Model Comparison

Flux 1.1 Pro Ultra vs Nano Banana Pro

Two premium models at different price points: Pro Ultra delivers native 4MP resolution with documentary authenticity at a moderate cost, while Nano Banana Pro offers Gemini 3 Pro's flagship quality with superior text rendering at roughly 2.5× the price. Choose between resolution control and absolute quality ceiling.

Comparison6 min read
Background

Native Resolution vs Flagship Intelligence

Flux 1.1 Pro Ultra represents Black Forest Labs' highest-resolution offering in the FLUX lineup. Its native 4-megapixel output (approximately 2048x2048 pixels) generates without upscaling, making it well-suited for large-format printing, detailed photography, and situations requiring significant cropping. The model's "raw" mode produces images with authentic photographic qualities—natural grain, realistic color casts, and the subtle imperfections that distinguish genuine photographs from digital renders.

Nano Banana Pro is Google's Gemini 3 Pro image model accessed through Fal.ai's infrastructure. With an ELO rating of approximately 1222, it ranks among the highest-quality image generation models available. The model excels at semantic understanding—interpreting complex prompts with sophisticated scene composition—and delivers exceptional text rendering with a 9/10 score. At roughly 2.5× Pro Ultra's cost, it sits at the premium tier but offers quality that justifies the investment for demanding applications.

The core trade-off is resolution control versus overall quality ceiling. Pro Ultra's 4MP output provides genuine advantages for print and cropping workflows at a more accessible price point. Nano Banana Pro costs roughly 2.5× more but brings Google's latest multimodal intelligence to bear, resulting in superior prompt interpretation, text accuracy, and overall coherence. For most digital applications where quality trumps resolution, Nano Banana Pro's capabilities may justify its premium.

Both models take approximately 8 seconds to generate, so speed isn't a differentiator. Where they diverge is in their approach: Pro Ultra offers photographer-level control with raw mode and high resolution, while Nano Banana Pro emphasizes intelligent scene understanding and maximum quality at standard resolutions. Your choice depends on whether your workflow prioritizes print-ready pixels or the highest possible generation quality.

Tip: For digital-first workflows where maximum quality matters more than resolution, Nano Banana Pro's superior prompt interpretation and text rendering often justify its premium pricing. For print production, editorial photography, or heavy cropping needs, Pro Ultra's 4MP output and raw mode provide better value at less than half the cost.

Side by Side

Visual Comparison

Compare outputs from both models using identical prompts. Notice differences in detail rendering, color treatment, and prompt interpretation.

PromptFlux 1.1 Pro UltraNano Banana Pro
PortraitElderly master calligrapher at work, brush poised over rice paper, ink stones and brushes arranged nearby, traditional studio with natural light through shoji screens, documentary portrait
Flux 1.1 Pro Ultra - Portrait
Model: flux-1.1-pro-ultra
Elderly master calligrapher at work, brush poised over rice paper, ink stones and brushes arranged nearby, traditional studio with natural light through shoji screens, documentary portrait
Nano Banana Pro - Portrait
Model: nano-banana-pro
Elderly master calligrapher at work, brush poised over rice paper, ink stones and brushes arranged nearby, traditional studio with natural light through shoji screens, documentary portrait
Still LifeArrangement of antique brass scientific instruments on mahogany desk, astrolabe and compass catching window light, vintage maps rolled in background, museum collection photography
Flux 1.1 Pro Ultra - Still Life
Model: flux-1.1-pro-ultra
Arrangement of antique brass scientific instruments on mahogany desk, astrolabe and compass catching window light, vintage maps rolled in background, museum collection photography
Nano Banana Pro - Still Life
Model: nano-banana-pro
Arrangement of antique brass scientific instruments on mahogany desk, astrolabe and compass catching window light, vintage maps rolled in background, museum collection photography
ArchitectureInterior of century-old library, towering bookshelves with rolling ladders, reading tables with green banker's lamps, dust motes floating in afternoon light shafts, architectural photography
Flux 1.1 Pro Ultra - Architecture
Model: flux-1.1-pro-ultra
Interior of century-old library, towering bookshelves with rolling ladders, reading tables with green banker's lamps, dust motes floating in afternoon light shafts, architectural photography
Nano Banana Pro - Architecture
Model: nano-banana-pro
Interior of century-old library, towering bookshelves with rolling ladders, reading tables with green banker's lamps, dust motes floating in afternoon light shafts, architectural photography
NatureClose-up of monarch butterfly on purple coneflower, morning dew on petals, shallow depth of field blurring wildflower meadow behind, macro nature photography
Flux 1.1 Pro Ultra - Nature
Model: flux-1.1-pro-ultra
Close-up of monarch butterfly on purple coneflower, morning dew on petals, shallow depth of field blurring wildflower meadow behind, macro nature photography
Nano Banana Pro - Nature
Model: nano-banana-pro
Close-up of monarch butterfly on purple coneflower, morning dew on petals, shallow depth of field blurring wildflower meadow behind, macro nature photography
FoodRustic Italian antipasto spread on weathered wooden board, prosciutto, aged parmesan, olives, and crusty bread, wine bottle and glasses soft in background, editorial food photography
Flux 1.1 Pro Ultra - Food
Model: flux-1.1-pro-ultra
Rustic Italian antipasto spread on weathered wooden board, prosciutto, aged parmesan, olives, and crusty bread, wine bottle and glasses soft in background, editorial food photography
Nano Banana Pro - Food
Model: nano-banana-pro
Rustic Italian antipasto spread on weathered wooden board, prosciutto, aged parmesan, olives, and crusty bread, wine bottle and glasses soft in background, editorial food photography

New to ImageGPT?

ImageGPT provides access to both Flux 1.1 Pro Ultra and Nano Banana Pro through a single API. Choose print-ready resolution for editorial work, flagship quality for demanding creative projects—all without managing multiple providers. Start with a 7-day free trial.

Recommendations

When to Use Each Model

Choose based on whether your project demands maximum resolution or maximum quality.

Flux 1.1 Pro Ultra

  • Large format prints and wall art
  • Documentary and editorial photography
  • Images requiring significant cropping
  • Budget-conscious premium production
  • Raw photographic aesthetic needs

Nano Banana Pro

  • Maximum quality digital content
  • Complex scene compositions
  • Text-heavy designs and signage
  • Creative work requiring sophisticated prompts
  • When quality ceiling matters most
Deep Dive

Portrait Quality and Skin Rendering

Testing how each model handles human subjects and subtle skin textures.

Flux 1.1 Pro Ultra
"Portrait of elderly jazz musician in smoky club, saxophone r..."
Flux 1.1 Pro Ultra result
Model: flux-1.1-pro-ultra
Portrait of elderly jazz musician in smoky club, saxophone resting on lap, weathered hands and expressive face lit by warm stage light, intimate documentary photography style
Nano Banana Pro
"Portrait of elderly jazz musician in smoky club, saxophone r..."
Nano Banana Pro result
Model: nano-banana-pro
Portrait of elderly jazz musician in smoky club, saxophone resting on lap, weathered hands and expressive face lit by warm stage light, intimate documentary photography style

Portrait photography reveals subtle differences in how these models approach human subjects. Pro Ultra's raw mode delivers documentary authenticity—natural skin texture with actual character, realistic lighting gradients, and the specific quality of available light that seasoned photographers recognize. The results feel like archival photography rather than digital renders, which suits editorial and documentary applications well.

Nano Banana Pro produces portraits with exceptional coherence—facial features maintain anatomical accuracy, skin renders with fine detail, and the overall composition tends toward professional polish. The model's superior prompt interpretation shows in how it handles descriptive elements like "smoky" or "intimate," translating atmospheric cues into visual elements more reliably. For creative portraits where mood and concept matter as much as technical accuracy, Nano Banana Pro's intelligence shows.

Deep Dive

Text Rendering and Typography

Comparing accuracy and legibility when text appears in scenes.

Flux 1.1 Pro Ultra
"Vintage neon sign reading 'JAZZ CLUB' glowing in rainy night..."
Flux 1.1 Pro Ultra result
Model: flux-1.1-pro-ultra
Vintage neon sign reading 'JAZZ CLUB' glowing in rainy night, reflections on wet pavement, art deco building facade, urban nightlife photography with dramatic lighting
Nano Banana Pro
"Vintage neon sign reading 'JAZZ CLUB' glowing in rainy night..."
Nano Banana Pro result
Model: nano-banana-pro
Vintage neon sign reading 'JAZZ CLUB' glowing in rainy night, reflections on wet pavement, art deco building facade, urban nightlife photography with dramatic lighting

Text rendering represents one of the clearer differentiators between these models. Nano Banana Pro's 9/10 text score reflects Google's multimodal training—the model understands typography as semantic content, not just visual patterns. Neon signs, storefront lettering, and atmospheric text tend to render legibly with correct character formation. This matters significantly for any project where text needs to actually read.

Pro Ultra approaches text as a visual element within the photographic frame. Results can be atmospheric and aesthetically appropriate without necessarily being legible. The 7/10 score means basic text often works, but complex phrases or detailed typography may be stylized or partially formed. For signage meant to be read, Nano Banana Pro is more reliable; for atmospheric background text where mood matters more than accuracy, Pro Ultra's approach can work.

Tip: If your project requires legible text in the image—signage, labels, titles—Nano Banana Pro's superior text rendering often justifies its premium. For atmospheric or background text where accuracy is secondary to visual impact, Pro Ultra's approach may suffice.

Deep Dive

Complex Scene Composition

Testing prompt interpretation and spatial reasoning in multi-element scenes.

Flux 1.1 Pro Ultra
"Bustling Moroccan spice market, pyramids of colorful spices ..."
Flux 1.1 Pro Ultra result
Model: flux-1.1-pro-ultra
Bustling Moroccan spice market, pyramids of colorful spices in brass dishes, merchant arranging saffron in afternoon light, fabric awnings filtering sun into color patches, travel photography
Nano Banana Pro
"Bustling Moroccan spice market, pyramids of colorful spices ..."
Nano Banana Pro result
Model: nano-banana-pro
Bustling Moroccan spice market, pyramids of colorful spices in brass dishes, merchant arranging saffron in afternoon light, fabric awnings filtering sun into color patches, travel photography

Complex scenes with multiple elements test prompt interpretation and spatial reasoning. Nano Banana Pro's multimodal intelligence shows advantages here—the model maintains coherent relationships between elements, handles depth and layering naturally, and translates atmospheric descriptions into visual treatments reliably. Busy market scenes, multi-subject compositions, and prompts with specific spatial relationships tend to resolve more accurately.

Pro Ultra approaches complex scenes through photographic logic, producing images that feel captured rather than composed. The raw mode adds authentic imperfections—slight focus variations, natural color casts—that enhance documentary feel. For travel and street photography where authentic atmosphere matters, Pro Ultra's approach works well. For precisely composed commercial scenes, Nano Banana Pro's control may be preferable.

Deep Dive

Detail and Material Rendering

Examining how each model handles fine textures and material qualities.

Flux 1.1 Pro Ultra
"Macro shot of handcrafted silver jewelry on velvet display, ..."
Flux 1.1 Pro Ultra result
Model: flux-1.1-pro-ultra
Macro shot of handcrafted silver jewelry on velvet display, intricate filigree work catching studio light, subtle patina on aged metal, product photography with shallow depth of field
Nano Banana Pro
"Macro shot of handcrafted silver jewelry on velvet display, ..."
Nano Banana Pro result
Model: nano-banana-pro
Macro shot of handcrafted silver jewelry on velvet display, intricate filigree work catching studio light, subtle patina on aged metal, product photography with shallow depth of field

Material rendering and fine detail test both models' capabilities differently. Pro Ultra's 4MP resolution provides genuine advantages in detail-intensive subjects—individual filigree elements, texture variations, and subtle reflections remain distinct when examined closely. For product photography destined for print or close viewing, those extra pixels matter. The raw mode adds authentic metallic rendering with natural color response.

Nano Banana Pro renders materials with exceptional coherence—metals read as metals with appropriate reflectivity, velvet shows pile direction and depth, and the relationship between elements maintains physical plausibility. While resolution is lower, the quality of rendering within those pixels tends toward maximum fidelity. For digital display where viewers won't zoom beyond 100%, Nano Banana Pro's quality per pixel may matter more than Pro Ultra's additional pixels.

Note: Pro Ultra's 4MP resolution matters most when images will be printed large, cropped significantly, or examined at pixel level. For standard digital display, both models produce excellent detail at their respective resolutions.

Deep Dive

Creative and Atmospheric Subjects

Testing how each model interprets artistic direction and mood.

Flux 1.1 Pro Ultra
"Abandoned greenhouse overtaken by nature, morning mist filte..."
Flux 1.1 Pro Ultra result
Model: flux-1.1-pro-ultra
Abandoned greenhouse overtaken by nature, morning mist filtering through broken glass roof, tropical plants reclaiming rusted iron framework, delicate interplay of decay and growth, fine art photography
Nano Banana Pro
"Abandoned greenhouse overtaken by nature, morning mist filte..."
Nano Banana Pro result
Model: nano-banana-pro
Abandoned greenhouse overtaken by nature, morning mist filtering through broken glass roof, tropical plants reclaiming rusted iron framework, delicate interplay of decay and growth, fine art photography

Artistic subjects requiring mood interpretation reveal different strengths. Nano Banana Pro's semantic understanding excels at translating abstract concepts—"delicate interplay of decay and growth"—into visual elements. The model grasps thematic direction and composes accordingly, producing images that feel intentional rather than literal. For conceptual work where the prompt contains interpretive cues, this intelligence produces more satisfying results.

Pro Ultra approaches atmospheric subjects photographically, producing images that feel discovered rather than composed. The raw mode adds authentic character—light behaves naturally through broken glass, mist diffuses realistically, and imperfections in the scene feel like environmental truth rather than artistic choice. For documentary-style fine art where authenticity matters, Pro Ultra's approach has genuine appeal at less than half the cost.

Specifications

Feature Comparison

Technical specifications comparing native 4MP resolution with flagship multimodal quality.

FeatureFlux 1.1 Pro UltraNano Banana Pro
DeveloperBlack Forest LabsGoogle (via Fal.ai)
ArchitectureFLUX 1.1 Pro (4MP)Gemini 3 Pro
Output resolution4MP (2048x2048)1K-2K configurable
Image qualityExcellentBest-in-class
Text renderingGoodExcellent
PhotorealismExcellentExcellent
Generation speed~8s~8s
Relative cost1× (baseline)~2.5× more expensive
Raw mode
Aspect ratio options9 ratios10 ratios
ELO ratingN/A~1222
Quality score9/1010/10
Text score7/109/10
Realism score10/1010/10
Try It Yourself

Try Flux 1.1 Pro Ultra

Generate images and experience the difference between native 4MP resolution and flagship quality. Try detailed subjects for Pro Ultra and complex compositional prompts for Nano Banana Pro.

Generated visual
https://demo.imagegpt.host/image?prompt=Portrait+of+a+master+ceramicist+in+her+studio%2C+morning+light+filtering+through+dusty+windows%2C+hands+shaping+clay+on+a+pottery+wheel%2C+shelves+of+finished+work+behind%2C+documentary+photography&model=flux-1.1-pro-ultra

Frequently Asked Questions

Resolution or quality ceiling.
Match the tool to your workflow.