Model Comparison

Flux 1 Schnell vs Nano Banana Pro

The widest quality gap in our model lineup: sub-second budget generation versus flagship quality at roughly 45x the cost. This represents the full spectrum from rapid prototyping to premium final deliverables.

Comparison10 min read
Background

Budget Foundation vs Premium Ceiling

Flux 1 Schnell from Black Forest Labs represents the entry point for AI image generation. "Schnell" (German for "fast") describes its purpose—distilled to 12 billion parameters and optimized for sub-second inference. As our most affordable model, it's designed for volume: rapid iteration, concept exploration, and workflows where speed and cost matter more than maximum fidelity.

Nano Banana Pro represents the opposite end of the spectrum. Despite the playful name, this is Google's Gemini 3 Pro image model made accessible through FAL's infrastructure. Priced at roughly 45x more than Schnell, it sits alongside models like GPT Image 1.5 High at the premium tier—and delivers accordingly. ELO rating of ~1222 places it among the top 3 models in public benchmarks.

The 172-point ELO gap between these models (1050 vs 1222) is enormous—comparable to the difference between a club player and a grandmaster in chess. This translates to visible differences in photorealistic detail, coherent composition, lighting physics, and the subtle qualities that make images feel "real" rather than "generated."

This isn't a fair fight in quality terms—Nano Banana Pro will win nearly every comparison. The real question is: when does the 45x price premium actually matter? For many projects, the answer might be "rarely" or "only for finals."

Note: Nano Banana Pro offers 1K and 2K resolution options. The 2K mode generates significantly higher detail images but may take longer. For most use cases, 1K provides excellent quality with faster turnaround.

Side by Side

Visual Comparison

Compare outputs from both models using identical prompts. The quality gap is immediately apparent in fine detail, lighting realism, and overall coherence.

PromptFlux 1 SchnellNano Banana Pro
Editorial PortraitClose-up portrait of a weathered fisherman at dawn, deep wrinkles telling stories, salt spray in the air, golden hour light catching his silver beard, National Geographic documentary quality
Flux 1 Schnell - Editorial Portrait
Model: flux-1-schnell
Close-up portrait of a weathered fisherman at dawn, deep wrinkles telling stories, salt spray in the air, golden hour light catching his silver beard, National Geographic documentary quality
Nano Banana Pro - Editorial Portrait
Model: nano-banana-pro
Close-up portrait of a weathered fisherman at dawn, deep wrinkles telling stories, salt spray in the air, golden hour light catching his silver beard, National Geographic documentary quality
Fine DiningMichelin-star plated dessert, dark chocolate sphere with gold leaf, raspberry coulis, mint garnish, dramatic rim lighting on slate plate, fine dining magazine photography
Flux 1 Schnell - Fine Dining
Model: flux-1-schnell
Michelin-star plated dessert, dark chocolate sphere with gold leaf, raspberry coulis, mint garnish, dramatic rim lighting on slate plate, fine dining magazine photography
Nano Banana Pro - Fine Dining
Model: nano-banana-pro
Michelin-star plated dessert, dark chocolate sphere with gold leaf, raspberry coulis, mint garnish, dramatic rim lighting on slate plate, fine dining magazine photography
Luxury ProductLimited edition mechanical watch on obsidian surface, visible movement through sapphire caseback, soft focus background with burgundy velvet, high-end advertising photography
Flux 1 Schnell - Luxury Product
Model: flux-1-schnell
Limited edition mechanical watch on obsidian surface, visible movement through sapphire caseback, soft focus background with burgundy velvet, high-end advertising photography
Nano Banana Pro - Luxury Product
Model: nano-banana-pro
Limited edition mechanical watch on obsidian surface, visible movement through sapphire caseback, soft focus background with burgundy velvet, high-end advertising photography
Atmospheric SceneAbandoned grand ballroom reclaimed by nature, shafts of dusty light through broken ceiling, vines climbing marble columns, grand piano covered in moss, cinematic wide shot
Flux 1 Schnell - Atmospheric Scene
Model: flux-1-schnell
Abandoned grand ballroom reclaimed by nature, shafts of dusty light through broken ceiling, vines climbing marble columns, grand piano covered in moss, cinematic wide shot
Nano Banana Pro - Atmospheric Scene
Model: nano-banana-pro
Abandoned grand ballroom reclaimed by nature, shafts of dusty light through broken ceiling, vines climbing marble columns, grand piano covered in moss, cinematic wide shot
Wildlife DetailMacro photograph of a monarch butterfly emerging from chrysalis, wings still wet and crumpled, dewdrops catching morning light, shallow depth of field, nature documentary quality
Flux 1 Schnell - Wildlife Detail
Model: flux-1-schnell
Macro photograph of a monarch butterfly emerging from chrysalis, wings still wet and crumpled, dewdrops catching morning light, shallow depth of field, nature documentary quality
Nano Banana Pro - Wildlife Detail
Model: nano-banana-pro
Macro photograph of a monarch butterfly emerging from chrysalis, wings still wet and crumpled, dewdrops catching morning light, shallow depth of field, nature documentary quality

New to ImageGPT?

ImageGPT provides access to both Flux 1 Schnell and Nano Banana Pro through a single API. Prototype rapidly with our budget-tier Schnell, then switch to Nano Banana Pro for flagship-quality finals—seamless routing with no provider management.

Recommendations

When to Use Each Model

The choice is straightforward: Schnell for volume and speed, Nano Banana Pro when quality is the only metric that matters.

Flux 1 Schnell

  • Rapid concept exploration and iteration
  • High-volume batch generation workflows
  • Quick mockups and placeholders
  • Cost-sensitive projects with flexible quality needs
  • Image-to-image variations and experimentation

Nano Banana Pro

  • Hero images and featured visual content
  • Print-quality deliverables and advertising
  • Projects where photorealism is non-negotiable
  • Final renders after concept approval
  • High-stakes visuals where cost is secondary
Deep Dive

Portrait Detail

Examining skin texture, lighting, and the subtle qualities that separate good from exceptional portraits.

Flux 1 Schnell
"Intimate portrait of a classical violinist mid-performance, ..."
Flux 1 Schnell result
Model: flux-1-schnell
Intimate portrait of a classical violinist mid-performance, eyes closed in concentration, stage lighting creating dramatic shadows, visible texture of velvet jacket, concert hall bokeh background, editorial photography
Nano Banana Pro
"Intimate portrait of a classical violinist mid-performance, ..."
Nano Banana Pro result
Model: nano-banana-pro
Intimate portrait of a classical violinist mid-performance, eyes closed in concentration, stage lighting creating dramatic shadows, visible texture of velvet jacket, concert hall bokeh background, editorial photography

Portrait photography is where the quality gap becomes most apparent. The prompt tests multiple challenges simultaneously: realistic skin rendering, fabric texture, dramatic lighting, and the ineffable quality of "presence" that makes a portrait feel authentic rather than synthetic.

Nano Banana Pro typically produces portraits with visible pore texture, natural skin color variation, and lighting that behaves physically correctly—light falloff, subsurface scattering, and realistic shadows. Schnell generates pleasant portraits quickly, but skin often appears smoother and lighting more uniform, lacking the subtle imperfections that read as "real."

Tip: For portraits where realism matters, Nano Banana Pro's 2K resolution option adds significant detail in skin texture and hair. Worth the extra generation time for hero shots.

Deep Dive

Complex Scene Coherence

Testing how each model handles multi-element compositions with spatial relationships.

Flux 1 Schnell
"Bustling Tokyo fish market at dawn, vendors arranging gliste..."
Flux 1 Schnell result
Model: flux-1-schnell
Bustling Tokyo fish market at dawn, vendors arranging glistening tuna on ice, customers examining the catch, steam rising from nearby food stalls, morning light filtering through the warehouse structure, documentary photography
Nano Banana Pro
"Bustling Tokyo fish market at dawn, vendors arranging gliste..."
Nano Banana Pro result
Model: nano-banana-pro
Bustling Tokyo fish market at dawn, vendors arranging glistening tuna on ice, customers examining the catch, steam rising from nearby food stalls, morning light filtering through the warehouse structure, documentary photography

Complex scenes with multiple subjects, spatial depth, and various materials reveal a model's understanding of visual coherence. This prompt tests the ability to compose a believable scene with correct spatial relationships, consistent lighting, and appropriate detail distribution.

Schnell can capture the general mood and elements of such scenes but often struggles with spatial coherence—objects may overlap incorrectly, scale may be inconsistent, or lighting might not behave consistently across the scene. Nano Banana Pro's Gemini 3 architecture excels at scene understanding, producing compositions where elements relate correctly in 3D space.

Deep Dive

Material Rendering

How accurately each model renders different surface properties and textures.

Flux 1 Schnell
"Still life composition: aged leather journal, brass compass ..."
Flux 1 Schnell result
Model: flux-1-schnell
Still life composition: aged leather journal, brass compass with patina, antique fountain pen, crumpled map, all on weathered wooden desk, soft window light revealing surface textures, product photography quality
Nano Banana Pro
"Still life composition: aged leather journal, brass compass ..."
Nano Banana Pro result
Model: nano-banana-pro
Still life composition: aged leather journal, brass compass with patina, antique fountain pen, crumpled map, all on weathered wooden desk, soft window light revealing surface textures, product photography quality

Material rendering separates good image models from exceptional ones. This prompt combines multiple challenging surfaces—aged leather, oxidized brass, paper, wood grain—each with distinct reflective and textural properties.

Nano Banana Pro renders materials with their correct physical properties: leather shows grain and wear patterns, brass has realistic patina and reflection, paper has appropriate translucency at edges. Schnell tends to produce more generic surface textures—materials are identifiable but lack the specific character that makes each surface feel authentic.

Note: For product photography where material accuracy affects perceived value (jewelry, leather goods, watches), the quality difference often justifies the premium cost.

Deep Dive

Text Rendering

Comparing accuracy when prompts require readable text in the generated image.

Flux 1 Schnell
"Vintage bookshop window display, hand-lettered sign reading ..."
Flux 1 Schnell result
Model: flux-1-schnell
Vintage bookshop window display, hand-lettered sign reading 'RARE EDITIONS', stacked leather-bound books visible behind glass, warm interior glow, rainy evening reflection in window, atmospheric street photography
Nano Banana Pro
"Vintage bookshop window display, hand-lettered sign reading ..."
Nano Banana Pro result
Model: nano-banana-pro
Vintage bookshop window display, hand-lettered sign reading 'RARE EDITIONS', stacked leather-bound books visible behind glass, warm interior glow, rainy evening reflection in window, atmospheric street photography

Text rendering remains challenging for most image models, but the capability gap is significant here. This prompt tests whether each model can produce legible, stylistically appropriate text as part of a cohesive scene.

Schnell's text rendering is basic—it may produce something that looks like letters but rarely achieves consistent, readable results. Nano Banana Pro, inheriting Gemini 3's multimodal understanding, handles text significantly better. While not perfect, it often produces legible text that integrates naturally into scenes.

Deep Dive

The Value Calculation

When does 45x the cost make sense? Breaking down the practical economics.

Schnell: Budget (~1s)
"Fashion editorial, model in tailored wool coat, autumn leave..."
Schnell: Budget (~1s) result
Model: flux-1-schnell
Fashion editorial, model in tailored wool coat, autumn leaves in motion, golden hour park setting, shallow depth of field, Vogue aesthetic, full length portrait
Nano Banana Pro: Premium (~8s)
"Fashion editorial, model in tailored wool coat, autumn leave..."
Nano Banana Pro: Premium (~8s) result
Model: nano-banana-pro
Fashion editorial, model in tailored wool coat, autumn leaves in motion, golden hour park setting, shallow depth of field, Vogue aesthetic, full length portrait

Fashion photography combines all the challenging elements: fabric texture, skin quality, lighting, movement, and overall aesthetic coherence. It's also a domain where quality directly impacts commercial value—the difference between "good enough" and "editorial quality" can determine whether an image gets used.

For the cost of one Nano Banana Pro image, you could generate roughly 45 Schnell images. For exploration and concept development, that volume is invaluable. But for the final hero shot that represents a campaign or publication, the quality difference of Nano Banana Pro often eliminates the need for multiple regenerations—one generation frequently delivers a usable result.

Tip: A practical budget split: use 80% of your budget for Schnell exploration (find concepts, test prompts, iterate quickly), then invest 20% in Nano Banana Pro for final deliverables where quality is the only metric.

Specifications

Feature Comparison

Technical specifications showing the full capability gap between these models.

FeatureFlux 1 SchnellNano Banana Pro
Release20242025
ArchitectureFLUX.1 (distilled)Gemini 3 Pro (via FAL)
CreatorBlack Forest LabsGoogle (FAL wrapper)
Image qualityGoodFlagship
Text renderingBasicExcellent
PhotorealismGoodFlagship
Generation speed~1s~8s
Cost per image (1MP)Budget tierPremium tier (~45x more)
Image input support
Aspect ratio options5 ratios10 ratios
Resolution optionsStandard1K / 2K
Output formatsjpeg, pngjpeg, png, webp
ELO rating~1050~1222
Try It Yourself

Try Flux 1 Schnell

Generate your own images and see the quality difference firsthand. Try detailed portrait or product prompts to see where the premium investment pays off.

Generated visual
https://demo.imagegpt.host/image?prompt=Cinematic+portrait+of+an+elderly+Japanese+master+calligrapher+in+his+traditional+studio%2C+ink+brush+poised+mid-stroke%2C+paper+scattered+across+a+low+wooden+table%2C+afternoon+light+filtering+through+shoji+screens%2C+environmental+documentary+photography&model=flux-1-schnell

Frequently Asked Questions

Budget or flagship.
Both have their place.