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Head to head

Nano Banana 2 vs Seedream 5.5

By Elo rating, Seedream 5.5 is expected to win 59% of comparisons against Nano Banana 2.

Both models received the same prompts. Wins and losses count only images judged together in the same call, the same comparisons the leaderboard Elo is fitted from.

Nano Banana 2
Google
1088 Elo ±39
Rank #15 of 45 · median 16s per image
Not judged in the same call yet
Elo expectation: Nano Banana 2 wins 41%
Seedream 5.5
Bytedance
1148 Elo ±45
Rank #11 of 45 · median 21s per image · 4 refused

By category

CategoryNano Banana 2Seedream 5.5Direct record
Anime & Cartoon Style 1173 1337 —
Architecture & Interiors 1026 1249 —
Complex Scenes 1110 1117 —
Ghibli style 1133 1275 —
Graphic Design 1064 1074 —
Hands & Anatomy 1051 1128 —
Photorealistic People & Portraits 1040 1185 —
Surreal & Creative Prompts 1143 1112 —
Text in Images 1138 1037 —
Ultra Hard 1084 1192 —

By criterion

CriterionNano Banana 2Seedream 5.5
Prompt adherence 1093 1024
Technical quality 1055 1157
Artistic merit 1074 1156
Detail execution 1093 1159
Realism & coherence 1048 1191

Side by side

Anime & Cartoon Style An anime-style portrait of a samurai standing under pink cherry blossoms.
An anime-style portrait of a samurai standing under pink cherry blossoms. - Nano Banana 2
Nano Banana 2 8 / 10
Judge's noteRank 5 of 13: excellent anime atmosphere and strong, direct prompt fulfillment. Minor hand stiffness and crowded sword-side construction prevent it from matching the top tier.
An anime-style portrait of a samurai standing under pink cherry blossoms. - Seedream 5.5
Seedream 5.5 10 / 10
Judge's noteRank 1 of 12: the most complete integration of anime styling, convincing construction, expressive composition, and spring color. It reads as finished professional artwork without a conspicuous flaw that meaningfully detracts from the requested image.
Architecture & Interiors An ancient Roman bathhouse interior with accurate architectural details - marble columns, mosaic floors, arched ceilings, and steam rising from pools. Natural light from oculus openings.
An ancient Roman bathhouse interior with accurate architectural details - marble columns, mosaic floors, arched ceilings, and steam rising from pools. Natural light from oculus openings. - Nano Banana 2
Nano Banana 2 6 / 10
Judge's noteRanked 9th of 13 because its strong architectural composition is undermined by inconsistent figure execution. It is visually engaging, but less dependable at close inspection than the images ranked above it.
An ancient Roman bathhouse interior with accurate architectural details - marble columns, mosaic floors, arched ceilings, and steam rising from pools. Natural light from oculus openings. - Seedream 5.5
Seedream 5.5 9 / 10
Judge's noteThis is the strongest image in the set, combining architectural credibility with excellent material rendering and spatial organization. Its minor ornamental simplifications prevent a flawless score.
Complex Scenes A family cooking together in a kitchen, each person busy with a different task.
A family cooking together in a kitchen, each person busy with a different task. - Nano Banana 2
Nano Banana 2 9 / 10
Judge's noteRanks 2nd of 13 for its unusually convincing family interaction and successful organization of five activity areas. Only the toddler's slightly ambiguous cooking role and a few small contact details keep it behind the best image.
A family cooking together in a kitchen, each person busy with a different task. - Seedream 5.5
Seedream 5.5 6 / 10
Judge's noteThe image succeeds at naturalism and atmosphere but only partially distinguishes the participants' jobs. Its lower score reflects task differentiation and multi-focal clarity rather than any requirement for children or a particular family structure.
Ghibli style A mechanical creature in a polluted landscape. Capture the visual aesthetic of 'Nausicaä' by Studio Ghibli, with Miyazaki's mechanical designs and environmental contrast.
A mechanical creature in a polluted landscape. Capture the visual aesthetic of 'Nausicaä' by Studio Ghibli, with Miyazaki's mechanical designs and environmental contrast. - Nano Banana 2
Nano Banana 2 6 / 10
Judge's noteRanks 6th of 11. It is imaginative and thematically complete, but its comic-book styling and congested staging materially weaken fidelity to the requested visual language.
A mechanical creature in a polluted landscape. Capture the visual aesthetic of 'Nausicaä' by Studio Ghibli, with Miyazaki's mechanical designs and environmental contrast. - Seedream 5.5
Seedream 5.5 8 / 10
Judge's noteThis ranks fourth as a polished and accessible interpretation with convincing environmental contrast. It falls behind the fungal-landscape images because its setting and creature design are less specifically connected to the requested Nausicaä atmosphere.
Graphic Design Abstract background graphic, cyberpunk aesthetic, neon pink/blue light trails on dark grid, sense of digital speed, for desktop wallpaper.
Abstract background graphic, cyberpunk aesthetic, neon pink/blue light trails on dark grid, sense of digital speed, for desktop wallpaper. - Nano Banana 2
Nano Banana 2 9 / 10
Judge's noteRanked 1st of 13, this offers the strongest combination of abstraction, cyberpunk specificity, and expressive speed. Its sophisticated layering outweighs minor central crowding and the square format.
Abstract background graphic, cyberpunk aesthetic, neon pink/blue light trails on dark grid, sense of digital speed, for desktop wallpaper. - Seedream 5.5
Seedream 5.5 6 / 10
Judge's noteRanks 8th of 12: a competent science-fiction scene with a convincing sense of forward movement. Added hardware and less controlled effects reduce its effectiveness as the requested abstract wallpaper.
Hands & Anatomy A yoga practitioner in a complex pose, arms and legs fully extended (full-body view).
A yoga practitioner in a complex pose, arms and legs fully extended (full-body view). - Nano Banana 2
Nano Banana 2 9 / 10
Judge's noteRanked 1st of 12, this provides the strongest combination of exact prompt adherence, plausible anatomy, and compelling presentation. Small extremity-detail imperfections keep it below a flawless 10.
A yoga practitioner in a complex pose, arms and legs fully extended (full-body view). - Seedream 5.5
Seedream 5.5 3 / 10
Judge's noteRanked 11th of 12, this contains a critical extra-limb failure despite its attractive photographic treatment. The anatomical impossibility must outweigh the quality of the setting and lighting.
Photorealistic People & Portraits A black and white close-up portrait of a freckled woman with an intense gaze.
A black and white close-up portrait of a freckled woman with an intense gaze. - Nano Banana 2
Nano Banana 2 6 / 10
Judge's noteRanked 10th of 13, this is a credible portrait but an understated response to the requested intensity. Its broader framing and weaker facial emphasis matter more here than its otherwise sound anatomy.
A black and white close-up portrait of a freckled woman with an intense gaze. - Seedream 5.5
Seedream 5.5 10 / 10
Judge's noteThis ranks first for its combination of photographic credibility, precise execution, and complete prompt fulfillment. No conspicuous generation artifacts are visible at the supplied resolution, and the result reads as a finished professional portrait.
Surreal & Creative Prompts A snail whose shell contains a miniature city skyline, depicted in a hyperrealistic macro photography style with intricate architectural details and ambient lighting.
A snail whose shell contains a miniature city skyline, depicted in a hyperrealistic macro photography style with intricate architectural details and ambient lighting. - Nano Banana 2
Nano Banana 2 8 / 10
Judge's noteRanked 4th of 13, this offers excellent environmental storytelling and unusually complete urban infrastructure. Its polished model aesthetic is more noticeable than in the strongest photographic interpretations.
A snail whose shell contains a miniature city skyline, depicted in a hyperrealistic macro photography style with intricate architectural details and ambient lighting. - Seedream 5.5
Seedream 5.5 5 / 10
Judge's noteRanked twelfth, this is the least successful integration of the shell and miniature city. Competent natural textures prevent it from being a failed image, but the split-shell construction and simplistic architecture significantly weaken the result.
Text in Images A birthday cake with icing that spells "Happy Birthday Tim!" on top, food photography style.
A birthday cake with icing that spells "Happy Birthday Tim!" on top, food photography style. - Nano Banana 2
Nano Banana 2 10 / 10
Judge's noteRanked 1st of 13, this combines accurate icing text with the strongest atmosphere and photographic realism. Its detailed food styling and disciplined composition warrant the top score.
A birthday cake with icing that spells "Happy Birthday Tim!" on top, food photography style. - Seedream 5.5
Seedream 5.5 6 / 10
Judge's noteRanked 11th of 12 because correct wording is undermined by inconsistent sharpness and difficult lighting. Its atmosphere is interesting, but text presentation and photographic polish are noticeably weaker.
Ultra Hard Photorealistic close-up portrait of a person clearly performing the American Sign Language gesture for "thank you," hand positioned visibly in front of the chest, clear expression on face, neutral background
Photorealistic close-up portrait of a person clearly performing the American Sign Language gesture for "thank you," hand positioned visibly in front of the chest, clear expression on face, neutral background - Nano Banana 2
Nano Banana 2 6 / 10
Judge's noteExcellent photographic execution cannot fully compensate for an unclear sign and a less neutral setting. It ranks sixth, below the closer near-face interpretation but above the explicit hand-over-heart poses.
Photorealistic close-up portrait of a person clearly performing the American Sign Language gesture for "thank you," hand positioned visibly in front of the chest, clear expression on face, neutral background - Seedream 5.5
Seedream 5.5 9 / 10
Judge's noteRanked 1st of 12, this provides the strongest combination of photographic authenticity and credible sign positioning. The static pose does not explicitly show the outward movement, but it avoids the more consequential orientation and placement errors found elsewhere.

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