13 illustration styles, revisited: GPT Image 2 vs. Nano Banana 2
26 images, 13 styles, one shared scene: a side-by-side comparison of GPT Image 2 and Nano Banana 2, with notes on style, detail, and composition.
The images and prose were produced with AI tools. The notes describe the specific outputs shown. The hero is GPT Image 2’s paper-cut result, also included below.
A red bicycle courier crosses a stone bridge at sunrise, with a river below and a city behind. This comparison keeps the scene and 11 treatments from my original illustration style post, then adds cyanotype and embroidery: 13 styles, 26 images, two models.
The bridge has broad surfaces, the bicycle has fine structure, and the water has reflections. Each treatment has to decide what to do with all three. Does the requested material shape the scene, or become decoration over it?
Two models, one set of prompts
The pair is GPT Image 2 and Nano Banana 2, Google’s Gemini 3.1 Flash Image. Nano Banana 2 is distinct from the Pro model in the original post.
How I ran the comparison
I generated the first 11 pairs on September 6, 2026, and the cyanotype and embroidery pairs on September 7. All used Vercel AI Gateway, selecting openai/gpt-image-2 and google/gemini-3.1-flash-image.
Each model received the same base prompt plus one style block. The first 11 blocks are unchanged; the final two are new. I kept the first successful output, with no aesthetic rerolls, reference images, edits, or search tools.
GPT Image 2 used 1024 × 1024 at high quality; Nano Banana 2 used 1K at 1:1. These are practical output settings, not equal compute budgets or a cost benchmark. OpenAI controls, Gemini controls.
“Red bicycle courier” leaves open whether the bicycle, clothing, or both should be red. Some palettes conflict with that color. Those interpretations belong in the observations. One output per style shows a result worth examining, not how reliably a model repeats it.
Base prompt
Draw a red bicycle courier crossing a stone bridge over a calm river at sunrise,
small city skyline in the background, trees on both sides, soft morning mist,
centered composition, full scene, no text or logos.Append one treatment to the base prompt. In each pair, GPT Image 2 appears first and Nano Banana 2 second. Select an image to see it at full size.
1) Flat Vector Editorial
Nano Banana 2 gives the trees distinct geometric silhouettes and keeps large areas of the sky cream. GPT Image 2 fills the banks with smaller leaves, rocks, and layered shading. Both produce an inviting sunrise, but Nano Banana’s output is closer to the simplified shapes in the style block.
They also interpret the courier differently: GPT uses a conventional bicycle; Nano Banana adds a front cargo box. That is a scene choice, separate from the question of which image feels more convincingly flat.
Prompt adjustment:
Style treatment: flat vector editorial illustration, clean geometric shapes,
crisp edges, minimal shading, limited palette of teal coral cream,
subtle grain texture.
2) Isometric Illustration
The bridge runs diagonally through both images, but the treatment differs sharply. GPT Image 2 produces a detailed aerial scene with textured stone, leafy trees, and atmospheric distance. Nano Banana 2 uses clean parallel bridge edges, outlined tree shapes, and a small cluster of geometric buildings.
For this technical illustration brief, I would start with Nano Banana’s version. GPT’s is appealing as an environment rendering, but looking down at a bridge is not by itself the same as adopting an isometric drawing language.
Prompt adjustment:
Style treatment: isometric technical illustration, axonometric perspective,
precise geometry, long soft shadows, muted cyan and warm orange palette.
3) Ink Line Art
GPT Image 2 commits to monochrome. Dense marks build the trees and riverbanks around a single broad bridge arch, while the distant city fades into the paper. Nano Banana 2 draws a lighter three-arch bridge and presents the illustration as a sheet casting a small shadow.
Nano Banana also retains red on the backpack and bicycle. The base scene includes “red”; the style asks for black and white. Here the models visibly resolve that conflict differently, and I prefer GPT’s choice for a strictly monochrome brief.
Prompt adjustment:
Style treatment: black and white ink line art, varied line weight,
cross-hatching for shadows, hand-drawn texture on off-white paper.
4) Watercolor
GPT Image 2 lets the washes fill the frame, with a bright warm orange reflection and darker, granular banks. The courier is small against that landscape. Nano Banana 2 leaves an irregular white margin, outlines more of the stonework, and makes the rider larger.
Both show paper texture and softened pigment edges. The distinction I notice is between a landscape painting that contains a courier and an illustration organized around that courier. For a small editorial image, Nano Banana’s larger subject is easier to pick out.
Prompt adjustment:
Style treatment: watercolor illustration on cold-press paper,
transparent washes, soft edges, pigment blooms, light granulation.
5) Storybook Gouache
Both models move toward warmer, more opaque-looking paint than in the watercolor pair. GPT Image 2 uses a saturated yellow sky, dense foliage, and a broad arch reflected in the river. Nano Banana 2 gives the courier more space and uses larger, easier-to-read painted shapes in the water and clouds.
I prefer GPT’s atmosphere as a landscape and Nano Banana’s clearer character emphasis for a storybook page. Those are choices about the intended use; neither preference proves that one model reproduces gouache more faithfully in general.
Prompt adjustment:
Style treatment: storybook gouache painting, matte opaque brush strokes,
rich warm palette, layered painted texture.
6) Paper-Cut Collage
This is one of the clearest material comparisons. GPT Image 2 gives the clouds, leaves, and foreground reeds thick-looking edges and pronounced shadows. Its paper grain is visible across the scene. Nano Banana 2 uses smoother layers, a lighter palette, and a winding river assembled from pale shapes.
Both read as paper constructions. GPT’s version feels more tactile to me; Nano Banana’s feels cleaner and more graphic. The bicycle remains finely detailed in both, which creates a contrast with the broad cut-paper forms around it.
Prompt adjustment:
Style treatment: paper-cut collage illustration, layered cut-paper shapes,
tactile paper fibers, soft depth shadows between layers.
7) Risograph Print
GPT Image 2 pushes the pink and teal much harder: the sky is pink, the banks are teal, and coarse speckling covers the printed surface. Nano Banana 2 is more restrained in its color, with a finely screened landscape and conspicuous pink-and-teal offsets around the rider and rectangular image border.
Both retain substantial scenery detail. For a bold two-color poster, I would choose GPT’s output from this pair. Nano Banana’s version interests me more as an image of a worn printed photograph.
Prompt adjustment:
Style treatment: risograph print aesthetic, two-color spot inks
(fluorescent pink and teal), halftone dots, slight misregistration,
vintage poster feel.
8) Clay 3D / Claymation Look
Both outputs convincingly turn the rider, bridge, and trees into a miniature scene. GPT Image 2 gives the stones and foliage rougher surfaces, with a softly blurred city behind them. Nano Banana 2 builds more regular cobbles and trees covered in small, repeated leaf shapes.
The water stays glossy and reflective in both. That keeps the sunrise legible while contrasting with the modeled surfaces around it. This pair feels closer in overall interpretation than the flat-vector or isometric examples; the differences are mostly in surface texture and construction.
Prompt adjustment:
Style treatment: 3D claymation miniature style, rounded handcrafted forms,
soft studio lighting, tactile clay texture, shallow depth of field.
9) Synthetic Cubism
GPT Image 2 spreads colored planes across the sky, bridge, water, and trees, with painted texture connecting the pieces. Nano Banana 2 gives those planes dark outlines and a strong rectangular border, producing something closer to a stained-glass or mosaic effect. Its larger courier is broken into angular shapes too.
Both keep a recognizable, conventionally arranged bridge scene. I would describe these as geometric interpretations of the prompt rather than use either image as a definitive example of Synthetic Cubism. GPT’s continuous color planes are my preference here.
Prompt adjustment:
Style treatment: bright colored Synthetic Cubism illustration, angular fractured planes,
overlapping geometric forms, bold contrasting color blocks, subtle painted texture.
10) Linocut Print
GPT Image 2 interprets “two-tone” as rusty red against cream paper. Fine scraped-looking marks describe the water, foliage, and stone. Nano Banana 2 adds heavy black shapes alongside the red, carving the leaves and reflections into a much stronger contrast.
The difference changes how the bridge reads: GPT’s arch sits within a broad printed landscape; Nano Banana’s dark foreground makes the structure feel heavier and the rider more prominent. I would choose Nano Banana’s version for a forceful print treatment, and GPT’s for the quieter single-ink effect.
Prompt adjustment:
Style treatment: linocut print illustration, carved line textures, high contrast two-tone ink,
rough hand-carved edges, handmade press texture.
11) Art Nouveau Poster Illustration
GPT Image 2 wraps the landscape in long gold curves, red flowers, and an oval opening. Nano Banana 2 uses a denser rectangular botanical border and carries the ornament onto the bridge itself. Both leave out lettering, as requested.
The distinction is where the decoration lives. GPT’s sweeping border frames a relatively naturalistic landscape; Nano Banana’s outlines and repeated motifs extend further into the scene. I prefer Nano Banana’s more integrated ornament here, though GPT’s broad curves give it a strong poster silhouette.
Prompt adjustment:
Style treatment: Art Nouveau poster illustration, flowing organic lines, ornamental botanical motifs,
flat decorative color fields, vintage print texture, elegant composition, no typography.
12) Cyanotype-Inspired Illustration
Cyanotype is a photographic printing process; these images imitate its appearance. Kew’s process guide shows the characteristic Prussian blue and white.
Both outputs use blue tones and brushed borders, but neither makes the courier a pale negative silhouette. GPT Image 2 builds a clouded sky and detailed banks around one broad arch. Nano Banana 2 uses three arches, a larger rider, and a visible sun. I prefer GPT’s atmospheric print effect; Nano Banana’s simpler silhouette reads faster.
Prompt adjustment:
Style treatment: cyanotype-inspired illustration, deep Prussian blue and paper white,
delicate negative silhouettes, soft exposure edges, brushed emulsion border,
textured cotton paper, strictly monochrome.
13) Embroidered Textile Illustration
GPT Image 2 uses fine stitch-like marks to hold a soft mist, distant skyline, and glowing reflection together. Nano Banana 2 makes the construction more obvious: long diagonal threads cross the sky, horizontal stitches fill the water, and chunky leaves rise from the linen.
Both keep the red courier. Nano Banana’s larger rider and outlined bridge feel closer to a stitched illustration; GPT’s dense detail approaches a landscape reproduced in thread. For a brief where the embroidery must remain visible at small sizes, I would choose Nano Banana’s result.
Prompt adjustment:
Style treatment: hand-embroidered textile illustration on natural linen,
satin-stitch color fields, fine backstitch outlines, directional thread shading,
visible woven ground, subtle raised fibers, entire scene rendered in stitches.
What I would take into the next image
In these outputs, Nano Banana 2 is my starting point for flat or technical illustration. Its geometric trees and cleaner isometric bridge respond more directly to those style blocks. GPT Image 2 gives me the paper texture I prefer and resolves the ink prompt’s color conflict in favor of monochrome.
The embroidery pair adds another distinction: fine detail can soften the very stitches that make the material recognizable. Framing matters too. Nano Banana’s courier is larger in the watercolor, gouache, and cubism pairs, which helps at small display sizes. GPT often gives more space to the landscape. Neither choice is automatically better; a storybook page and a landscape print ask different things of the same scene.
For your next project, pick two or three treatments and run them with the subject you actually need. Inspect the image where it will be used: the thumbnail, the page, the poster. A beautiful river reflection is little help if the courier disappears at that size.