GPT Image 2 vs Nano Banana 2 for Image Generation
The results split by task, so there is no overall winner. Choose GPT Image 2 for stronger material rendering, attribute binding, advertising composition, and complex object edits; choose Nano Banana 2 for typography, human contact, garment transfer, relighting, and product scene changes. The models tied on structured UI graphics, text replacement, and outpainting.
Side-by-side facts
| Feature | GPT Image 2 | Nano Banana 2 |
|---|---|---|
| Developer | OpenAI | |
| Availability on Banana Pie | Available now | Available now |
| Credits from | 20 credits | 40 credits |
| Max resolution | 4K | 4K |
| 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: GPT Image 2LEFT more closely satisfies the material and lighting requirements. Its half fill, restrained reflection, refraction, and upper-left light direction are clearer and more physically coherent.
- Exactly one transparent rectangular perfume bottle is visible, with no text, logo, or extra objects: Tie. Both show one upright rectangular bottle and no visible text, logo, plants, or separate props; the bottle-like shape on the right side of RIGHT is visibly a reflection in the wet surface.
- The bottle is visibly filled halfway with amber liquid: LEFT does better. Its amber liquid reaches a clear, level midpoint in the bottle body, while RIGHT's fill level appears somewhat below the midpoint.
- The glass refraction and the reflection on the wet black stone are physically coherent: LEFT does better. Its glass edges and amber tones refract consistently, and the single reflection extends naturally beneath the bottle. RIGHT shows a detached bottle reflection to the right plus a strong projected amber pattern, making the surface optics less coherent and less subtle.
- Upper-left lighting produces consistent highlights and a plausible contact shadow: LEFT does better. The bright upper-left illumination, glass highlights, and shadow extending to the lower right agree clearly. RIGHT also has upper-left light and a rightward shadow, but the intense amber projection and separate-looking reflection make the lighting less consistent.
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 2RIGHT follows the requested four-line poster layout exactly, while LEFT incorrectly splits the first line into two.
- Exactly four centered text lines and no additional text: RIGHT does better. It shows exactly four centered lines, while LEFT renders "MOONLIGHT MARKET" across two lines as "MOONLIGHT" and "MARKET", producing five visible text lines.
- Exact text and order: RIGHT does better. Its lines read exactly "MOONLIGHT MARKET", "月光市集", "18 OCT", and "RIVER HALL" in the requested order. LEFT has the same wording and order, but the first required line is split into "MOONLIGHT" and "MARKET".
- Required colors: Tie. Both render "月光市集" in red and "MOONLIGHT MARKET", "18 OCT", and "RIVER HALL" in black.
- Legibility, spacing, and alignment: RIGHT does better. All four lines are clearly legible, centered on a consistent axis, and spaced cleanly. LEFT is legible and centered, but the oversized first phrase wraps and makes the overall spacing less even.
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: Nano Banana 2Right has the clearer and more plausible pottery-shaping action overall, despite ambiguity and distortion in its upper hand. Left makes the finger counts somewhat easier to read but has more noticeable fingertip and hand-shape artifacts.
- Exactly two fully visible hands: Tie. Both images visibly contain one potter and exactly two hands, with no additional people or hands; neither hand is cut off by the frame.
- Each hand has exactly five distinct, naturally formed fingers: Left does better. Five digits are more readily countable on both left-side hands, although several fingertips overlap; on the right, the upper hand's finger count is ambiguous because digits are partly merged or occluded, and one lateral finger appears unusually elongated.
- The fingers, joints, and contact with the clay are anatomically plausible: Right does slightly better. Its inner hand and outer supporting hand form a clearer, more credible shaping grip, while the left image has swollen-looking fingers and crowded, partly fused-looking fingertips. The right upper hand still has a visibly awkward lateral finger, so the advantage is limited.
- The clay bowl, spinning wheel, and shaping action are clearly recognizable: Right does better. The bowl and rotating wheel are clear in both, but the right image more distinctly shows one hand shaping inside while the other supports the outer 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: GPT Image 2LEFT follows the requested composition more completely. Both images handle the counts, attributes, and mug orientation correctly, but RIGHT violates the requirement that no additional objects be visible.
- Criterion 1: Tie. Both images visibly contain exactly three red cubes in a row on the left, exactly two blue spheres on the right, and one yellow mug centered behind the groups.
- Criterion 2: Tie. Both bind red to cubes, blue to transparent glass-like spheres, and yellow to a ceramic-looking mug. The RIGHT cubes show more obvious wood grain, while the LEFT objects still visibly match the requested categories and materials.
- Criterion 3: Tie. The mug handle is clearly attached on and extends toward the right in both images.
- Criterion 4: LEFT does better. LEFT shows only the requested objects and no text, while RIGHT visibly includes a potted plant and other room elements in the background. No text is visible in either image.
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: GPT Image 2Left follows the requested composition more closely, primarily through the clearer bottom-left trail origin and more definite empty top area. Both violate the no-other-text requirement by placing "AERO" on the shoe.
- Exactly one silver shoe and orange trail: Left does better. Both show one silver shoe in the lower-right, but Left's orange trail clearly enters from the bottom-left and curves into the scene; Right's trail crosses the lower portion from the right edge before curving toward the left.
- Only visible text: Tie. Both correctly render "RUN LIGHT" and "42 KM", but both also visibly render the prohibited extra text "AERO" on the shoe.
- Top spacing and headline placement: Left does better. Left leaves a clearly uncluttered area substantially taller than the requested top margin, with "RUN LIGHT" directly beneath it in the upper-left. Right also has empty sky above its headline, but the margin is closer to the threshold.
- Element visibility and hierarchy: Tie. Both keep the headline, badge, trail, and single shoe fully visible with a clear headline-to-product hierarchy; neither has a significant crop or overlap that obscures a required element.
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 satisfy all four rubric criteria. Their stylistic differences do not produce a meaningful rubric-based advantage.
- 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. Each column in both images has exactly one blue button labeled "SELECT".
- Alignment and additional content: Tie. Both show three evenly arranged columns and no additional rendered text. LEFT includes row icons, while RIGHT uses divider lines, but neither conflicts with this criterion.
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
Better here: GPT Image 2LEFT is the slight winner. Both outputs perform the requested substitutions, but LEFT handles the two added lemons more cleanly and keeps the full object arrangement visible.
- Criterion 1: Tie. Both show a dark navy-blue mug and a folded green-and-white striped napkin, with no red mug or white towel visible. Exact reference appearance and preservation of the original positions cannot be verified because the references are not shown.
- 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 reference matching cannot be assessed from these outputs alone.
- Criterion 3: Left does better. Both contain exactly two lemons to the right of the mug, but RIGHT gives one lemon a prominent green leaf similar to the orange's leaf, suggesting less clean object separation; LEFT's two lemons are distinct and have no duplicated accessory.
- Criterion 4: Left does better slightly. Both retain a coherent wooden tabletop, natural lighting, and plausible shadows, but LEFT keeps every object fully inside the frame while RIGHT crops the notebook at the right edge. Exact preservation of Reference 1's camera, grain, and spatial relationships 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 render the requested text cleanly and without visible character errors. The source image is unavailable, so the preservation criteria do not support choosing one over the other.
- Exact text and removal: Tie. Both signs visibly read exactly "NIGHT OWL", and no old text is visible.
- Additional or malformed characters: Tie. Both signs contain only the letters in "NIGHT OWL", with no visible extra or malformed characters.
- Font, spacing, and perspective preservation: Tie. Both render clean uppercase sans-serif lettering with consistent spacing and perspective, but preservation of the original cannot be verified because the source image is not shown.
- Material, lighting, and scene preservation: Tie. Both show coherent painted-wood signs and natural lighting, but whether either preserved the original sign and surrounding scene unchanged cannot be assessed without the source 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
Better here: Nano Banana 2Right is the stronger output overall because its jacket contains more distinctive, product-like details while maintaining a coherent fit and natural portrait appearance. Exact reference preservation remains uncertain because the references are not visible.
- Identity preservation: The reference portrait is not shown, so exact identity, expression, hair, pose, body proportions, and framing preservation cannot be verified. Between the outputs, right retains a more natural photographic appearance, while left shows subtle changes in facial proportions and a tighter crop.
- Jacket match: The isolated jacket reference is not shown, so an exact match cannot be confirmed. Right shows more specific garment detail, including distressed denim marks, a cream shearling collar, bronze buttons, flap pockets, and a red sleeve patch; left has cleaner denim, different pocket construction, and a larger patch.
- Black suit replacement: Tie. Both visibly replace the original black suit jacket with a denim shearling-collar jacket, and neither includes a ghost mannequin or white product background.
- Physical coherence: Right does slightly better. Its jacket sits naturally around the shoulders and torso with plausible sleeve folds and scene-consistent lighting. Both render the overlapping hands reasonably, though some finger contours are slightly soft.
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 2Right produces the clearer and more spatially coherent golden-hour relighting, with stronger directional highlights and shadows from the left window.
- Warm golden-hour light clearly enters from the left window: right does better; strong warm sunlight visibly projects from the left across the sofa, rug, floor, and right wall, while left is also warm but the direction is somewhat less pronounced.
- Highlights and shadow directions respond coherently to the new light source: right does better; the coffee table and sofa cast long shadows toward the right, and window-shaped illumination continues consistently across the room. Left has plausible plant and lamp shadows, but weaker directional modeling on the floor and furniture.
- The result is more than a uniform yellow color filter: right does better; it retains distinct shaded areas and creates localized bright bands, sharp cast shadows, and varied illumination. Left also includes localized lighting, but much of the room has a more uniformly amber cast.
- No furniture or decor is moved, added, removed, or redesigned: this cannot be reliably assessed without the original source image. The two outputs differ in framing and object placement, but that does not reveal which one, if either, preserved the source accurately.
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 outputs present convincing, centered beach outpainting with no clear extension artifacts. The decisive preservation criteria cannot be verified without the original image, and the visible extension quality is too similar to justify a winner.
- 16:9 output and natural side content: Tie. Both images are visibly wide landscape compositions with beach, ocean, and sky continuing naturally to both sides.
- Complete original centered without cropping or stretching: Tie. Both place the complete cabin near the horizontal center with no obvious geometric stretching, but preservation of the full original frame cannot be confirmed because the source image is not shown.
- Original cabin, shoreline, and internal composition unchanged: Cannot be assessed for either side without the original image. The cabin and shoreline visibly differ between LEFT and RIGHT, but that does not establish which, if either, changed the source.
- No visible seams, mirrored filler, or repeated objects: Tie. Neither image shows a clear vertical join, obvious mirrored region, or conspicuously duplicated beach or wave object; both extensions blend consistently with their central scene.
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 2Right more convincingly establishes the requested wet dusk court and provides more coherent environmental lighting and surface interaction. Exact product preservation cannot be verified without the source image.
- Wet outdoor basketball court at dusk: Right does better. Both show wet courts, hoops, fencing, and dusk skies, but Right includes clearer painted court lines and more naturally integrates the shoe into the broader court scene; Left's oversized foreground shoe obscures much of the playing surface.
- Sneaker consistency: This cannot be fully assessed because the original sneaker image is not shown. Both outputs visibly retain a similar low-top silhouette, white stitched upper, textured toe bumper, and side camera angle, though Left renders finer stitching and material texture more clearly.
- Black geometric side mark: Whether the mark remains unchanged cannot be assessed without the original. Both marks are readable, but they visibly differ in proportions: Left has thicker, broader branches, while Right has a narrower horizontal segment and slimmer diagonal branches.
- Contact shadow, reflection, and dusk lighting: Right does better. Its warm sky light carries consistently across the shoe and wet ground, with a clear reflection and grounded contact shadow. Left has a strong reflection and shadow, but the shoe is lit much more brightly and neutrally than its dim surroundings, making the integration feel less natural.
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
GPT Image 2 starts at 20 credits, while Nano Banana 2 starts at 40 credits, so GPT Image 2 is the lower-credit option per generation. In this run's small latency sample, GPT Image 2 ranged from 81370 ms to 189546 ms, while Nano Banana 2 ranged from 57125 ms to 122746 ms; these observations are specific to this run, not benchmark figures.
How we compared & disclosure
We used one fixed prompt per scenario and ran it once with each model, then published the outputs as generated. Banana Pie sells paid access to both GPT Image 2 and Nano Banana 2.
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.