Ollie & Dot
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Img2 vs NBP

GPT-Image-2 vs Nano Banana Pro Comparison
Side-by-side comparison of OpenAI gpt-image-2 adaptations against proven NBP originals

Side-by-Side Comparisons

Three tests: proven NBP generations adapted for gpt-image-2 via the images.edit endpoint with identical reference images.

Comparison A: Down They Swam — Section 2B

NBP Original (temp 0.6)
Model: nano-banana-pro-preview
Temp: 0.6
API: Google AI Studio
Refs: 4 images
Scene anchor
Style
Ollie
Dot
The first reference image shows a PROVEN GOOD VERSION of this scene — match the COMPOSITION, CHARACTER PLACEMENT, SCALE, and LIGHTING from this image. The characters in this image are CORRECT — match their proportions, features, and placement exactly. Generate an ENHANCED VARIATION with the same quality and character accuracy but with fresh environmental details. The second reference image shows the 3D RENDERING STYLE — gold foil texture quality, underwater macro photography, depth-of-field. Render the scene in THIS photorealistic style. The third reference image shows OLLIE's exact character design — golden amber octopus with gold foil stipple texture. Match THIS character exactly. The fourth reference image shows DOT — small white pearlescent pearl with golden arc eyes. Match THIS character exactly. SCENE — DOWN THEY SWAM: A descending coral reef transitioning from warm shallow colors at top to cool deep blues at bottom. This is the moment of descent — characters swimming downward into the deep. A dramatic vertical composition showing the gradient from light to dark. CRITICAL STYLE: 3D PHOTOREALISTIC MACRO UNDERWATER PHOTOGRAPHY of tiny handcrafted figurines descending along a real coral reef wall. Water particles, caustics, depth-of-field blur. NOT 2D illustration, NOT watercolor, NOT painted. Physical 3D objects genuinely SUBMERGED in real ocean water. COLOR GRADIENT (TOP TO BOTTOM): - TOP: Warm golden sunlight, reds, yellows, greens — the sunny reef they're leaving - MIDDLE: Transition zone — oranges fading to teals and blues - BOTTOM: Deep blues, hints of bioluminescence beginning - Like a rainbow rock cliff edge falling downward CHARACTERS — DESCENDING TOGETHER: OLLIE — swimming downward, leading the descent: - Golden-AMBER skin (warm amber like honey, NOT solid metallic gold) - Gold foil STIPPLE texture — tiny metallic dots like hot-stamped gold leaf - Perfectly SPHERICAL smooth head — NO ears, NO bumps, NO hair - Big dark PILL-SHAPED pupils with GOLD iris rings - Brave/adventurous expression — looking down with curiosity - SEMI-TRANSLUCENT where natural light passes through — subtle, realistic. NOT a glow effect. - Eight short cute arms trailing upward as he swims down - CUTE BABY OCTOPUS CHARACTER — NOT a realistic octopus, NOT weird alien DO NOT make Ollie: a realistic octopus, solid metallic gold, static/stiff, with ears, with a backlight glow, with long spider legs, with tentacles with suckers DOT — floating alongside Ollie, slightly behind: - Bright pearlescent WHITE nacre with iridescent sheen - Eyes are golden-yellow UPSIDE-DOWN HALF-U shapes — warm glow from inside - NO mouth — ONLY the two glowing arc eyes - MARBLE-SIZED — much smaller than Ollie - Gentle glow providing soft light as they descend DO NOT make Dot: with a mouth, with circle/dot eyes, too large, with any hardware/antenna ENVIRONMENT: - Vertical reef wall with diverse coral (staghorn, brain coral, sea fans) - Clownfish in anemones on the upper warm section - Bioluminescent organisms beginning to appear in lower section - The reef is ALIVE — fish everywhere, movement, abundance - Sunlight shafts coming from upper LEFT - Real ocean water surface visible/suggested at very top UNDERWATER REALISM: Water caustic light patterns. Particle haze increasing with depth. Real bubbles with refraction. Depth-of-field blur. The scene should feel like genuine underwater photography. Full bleed 16:9 LANDSCAPE format. NO text or writing anywhere.
OpenAI Adaptation (Batch 12 Test A)
Model: gpt-image-2
API: images.edit endpoint
Quality: medium ($0.053/img)
Size: 1536x1024
Refs: Same 4 images via edit endpoint
Scene anchor
Style
Ollie
Dot
Image 1: shows a PROVEN GOOD VERSION of this scene — match the COMPOSITION, CHARACTER PLACEMENT, SCALE, and LIGHTING from this image. The characters in this image are CORRECT — match their proportions, features, and placement exactly. Generate an ENHANCED VARIATION with the same quality and character accuracy but with fresh environmental details. Image 2: shows the 3D RENDERING STYLE — gold foil texture quality, underwater macro photography, depth-of-field. Render the scene in THIS photorealistic style. Image 3: shows OLLIE's exact character design — golden amber octopus with gold foil stipple texture. Match THIS character exactly. Image 4: shows DOT — small white pearlescent pearl with golden arc eyes. Match THIS character exactly. SCENE — DOWN THEY SWAM: A descending coral reef transitioning from warm shallow colors at top to cool deep blues at bottom. This is the moment of descent — characters swimming downward into the deep. A dramatic vertical composition showing the gradient from light to dark. CRITICAL STYLE: 3D PHOTOREALISTIC MACRO UNDERWATER PHOTOGRAPHY of tiny handcrafted figurines descending along a real coral reef wall. Water particles, caustics, depth-of-field blur. NOT 2D illustration, NOT watercolor, NOT painted. Physical 3D objects genuinely SUBMERGED in real ocean water. COLOR GRADIENT (TOP TO BOTTOM): - TOP: Warm golden sunlight, reds, yellows, greens — the sunny reef they're leaving - MIDDLE: Transition zone — oranges fading to teals and blues - BOTTOM: Deep blues, hints of bioluminescence beginning - Like a rainbow rock cliff edge falling downward CHARACTERS — DESCENDING TOGETHER: OLLIE — swimming downward, leading the descent: - Golden-AMBER skin (warm amber like honey, NOT solid metallic gold) - Gold foil STIPPLE texture — tiny metallic dots like hot-stamped gold leaf - Perfectly SPHERICAL smooth head — NO ears, NO bumps, NO hair - Big dark PILL-SHAPED pupils with GOLD iris rings - Brave/adventurous expression — looking down with curiosity - SEMI-TRANSLUCENT where natural light passes through — subtle, realistic. NOT a glow effect. - Eight short cute arms trailing upward as he swims down - CUTE BABY OCTOPUS CHARACTER — NOT a realistic octopus, NOT weird alien DO NOT make Ollie: a realistic octopus, solid metallic gold, static/stiff, with ears, with a backlight glow, with long spider legs, with tentacles with suckers DOT — floating alongside Ollie, slightly behind: - Bright pearlescent WHITE nacre with iridescent sheen - Eyes are golden-yellow UPSIDE-DOWN HALF-U shapes — warm glow from inside - NO mouth — ONLY the two glowing arc eyes - MARBLE-SIZED — much smaller than Ollie - Gentle glow providing soft light as they descend DO NOT make Dot: with a mouth, with circle/dot eyes, too large, with any hardware/antenna ENVIRONMENT: - Vertical reef wall with diverse coral (staghorn, brain coral, sea fans) - Clownfish in anemones on the upper warm section - Bioluminescent organisms beginning to appear in lower section - The reef is ALIVE — fish everywhere, movement, abundance - Sunlight shafts coming from upper LEFT - Real ocean water surface visible/suggested at very top UNDERWATER REALISM: Water caustic light patterns. Particle haze increasing with depth. Real bubbles with refraction. Depth-of-field blur. The scene should feel like genuine underwater photography. Full bleed 3:2 LANDSCAPE format. No watermark. No text. Changes from NBP: "first/second/third/fourth reference image" → "Image 1/2/3/4:", "16:9 LANDSCAPE" → "3:2 LANDSCAPE", added "No watermark. No text."

Comparison B: Down They Swam — V3 Cliff Edge

NBP Original (temp 0.7)
Model: nano-banana-pro-preview
Temp: 0.7
API: Google AI Studio
Refs: 3 images (style + Ollie + Dot)
Style
Ollie
Dot
The first reference image shows the 3D RENDERING STYLE — gold foil texture quality, underwater macro photography, depth-of-field. Render the entire scene in THIS photorealistic style. The second reference image shows OLLIE's exact character design — golden amber octopus with gold foil stipple texture. Match this character's proportions and features. The third reference image shows DOT — small white pearlescent pearl with golden arc eyes. Match this character exactly. CRITICAL STYLE: 3D PHOTOREALISTIC MACRO UNDERWATER PHOTOGRAPHY of tiny handcrafted figurines in a real coral reef. Water particles, caustics, depth-of-field blur. NOT 2D illustration, NOT watercolor, NOT painted, NOT collage, NOT mixed media, NOT flat colors. Physical 3D objects photographed in real ocean water. SCALE: Characters TINY — few centimeters tall. Coral TOWERS over them. Fish BIGGER than them. Macro photography. SCENE — DOWN THEY SWAM: Dramatic descent along a reef cliff edge. COMPOSITION — SPLIT SCENE: - LEFT HALF: Beautiful reef cliff face — vibrant, detailed, alive with coral. A dramatic steep CLIFF EDGE running vertically. The reef grows ON TOP of this geological shelf. - RIGHT HALF: Opens into dark oceanic vastness — deep darkness with distant bioluminescent hints glowing far below. THE CLIFF EDGE — CRITICAL: A LITERAL geological shelf/cliff face dominating the left side. Visible stone rock face where the reef abruptly ends. Like an underwater cliff — reef on top, abyss below and to the right. Rainbow iridescent mineral shimmer on the cliff rock where light catches it. CORAL ON THE CLIFF (Left Side): - Brain coral, cauliflower coral (Pocillopora), sea fans, anemones - Small tropical fish tucked into crevices — clownfish, chromis - Colors bright and vivid at TOP: blues (#4A90D9), pinks (#F4B8C1), purples (#9B7ECF), warm corals - Colors shift COOLER moving DOWNWARD along the cliff - Greens (#7EC8A0) in the middle zone - Deepening blue (#3D7EA6) to Abyss Navy (#0D1B2A) at the bottom DEEP OCEAN (Right Side): - Dark watercolor-like darkness opening into vast space - Bioluminescent hints glowing far below — rainbow shimmer on the distant canyon floor - Tiny glowing creatures scattered in the deep darkness - Mystery, adventure, the unknown LIGHTING: Volumetric light shafts filtering from ABOVE LEFT. Caustic light patterns dancing on the reef. Abundant bubbles streaming UPWARD. Water particle haze. Surface not visible but light clearly comes from above. CHARACTERS: Ollie and Dot diving DOWNWARD together along the cliff edge — bodies angled down, following the steep reef wall into the deep. Arms trailing UPWARD behind them (opposite to swimming direction). Dynamic, purposeful descent. OLLIE — Match Ollie from the second reference image EXACTLY. - Golden-AMBER skin (warm amber like honey, NOT solid metallic gold) - Gold foil STIPPLE texture — tiny metallic dots like hot-stamped gold leaf, DENSE on arms and outer head, fading to clear on face center - Perfectly SPHERICAL smooth head — NO ears, NO bumps, NO hair - Big dark PILL-SHAPED pupils with GOLD iris rings - Very subtle pink blush on cheeks - EXACTLY EIGHT arms - TINY — a few centimeters tall - EXCITED, ANTICIPATING — small smile, squinty happy eyes, looking downward along the cliff into the deep DO NOT make Ollie: solid metallic gold, static/stiff, realistic adult octopus, with ears on head, too large in frame, with tentacle suckers visible, brown/dark colored, wide-open staring eyes, 2D illustrated looking, swimming upward, facing upward, in open water away from the cliff DOT — Match Dot from the third reference image EXACTLY. - Bright pearlescent WHITE nacre with iridescent sheen - Eyes are golden-yellow UPSIDE-DOWN HALF-U shapes — warm light glowing through nacre - NO mouth, NO nose, NO other facial features — ONLY the two glowing arc eyes - MARBLE-SIZED relative to Ollie — smaller than his head - Floating beside Ollie, oriented downward in direction of descent - Iridescent surface catches shifting light — warm tones above, cooler below DO NOT make Dot: with dot/circle eyes, with a mouth, dark colored, too large, separated from Ollie, 2D illustrated looking Full bleed 2:1 LANDSCAPE format (wide). Photographed handcrafted 3D artwork in real ocean water. NO text or writing anywhere.
OpenAI Adaptation (Batch 12 Test B)
Model: gpt-image-2
API: images.edit endpoint
Quality: medium ($0.053/img)
Size: 1536x1024
Refs: Same 3 images via edit endpoint
Style
Ollie
Dot
Image 1: shows the 3D RENDERING STYLE — gold foil texture quality, underwater macro photography, depth-of-field. Render the entire scene in THIS photorealistic style. Image 2: shows OLLIE's exact character design — golden amber octopus with gold foil stipple texture. Match this character's proportions and features. Image 3: shows DOT — small white pearlescent pearl with golden arc eyes. Match this character exactly. [Same prompt body as NBP version] Full bleed 3:2 LANDSCAPE format. No watermark. No text. Changes from NBP: "first/second/third reference image" → "Image 1/2/3:", "2:1 LANDSCAPE" → "3:2 LANDSCAPE", added "No watermark. No text."

Comparison C: Reef Edge — B15

NBP Original (temp 0.85)
Model: nano-banana-pro-preview
Temp: 0.85
API: Google AI Studio
Refs: 6 images (2 char + 4 scene favorites)
Ollie
Dot
Scene fav
Scene fav
Scene fav
Scene fav
Ref 1 = OLLIE's exact character design — golden-amber baby octopus, gold foil stipple texture, big dark pill-shaped eyes with warm golden catchlights (no stars), smooth round head with NO ears, NO bumps, NO holes. Match exactly. Ref 2 = DOT's exact character design — small pearlescent Tahitian pearl, golden glowing eyes, iridescent nacre sheen. Match exactly. Refs 3-6 = QUALITY and SCENE targets — match the rendering quality, underwater realism, lighting, composition, and character accuracy from these proven generations. SCENE: Coral reef drop-off. Massive reef fills LEFT THIRD — diverse natural marine life (red sea fans, orange staghorn, yellow sponges, green brain coral, purple corals, pink anemones, clownfish, butterflyfish). Reef naturally drops off — light-colored cliff with subtle rainbow light refractions from sunlight. MIDDLE and RIGHT is vast dark blue ocean fading to near-black. Open water dominates. CHARACTERS: Both TINY — 3-5% of frame. Ollie at the edge, back tentacles grip reef, front arms reach forward over the drop, fluid and free-flowing like a real octopus in water. Eyes OPEN but warmly squinted — not scrunched shut. Like a real baby octopus, Ollie is SEMI-TRANSLUCENT — sunlight illuminates through the back of his head and between his tentacles, creating a warm golden glow. Dot BEHIND Ollie on the reef, also looking down. Ollie: golden-AMBER (warm honey, NOT metallic gold), gold foil stipple, smooth head, NO ears/holes. Dot: pearlescent nacre, golden eyes, golf-ball sized relative to Ollie. BRIGHT GOLDEN SUNLIGHT from above, god rays, glassy water surface visible at top. Real underwater photography — bubbles, caustics, particles. Photographed handcrafted 3D artwork in real ocean water. Full bleed 16:9 landscape.
OpenAI Adaptation (Batch 12 Test C)
Model: gpt-image-2
API: images.edit endpoint
Quality: medium ($0.053/img)
Size: 1536x1024
Refs: Same 6 images via edit endpoint
Ollie
Dot
Scene fav
Scene fav
Scene fav
Scene fav
Image 1 = OLLIE's exact character design — golden-amber baby octopus, gold foil stipple texture, big dark pill-shaped eyes with warm golden catchlights (no stars), smooth round head with NO ears, NO bumps, NO holes. Match exactly. Image 2 = DOT's exact character design — small pearlescent Tahitian pearl, golden glowing eyes, iridescent nacre sheen. Match exactly. Images 3-6 = QUALITY and SCENE targets — match the rendering quality, underwater realism, lighting, composition, and character accuracy from these proven generations. [Same prompt body as NBP version] Photographed handcrafted 3D artwork in real ocean water. Full bleed 3:2 landscape. No watermark. No text. Changes from NBP: "Ref 1/2/Refs 3-6" → "Image 1/2/Images 3-6", "16:9 landscape" → "3:2 landscape", added "No watermark. No text."

Additional: Film Language Test (Batch 13)

Same prompt as Test C + 35mm film / Kodak color science language

Model: gpt-image-2
Added: "Shot on 35mm film stock. Kodak Ektachrome color science. Subtle film grain. Natural color reproduction with rich, saturated underwater tones."

Fixes Attempted

Summary of approaches tried to improve gpt-image-2 output quality.

Fix Batch Result
Updated skill (fixed sizes, quality tiers, ref image API) B11 Better prompt structure, characters still not matching NBP quality
Adapted proven NBP prompts + exact same refs B12 Much better compositions, characters closer but still texture issues
Added 35mm film + Kodak color science language B13 Slightly more natural textures, not dramatic improvement
Positive-only instructions relaxed B11+ Allows "no watermark, no text" — modest help
n=4 batch generation B11+ More consistent variants within a batch
Edit endpoint with labeled refs B12+ Strong composition anchoring from reference images