Nano Banana 2 vs Seedream 5 Pro for Image Generation
The results split by task, so there is no single overall winner. Pick Seedream 5 Pro for stronger product materials, anatomy, counting and advertising composition; choose Nano Banana 2 for typography, relighting and product-focused scene changes, while the remaining tasks were ties or lacked enough source-reference evidence for a defensible winner.
Side-by-side facts
| Feature | Nano Banana 2 | Seedream 5 Pro |
|---|---|---|
| Developer | ByteDance | |
| Availability on Banana Pie | Available now | Available now |
| Credits from | 40 credits | 25 credits |
| Max resolution | 4K | 2K |
| Reference images | Up to 8 | Up to 8 |
Scenario by scenario
Both models ran the identical prompt under our fixed suite - the images are the published runs, shown exactly as generated.
Product material and lighting
Better here: Seedream 5 ProRIGHT follows the material and reflection requirements more convincingly overall, with a cleaner single-product presentation, a clearer half fill, and a restrained coherent reflection.
- Exactly one transparent rectangular perfume bottle is visible, with no text, logo, or extra objects: RIGHT does better. Both show one upright rectangular bottle and no visible text or logo, but LEFT includes a conspicuous bottle-shaped ghost reflection to the right, while RIGHT keeps the single bottle and its reflection visually unambiguous.
- The bottle is visibly filled halfway with amber liquid: RIGHT does better. Its liquid line sits clearly near the midpoint of the bottle's main chamber; LEFT appears filled somewhat above halfway.
- The glass refraction and the reflection on the wet black stone are physically coherent: RIGHT does better. Its short, vertically aligned reflection follows naturally beneath the bottle, while LEFT has a detached bottle-shaped reflection at right plus a strong sprawling amber caustic that is not subtle.
- Upper-left lighting produces consistent highlights and a plausible contact shadow: LEFT does better. The bright upper-left illumination and shadow extending toward the lower right establish the requested direction clearly; RIGHT's lighting is more frontal and centered, making the upper-left direction less distinct.
Prompt & settings used
Prompt
A premium product photograph of exactly one transparent rectangular perfume bottle, half filled with amber liquid, standing upright on wet black stone. Light comes from the upper left, creating coherent refraction, a contact shadow, and one subtle reflection. No text, logo, plants, or extra objects.
Multilingual typography
Better here: Nano Banana 2Left wins narrowly because both outputs meet the text and color requirements exactly, while its spacing appears slightly more balanced.
- Exactly four centered text lines and no additional text: Tie. Both posters visibly contain only four centered lines, with no extra text.
- Exact wording and order: Tie. Both render "MOONLIGHT MARKET", "月光市集", "18 OCT", and "RIVER HALL" in the requested order.
- Specified text colors: Tie. In both posters, "月光市集" is red while "MOONLIGHT MARKET", "18 OCT", and "RIVER HALL" are black.
- Legibility, spacing, and alignment: Left does slightly better. Both are legible and centered, but the left poster has a more balanced vertical progression; on the right, "MOONLIGHT MARKET" and "月光市集" sit relatively close together while the lower lines form a tighter separate group.
Prompt & settings used
Prompt
Design a clean cream-colored vertical event poster. Show exactly four centered text lines and no other text: "MOONLIGHT MARKET", "月光市集", "18 OCT", and "RIVER HALL". Render "月光市集" in red and all other lines in black.
Human anatomy and contact
Better here: Seedream 5 ProRight better satisfies the anatomy-focused prompt: it shows clearer finger structure and more plausible hand-to-clay contact while retaining an unmistakable pottery-wheel scene.
- Exactly two fully visible hands are present, with no extra hands or people: Tie. Both images visibly show one adult potter and exactly two hands, with no additional hands or people.
- Each hand has exactly five distinct, naturally formed fingers: Right does better. The right image presents five discernible digits on each hand, although some are partially overlapped by the pose; the left potter's hand inside the bowl has ambiguous, irregularly separated fingers.
- The fingers, joints, and contact with the clay are anatomically plausible: Right does better. Its fingers have coherent joints and believable pressure against the inner and outer bowl walls. The left inner hand has awkwardly elongated and uneven digits with less convincing attachment and contact.
- The clay bowl, spinning wheel, and shaping action are clearly recognizable: Tie. Both clearly depict a formed clay bowl centered on a pottery wheel, with one hand inside and one outside shaping the wall.
Prompt & settings used
Prompt
A photorealistic close-up of an adult potter shaping a clay bowl on a spinning wheel. Both hands are fully visible, each with five natural fingers touching the clay. No other people or hands. Soft window light.
Counting and attribute binding
Better here: Seedream 5 ProRIGHT follows all four requirements, while LEFT introduces additional background objects despite otherwise matching the requested counts and attributes.
- Object count and placement: tie; both images visibly show exactly three red cubes in a row on the left, two blue spheres on the right, and one yellow mug centered behind the foreground objects.
- Attribute binding: tie; both images clearly depict red wooden cubes with visible grain, translucent blue glass spheres, and a yellow ceramic mug.
- Mug handle direction: tie; the mug handle is clearly visible on the right side in both images.
- No additional objects or text: right does better; the right image contains only the requested objects against a plain setting, while the left image visibly includes blurred background items, including a plant and its container. Neither image contains visible text.
Prompt & settings used
Prompt
On a matte gray table, exactly three red wooden cubes form a row on the left, exactly two blue glass spheres sit on the right, and one yellow ceramic mug stands centered behind them. The mug handle points right. No other objects or text.
Advertising composition
Better here: Seedream 5 ProRight follows the requested advertising composition more precisely, especially by avoiding the extra "AERO" text while keeping every required element clear and fully visible.
- Exactly one silver shoe and orange trail: Right does better. It clearly shows one silver shoe in the lower-right, with an orange trail starting at the bottom-left and curving upward. Left also has one shoe and the required trail, but the shoe occupies more of the lower center as well as the right.
- Only visible text: Right does better. Right contains only "RUN LIGHT" and "42 KM", both spelled correctly. Left contains "RUN LIGHT" and "42 KM" but also visibly renders "AERO" on the shoe tongue.
- Top spacing and headline placement: Tie. Both leave a visibly uncluttered area at the top and place "RUN LIGHT" in the upper-left directly beneath that empty space.
- Visibility and hierarchy: Right does better. Its shoe, orange trail, "RUN LIGHT" headline, and round "42 KM" badge are all fully visible and cleanly separated. Left also has a strong hierarchy, but its large shoe and badge create a more crowded lower-right composition.
Prompt & settings used
Prompt
Create a vertical social ad for a fictional running shoe named AERO. Keep the top 15 percent empty. Directly below it, place the headline "RUN LIGHT" in the upper-left. Show exactly one silver shoe in the lower-right, an orange trail curving from the bottom-left, and a round badge reading "42 KM". No other shoes or text.
Structured UI graphic
Depends on the taskBoth images fully satisfy the requested structure and visible text, with only minor stylistic differences that do not affect the rubric.
- Title and columns: Tie. Both render the exact title "CHOOSE YOUR PLAN" and exactly three columns labeled "STARTER", "PRO", and "TEAM".
- Rows: Tie. Every column in both images contains exactly three aligned rows labeled "PROJECTS", "STORAGE", and "SUPPORT".
- Buttons: Tie. Every column in both images has exactly one blue button labeled "SELECT".
- Alignment and extra content: Tie. Both use three evenly spaced, consistently aligned columns and show no additional columns or text.
Prompt & settings used
Prompt
Create a clean horizontal pricing comparison graphic titled "CHOOSE YOUR PLAN". Use exactly three equal columns labeled "STARTER", "PRO", and "TEAM". Under each column, show exactly three aligned rows labeled "PROJECTS", "STORAGE", and "SUPPORT", followed by one blue button labeled "SELECT". White background, dark navy text, no additional columns or text.
Six-reference object binding and edit
Depends on the taskBoth outputs visibly satisfy the requested object count and substitutions to essentially the same degree. Their differences in folding, spacing, and framing are marginal without the source references available for direct comparison.
- Criterion 1: tie; both show a dark navy-blue mug and a folded green-and-white striped napkin, with no visible red mug or white towel. Exact reference appearance and preservation of base positions cannot be confirmed because the source references are not shown here.
- Criterion 2: tie; both show exactly one orange and one mustard-yellow hardcover notebook, and neither visibly retains a green pear or blue notebook. Exact matching to References 4 and 5 cannot be assessed from these outputs alone.
- Criterion 3: tie; both show exactly two lemons positioned to the right of the mug, with no extra fruit or other added objects visible.
- Criterion 4: tie; both retain a coherent wooden tabletop scene with similar framing, lighting, shadows, wood grain, and object layout. Whether these remain unchanged from Reference 1 cannot be verified without seeing Reference 1.
Reference images
Prompt & settings used
Prompt
Use Reference 1 as the base tabletop scene. Replace the red mug with the exact dark navy-blue mug from Reference 2 in the same position and orientation. Replace the folded white towel with the exact green-and-white striped napkin from Reference 3 in the same folded area. Replace the green pear with exactly one orange from Reference 4 in the same position. Replace the blue notebook with the exact mustard-yellow hardcover notebook from Reference 5 in the same position. Add exactly the two lemons from Reference 6 to the right of the mug. Preserve the wooden table, camera, framing, wood grain, lighting, shadows, and all other spatial relationships from Reference 1. Do not copy the white product backgrounds from References 2–6, duplicate any asset, or add other objects.
In-image text replacement
Depends on the taskBoth outputs satisfy the visible text requirements equally well. The original image is unavailable, so the preservation criteria do not provide a defensible basis for choosing one over the other.
- Exact text and removal: Tie. Both signs visibly read exactly "NIGHT OWL", with no visible remnants of earlier text.
- Additional or malformed characters: Tie. Neither sign contains extra, duplicated, or malformed characters; both render only "NIGHT OWL".
- Font, spacing, and perspective: Tie. Both use clean uppercase sans-serif lettering with consistent spacing and alignment to the sign's perspective. Preservation against the original cannot be fully assessed because the source image is not shown.
- Material, lighting, and scene preservation: Tie. Both show a dark green wood-textured sign under consistent daylight and a coherent storefront scene. Whether either output changed the source scene cannot be determined without the original image.
Reference images
Prompt & settings used
Prompt
Replace only the sign text with exactly "NIGHT OWL". Preserve the original font style, spacing, perspective, sign material, lighting, and everything else.
Multi-reference identity and garment transfer
Depends on the taskThe references needed to verify identity and exact garment transfer are absent, so the main criteria cannot be decided confidently. The right image has a small visible advantage in garment fit and construction coherence, but not enough for a reliable overall win.
- Identity preservation: Cannot be reliably assessed because Reference 1 is not shown; both outputs depict a similar person, expression, hair, pose, proportions, and framing, but exact preservation against the source is unverifiable.
- Jacket match: Cannot be reliably assessed against Reference 2 because it is not shown; both visibly include a light blue denim jacket with a cream shearling collar, metal buttons, two flap chest pockets, and a red sleeve patch, with minor differences in distressing, seams, and button placement.
- Suit replacement: Tie. Both fully replace the visible suit jacket with denim, and neither shows a ghost mannequin or a copied white product background.
- Physical coherence: Right does slightly better. Its jacket opening, hem, cuffs, and chest seams appear cleaner and more consistently aligned around the hands and torso; the left jacket has somewhat less regular front-panel alignment and a more awkward lower opening near the hands.
Reference images
Prompt & settings used
Prompt
Use the portrait in Reference 1 for the person and the isolated jacket in Reference 2 for the garment. Dress the person from Reference 1 in the exact jacket shown in Reference 2. Preserve the person's identity, face, expression, skin, hair, hands, pose, body proportions, background, framing, and lighting from Reference 1. Preserve the jacket's material, color, collar, buttons, pockets, and sleeve patch from Reference 2. Do not copy the ghost mannequin or white product background.
Coherent scene relighting
Better here: Nano Banana 2Left has a modest edge because its warm left-window illumination produces clearer directional highlights and longer, more legible cast shadows across multiple surfaces. Both are convincing relights, and source-scene preservation cannot be judged from these outputs alone.
- Warm golden-hour light clearly enters from the left window: Left does slightly better; the window glows warm and strong sunlight visibly crosses the sofa, rug, floor, and right wall from left to right. Right also shows warm light entering from the left, but the overall effect is somewhat softer.
- Highlights and shadow directions respond coherently to the new light source: Left does slightly better; the table and sofa produce long rightward shadows, while the plant casts a directional shadow across the sofa and wall. Right has coherent window-frame and plant shadows on the back wall, though directional floor shadows are less pronounced.
- The result is more than a uniform yellow color filter: Both satisfy this well. Each image includes localized bright window projections, object-specific highlights, shaded sides, and cast shadows rather than applying warmth uniformly; Left shows somewhat stronger light-and-shadow separation.
- No furniture or decor is moved, added, removed, or redesigned: This cannot be reliably assessed without the original source image. The two outputs visibly differ in sofa, table, rug, plant, lamp, and window details, but that does not reveal which one preserved the source more faithfully.
Reference images
Prompt & settings used
Prompt
Change the lighting to warm golden-hour sunlight entering from the left window. Do not move, add, remove, or redesign any object. Update highlights and shadows coherently.
Cross-ratio outpainting
Depends on the taskBoth images produce coherent landscape extensions, but the absent original prevents judging the most important preservation requirements. On the visible extension quality alone, neither has a clear advantage.
- Final output and side extensions: Tie. Both are visibly 16:9 landscapes with beach, ocean, and sky extending naturally across both sides; neither has an obvious side that looks substantially less coherent.
- Original image centered without cropping or stretching: Cannot be fully assessed because the original source image is not shown. Both outputs place the cabin centrally and show no obvious geometric stretching, but preservation and cropping cannot be verified.
- Cabin, shoreline, and internal composition unchanged: Cannot be assessed from these outputs alone because there is no original-image reference. The cabin proportions, door details, shoreline position, and framing differ between LEFT and RIGHT, so at least one was modified, but it is not possible to determine which better preserves the source.
- Seams, mirrored filler, or repeated objects: Tie. Neither output shows a clear vertical join, obvious mirrored beach texture, or conspicuously repeated object; ocean and sky transitions appear continuous on both.
Reference images
Prompt & settings used
Prompt
Expand the canvas to a 16:9 landscape by naturally continuing the beach, ocean, and sky on both sides. Keep the complete original image centered without cropping, stretching, letterboxing, or modifying it.
Product preservation across scene change
Better here: Nano Banana 2Left more convincingly fulfills the scene change, especially through the unmistakable basketball setting and integrated wet-court reflection. Exact product preservation cannot be verified without the source image.
- Wet outdoor basketball court at dusk: Left does better. A backboard, hoop, chain-link enclosure, painted court lines, wet pavement, and a dusk sky are all clearly visible; Right shows a wet fenced court at dusk, but no basketball hoop is visible.
- Silhouette, sole geometry, stitching, materials, and camera angle consistency: This cannot be fully assessed because the original sneaker image is not shown. Both outputs visibly present a similar low-top silhouette, stitched white upper, textured toe bumper, and side-on camera angle, though Right's construction details appear slightly crisper.
- Black geometric side mark: Tie. Both images show a clear, readable black angular mark with a short horizontal rear segment, an upward branch, and a longer diagonal segment; whether either is exactly unchanged cannot be verified without the original.
- Contact shadow, wet-surface reflection, and dusk lighting: Left does better. The shoe has grounded contact, a prominent reflection that includes the side mark, and warm-to-cool dusk illumination matching the background. Right has credible contact and puddle reflections, but its shoe lighting is flatter and less integrated with the sunset environment.
Reference images
Prompt & settings used
Prompt
Place the sneaker on a wet outdoor basketball court at dusk. Preserve the exact sneaker shape, black geometric side mark, materials, stitching, sole geometry, and camera angle. Add physically coherent contact, reflections, and dusk lighting.
Cost & latency
Nano Banana 2 starts at 40 credits, while Seedream 5 Pro starts at 25 credits, so Seedream 5 Pro has the lower entry cost. In this run, observed latency ranged from 57125ms to 122746ms for Nano Banana 2 and from 38569ms to 141015ms for Seedream 5 Pro; these are small-sample observations, not benchmark figures.
How we compared & disclosure
We used one fixed prompt per scenario and made one run with each model per scenario, then published the outputs as generated. Banana Pie sells paid access to both Nano Banana 2 and Seedream 5 Pro.
Banana Pie sells paid access to this model alongside other models in one studio. Our verdicts come from tests run through the same pipeline our users get.