands.
  • + Perfectly preserved the background and the subject's clothing/lighting.
  • The hairline is slightly low on the forehead.

Seedream 4.0

  • + Followed the 'full, thick head of hair' instruction literally with high volume.
  • The hair looks like a poorly blended wig, with a distinctive 'cut-out' look around the hairline.
  • Altered the shape of the skull and forehead significantly, losing the original likeness.
  • The hair texture is somewhat blurry and lacks the fine strand detail found in Model A.

Verdict: Nano Banana 2 provided a much more realistic and high-quality edit, blending the new hair naturally with the subject's existing features and lighting. Seedream 4.0 created a volume-heavy hairstyle that looks artificial and poorly composited, significantly altering the subject's forehead and facial proportions in an unconvincing way.

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.”

Nano Banana 2
Seedream 4.0

AI Judge Analysis

Nano Banana 2

  • + Excellent text rendering with clean, professional-looking typography.
  • + Highly detailed and realistic textures on the sushi fish and rice.
  • + Sophisticated diorama base with moss and additional props like chopsticks and soy sauce.
  • Leans more toward photorealism than the requested 'cartoon' style.
  • The composition is slightly busy compared to the 'minimal' request.

Seedream 4.0

  • + Perfectly captures the 'cartoon' and 'miniature' 3D aesthetic requested.
  • + Simple, clean isometric composition that feels like a game asset.
  • + Followed the requests for a minimal garnish and a small raised diorama board.
  • Text rendering is slightly less refined with a slight artifact on the 'N' in JAPAN.
  • Lower level of detail in the food textures compared to the competitor.

Verdict: Nano Banana 2 produces a stunningly detailed image with superior text and material physics, though it veers away from the 'cartoon' descriptor toward realism. Seedream 4.0 captures the requested 3D cartoon miniature aesthetic much better, providing a clean and playful isometric scene, even if the text and textures are simpler. Nano Banana 2 is the preferred choice for its sheer visual quality and technical execution of the complex text and flag layout.

Over-the-top cartoon caricature

Editing
Edit instruction

“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.”

Source
Nano Banana 2
Seedream 4.0
100% wins 0% ties 0% wins

AI Judge Analysis

Nano Banana 2

  • + Captures all requested elements including hockey, dogs, and the news anchor profession with clever integration like 'W-K9 NEWS'.
  • + Exquisite caricatured version of the subject's face while maintaining recognizable features and expression.
  • + Excellent text rendering with humorous puns that fit the theme.
  • Moves away from the original photograph's 'reality' to a hand-drawn illustration style, which may not be the desired format for an edit.
  • The composition is a completely new scene rather than an edit of the provided background.

Seedream 4.0

  • + Maintains a high level of source preservation by keeping the background elements (sofa, pictures, plant) from the original photo.
  • + Correctly applies the caricature proportions (large head/mouth) while maintaining a photographic texture.
  • + Effectively merges the anchor desk and hockey themes into the physical setting of the original room.
  • Hand and phone rendering is slightly warped and lacks the polish of the face caricature.
  • The hockey and dog elements are a bit more static and less integrated into the 'story' of the image compared to the other model.

Verdict: Nano Banana 2 creates a brilliant and humorous hand-drawn caricature that expertly weaves together all the prompt elements with witty details, though it abandons the original photo's style entirely. Seedream 4.0 performs a more literal 'edit' by keeping the woman in her original living room but transforming her into a caricature and adding physical props. While Seedream 4.0 better preserves the source image context, Nano Banana 2 is the superior caricature in terms of artistic quality, humor, and prompt integration.

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.”

Nano Banana 2
Seedream 4.0

AI Judge Analysis

Nano Banana 2

  • + Perfect adherence to the animal count and species list.
  • + Excellent anatomical realism for each animal.
  • + Very clean and sharp rendering of individual blades of grass and wildflowers.
  • The composition feels a bit like a lineup rather than an integrated interaction.
  • The lighting is slightly flat compared to the dramatic 'god rays' requested.

Seedream 4.0

  • + Extremely dynamic and playful composition with animals 'tumbling' as requested.
  • + Beautiful lighting with strong god rays and sparkling dew effects.
  • + High emotional impact and whimsical atmosphere.
  • The tabby kitten's face is slightly distorted and lacks the realism of Model A.
  • The 'fox kit' has a very unusual white chest and red coloring that looks a bit more illustrative than photorealistic.

Verdict: Nano Banana 2 produces a more grounded and anatomically accurate set of animals, successfully including all four requested species with high clarity. Seedream 4.0 captures the 'tumbling' and 'joyful' vibe much better through its dynamic composition and superior lighting effects, though it struggles slightly with the fine details of the animals' faces. Nano Banana 2 is the preferred choice for its technical precision and adherence to the prompt's specific animal subjects.

Studio Ghibli Anime Style

Editing
Edit instruction

“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”

Source
Nano Banana 2
Seedream 4.0
100% wins 0% ties 0% wins

AI Judge Analysis

Nano Banana 2

  • + Excellent preservation of the original pose, expressions, and clothing details
  • + Strong Studio Ghibli aesthetic with clean line work and watercolor textures
  • + Richly detailed background that adds to the European Ghibli atmosphere
  • The red dress is slightly desaturated compared to the source
  • The background is significantly more complex than the original, though it fits the theme

Seedream 4.0

  • + Captured the watercolor Ghibli style very effectively
  • + Good use of soft, dreamy lighting and pastel tones
  • Faces are overly simplified and lost the specific nuance of the original meme expressions
  • Background is mostly lost to abstract watercolor washes
  • Character likeness is weak compared to the original photo

Verdict: Nano Banana 2 is the clear winner as it successfully transforms the image into a Ghibli illustration while perfectly preserving the iconic expressions and composition of the original 'Distracted Boyfriend' meme. Seedream 4.0 captures a nice watercolor texture but fails to maintain the specific emotions on the faces, resulting in a much more generic and less recognizable transformation.

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.”

Nano Banana 2
Seedream 4.0

AI Judge Analysis

Nano Banana 2

  • + Excellent adherence to the 'vector emblem style' with a cohesive circular frame.
  • + Precise typography and accurate rendering of the requested 'Caffè Florian' and 'Est. 1720' text.
  • + Sophisticated retro detailing on the cloche and banner that fits the vintage theme well.
  • The illustrative lines on the cloche are slightly busier than a strictly 'minimalist' prompt might require.

Seedream 4.0

  • + Clean, minimalist layout that feels open and modern-vintage.
  • + Correct text rendering and warm color palette as requested.
  • + Good use of subtle texture on the background and within the cloche shading.
  • The 'Est. 1720' banner feels a bit flat and less integrated compared to Model A.
  • Lacks the 'emblem' feel requested by the prompt, appearing more as a floating graphic.

Verdict: Nano Banana 2 followed the 'vector emblem' requirement much better by creating a fully contained, professional-looking circular logo. Seedream 4.0 produced a high-quality graphic, but Nano Banana 2's attention to the specific decorative elements like the banner integration and the accent mark on 'Caffè' makes it the superior choice for a restaurant identity.

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.”

Nano Banana 2
Seedream 4.0
100% wins 0% ties 0% wins

AI Judge Analysis

Nano Banana 2

  • + Excellent typography with clean, professional font rendering.
  • + Strict adherence to the requested flat-vector style and NASA color palette.
  • + Superior composition with a balanced, grid-based infographic layout.
  • Included a fourth generic astronaut icon alongside the three named crew members.
  • The Saturn V rocket illustration is a bit stylistically elongated.

Seedream 4.0

  • + Accurately followed the numbered step sequence 1 through 6.
  • + Correctly identified and named only the three mission astronauts.
  • + Good use of the requested color palette.
  • Visual quality is lower with some jagged lines and 'AI-style' artifacts on icons.
  • The composition feels more cluttered and less like a professional vector poster.
  • The lunar module icon is missing for the Landing step, opting for a generic arrow.

Verdict: Nano Banana 2 produces a much more professional-grade infographic with crisp vector lines and excellent text rendering that looks like genuine graphic design. While Seedream 4.0 followed the specific logic of the crew count better, its overall visual execution is significantly lower in quality, appearing more like a rough sketch than a finished poster.

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