Model Comparison

Nano Banana Pro vs Seedream V4.5

A comparison between Google's flagship image quality delivered through FAL and ByteDance's value-oriented powerhouse. One costs nearly 4x more but scores higher on benchmarks. The other generates 3x faster at a fraction of the price. Understanding when each model's strengths justify its trade-offs is key to optimizing your workflow.

Comparison8 min read
Background

Premium vs Value in the High-Quality Tier

Nano Banana Pro is Google's Gemini 3 Pro image generation capabilities made available through FAL's infrastructure. It represents one of the highest quality options currently available, with an ELO around 1222 placing it among the top-ranked models in benchmark competitions. The model excels at photorealism, character consistency, and particularly strong text rendering. However, this quality comes at a premium cost and generation times around 8 seconds.

Seedream V4.5 is ByteDance's flagship image generation model, continuing the lineage of their successful Seedream series. With an ELO around 1147, it sits comfortably in the upper tier of available models. What makes Seedream particularly compelling is its combination of quality, speed, and features: fast generation at ~2.5 seconds, 4K resolution support, image-to-image capabilities, and built-in prompt enhancement—all at a fraction of the premium model cost.

The pricing difference is stark. Nano Banana Pro costs nearly 4x as much as Seedream. For the same budget, you could generate almost four Seedream images for every one from Nano Banana Pro. This raises the central question: does the ~75 ELO point difference and Nano Banana's superior text rendering justify the premium in your specific use case?

Both models support image input for editing workflows, though Seedream adds prompt enhancement that can help users achieve better results without extensive prompt engineering. Seedream also supports 4K resolution at no additional cost, while Nano Banana Pro maxes out at 2K. These feature differences matter depending on your production requirements.

Tip: For most professional use cases, Seedream V4.5 delivers excellent results at dramatically lower cost. Reserve Nano Banana Pro for hero images, text-heavy designs, or situations where absolute maximum quality is non-negotiable.

Side by Side

Visual Comparison

Compare outputs from both models using identical prompts. Look for differences in detail rendering, lighting quality, and overall polish.

PromptNano Banana ProSeedream V4.5
PortraitClose-up portrait of a watchmaker at work, magnifying loupe over one eye, intricate mechanism visible, focused concentration, warm workshop lighting, documentary photography style
Nano Banana Pro - Portrait
Model: nano-banana-pro
Close-up portrait of a watchmaker at work, magnifying loupe over one eye, intricate mechanism visible, focused concentration, warm workshop lighting, documentary photography style
Seedream V4.5 - Portrait
Model: seedream-v4.5
Close-up portrait of a watchmaker at work, magnifying loupe over one eye, intricate mechanism visible, focused concentration, warm workshop lighting, documentary photography style
ProductHandcrafted leather journal on an antique wooden desk, fountain pen beside it, warm afternoon light through a window, high-end product photography with shallow depth of field
Nano Banana Pro - Product
Model: nano-banana-pro
Handcrafted leather journal on an antique wooden desk, fountain pen beside it, warm afternoon light through a window, high-end product photography with shallow depth of field
Seedream V4.5 - Product
Model: seedream-v4.5
Handcrafted leather journal on an antique wooden desk, fountain pen beside it, warm afternoon light through a window, high-end product photography with shallow depth of field
ArchitectureModern minimalist living room with floor-to-ceiling windows overlooking mountains, clean lines, designer furniture, golden hour light flooding the space, architectural photography
Nano Banana Pro - Architecture
Model: nano-banana-pro
Modern minimalist living room with floor-to-ceiling windows overlooking mountains, clean lines, designer furniture, golden hour light flooding the space, architectural photography
Seedream V4.5 - Architecture
Model: seedream-v4.5
Modern minimalist living room with floor-to-ceiling windows overlooking mountains, clean lines, designer furniture, golden hour light flooding the space, architectural photography
NatureMonarch butterfly resting on a wildflower, morning dew drops visible, soft bokeh background of a meadow, macro wildlife photography with natural lighting
Nano Banana Pro - Nature
Model: nano-banana-pro
Monarch butterfly resting on a wildflower, morning dew drops visible, soft bokeh background of a meadow, macro wildlife photography with natural lighting
Seedream V4.5 - Nature
Model: seedream-v4.5
Monarch butterfly resting on a wildflower, morning dew drops visible, soft bokeh background of a meadow, macro wildlife photography with natural lighting
LifestyleChef plating a fine dining dish in a professional kitchen, steam rising, precise movements, stainless steel surfaces reflecting overhead lights, editorial food photography
Nano Banana Pro - Lifestyle
Model: nano-banana-pro
Chef plating a fine dining dish in a professional kitchen, steam rising, precise movements, stainless steel surfaces reflecting overhead lights, editorial food photography
Seedream V4.5 - Lifestyle
Model: seedream-v4.5
Chef plating a fine dining dish in a professional kitchen, steam rising, precise movements, stainless steel surfaces reflecting overhead lights, editorial food photography

New to ImageGPT?

ImageGPT provides access to both Nano Banana Pro and Seedream V4.5 through a single API. Compare both models with your own prompts to find the right balance of quality and cost. Start with a 7-day free trial.

Recommendations

When to Use Each Model

Both models produce high-quality output—the choice comes down to whether you need absolute top-tier quality or want excellent results at much lower cost.

Seedream V4.5

  • Production workflows with volume requirements
  • Fast turnaround projects (~2.5s generation)
  • 4K resolution output without premium pricing
  • Image-to-image editing and iteration
  • Users who benefit from prompt enhancement
  • Budget-conscious professional work

Nano Banana Pro

  • Hero images and flagship marketing assets
  • Text-heavy designs requiring accuracy
  • Maximum quality regardless of cost
  • Character consistency in complex scenes
  • Benchmark-critical applications
  • Final renders after iteration elsewhere
Deep Dive

Photorealistic Portraits

Testing human rendering quality, skin texture, and lighting accuracy.

Nano Banana Pro
"Portrait of a marine biologist on a research vessel, weather..."
Nano Banana Pro result
Model: nano-banana-pro
Portrait of a marine biologist on a research vessel, weathered face with laugh lines, sea spray in hair, overcast ocean light, authentic documentary photography capturing genuine character
Seedream V4.5
"Portrait of a marine biologist on a research vessel, weather..."
Seedream V4.5 result
Model: seedream-v4.5
Portrait of a marine biologist on a research vessel, weathered face with laugh lines, sea spray in hair, overcast ocean light, authentic documentary photography capturing genuine character

Portrait photography with environmental context tests how each model handles human features, natural lighting, and atmospheric conditions. The marine biologist scene requires convincing skin textures, realistic hair behavior in wind, and authentic weathering that tells a story.

In our testing, both models produced compelling portraits, though Nano Banana Pro showed marginally better handling of fine facial details and more naturalistic skin rendering. Seedream V4.5's output was excellent and would satisfy most professional requirements, with slightly more processed-looking results in some generations. The quality gap narrows considerably when you consider the 4x cost difference.

Note: For hero portraits on marketing materials or editorial spreads, Nano Banana Pro's edge may justify the premium. For social media, web content, or internal materials, Seedream delivers professional results at dramatically lower cost.

Deep Dive

Product Photography

Comparing material rendering and commercial photography quality.

Nano Banana Pro
"Luxury mechanical watch on a black velvet display, macro sho..."
Nano Banana Pro result
Model: nano-banana-pro
Luxury mechanical watch on a black velvet display, macro shot showing gear mechanism through exhibition caseback, dramatic spotlight creating metallic reflections, high-end catalog photography
Seedream V4.5
"Luxury mechanical watch on a black velvet display, macro sho..."
Seedream V4.5 result
Model: seedream-v4.5
Luxury mechanical watch on a black velvet display, macro shot showing gear mechanism through exhibition caseback, dramatic spotlight creating metallic reflections, high-end catalog photography

Product photography demands precise material rendering, controlled lighting, and attention to reflective surfaces. A luxury watch with visible mechanics tests metal textures, glass clarity, and the interplay of light across multiple surfaces.

Both models handled this challenging subject well. Nano Banana Pro produced slightly more refined metallic textures and cleaner reflections on glass surfaces. Seedream V4.5's output was commercial-quality and would work well for most e-commerce or marketing applications. The difference becomes most apparent when examining fine mechanical details at full resolution.

Deep Dive

Text Rendering

Testing typography accuracy and legibility in generated images.

Nano Banana Pro
"Vintage neon sign reading 'OPEN 24 HOURS' against a rainy ci..."
Nano Banana Pro result
Model: nano-banana-pro
Vintage neon sign reading 'OPEN 24 HOURS' against a rainy city night, reflections on wet pavement, atmospheric urban photography with cinematic color grading
Seedream V4.5
"Vintage neon sign reading 'OPEN 24 HOURS' against a rainy ci..."
Seedream V4.5 result
Model: seedream-v4.5
Vintage neon sign reading 'OPEN 24 HOURS' against a rainy city night, reflections on wet pavement, atmospheric urban photography with cinematic color grading

Text rendering is one of the most challenging aspects of image generation. A neon sign tests letter formation, consistent styling, and the additional complexity of glowing effects and reflections.

This is where Nano Banana Pro's advantage becomes clear. Its text rendering consistently produced more accurate letterforms with better consistency across the sign. Seedream V4.5's text was often good but showed more variation between generations and occasional character issues. For designs requiring readable text, Nano Banana Pro justifies its premium here.

Tip: If your project requires accurate text rendering, Nano Banana Pro is worth the additional cost. For images where text isn't critical or is decorative, Seedream's output is typically sufficient.

Deep Dive

Complex Scene Composition

Testing handling of multiple elements and environmental detail.

Nano Banana Pro
"Bustling fish market at dawn, vendors arranging fresh catch ..."
Nano Banana Pro result
Model: nano-banana-pro
Bustling fish market at dawn, vendors arranging fresh catch on ice, morning light streaming through canvas awnings, customers examining seafood, authentic street photography capturing movement and activity
Seedream V4.5
"Bustling fish market at dawn, vendors arranging fresh catch ..."
Seedream V4.5 result
Model: seedream-v4.5
Bustling fish market at dawn, vendors arranging fresh catch on ice, morning light streaming through canvas awnings, customers examining seafood, authentic street photography capturing movement and activity

Complex scenes with multiple subjects, varied lighting, and environmental detail test a model's ability to maintain coherence across the entire frame. A busy market scene requires convincing human figures, realistic food presentation, and atmospheric lighting.

Both models produced compelling market scenes with good compositional balance. Nano Banana Pro showed slightly better consistency in human figures and more naturalistic crowd behavior. Seedream V4.5 occasionally produced figures with minor anatomical issues but overall delivered scenes that would work well for most applications. The quality difference was present but not dramatic.

Deep Dive

Cost-Benefit Analysis

Understanding when the premium justifies itself.

Nano Banana Pro: Premium (~8s)
"Artisan cheese board with aged varieties, fresh figs, honeyc..."
Nano Banana Pro: Premium (~8s) result
Model: nano-banana-pro
Artisan cheese board with aged varieties, fresh figs, honeycomb, and crackers on slate, soft natural window light, high-end food photography for lifestyle magazine
Seedream V4.5: Budget (~2.5s)
"Artisan cheese board with aged varieties, fresh figs, honeyc..."
Seedream V4.5: Budget (~2.5s) result
Model: seedream-v4.5
Artisan cheese board with aged varieties, fresh figs, honeycomb, and crackers on slate, soft natural window light, high-end food photography for lifestyle magazine

The core question isn't which model is "better" but which delivers appropriate quality for your specific needs. Nano Banana Pro costs nearly 4x more than Seedream and also takes over 3x longer to generate. These trade-offs matter differently depending on your workflow.

For most production work, Seedream V4.5 represents the sweet spot: excellent quality, fast generation, 4K support, and reasonable cost. Reserve Nano Banana Pro for final hero images, text-critical designs, or situations where the absolute highest quality is required. A hybrid workflow—iterating with Seedream, finishing with Nano Banana Pro—often makes economic sense.

Tip: Consider a tiered approach: use Seedream V4.5 for exploration, iteration, and volume work (roughly 80% of generations), then switch to Nano Banana Pro for final hero images and text-heavy designs where maximum quality matters.

Specifications

Feature Comparison

Technical specifications comparing Google's premium flagship versus ByteDance's value champion.

FeatureNano Banana ProSeedream V4.5
Release20252025
ArchitectureGemini 3 Pro via FALByteDance proprietary
CreatorGoogle (via FAL)ByteDance
Image qualityExcellentExcellent
Text renderingExcellentGood
PhotorealismExcellentExcellent
ELO score~1222~1147
Generation speed~8s~2.5s
Cost per imagePremium (~4x)Budget-friendly (baseline)
Image input support
Aspect ratio options10 ratios8 ratios
Resolution options1K/2K1K/2K/4K
Prompt enhancement
Try It Yourself

Try Nano Banana Pro

Generate your own images to experience the quality difference firsthand. Try complex scenes with text or fine details to see where Nano Banana Pro's premium justifies itself.

Generated visual
https://demo.imagegpt.host/image?prompt=Portrait+of+an+architect+examining+blueprints+in+a+sunlit+studio%2C+large+windows+casting+geometric+shadows%2C+drafting+tools+and+scale+models+on+the+desk%2C+professional+documentary+photography&model=gemini-3-pro

Frequently Asked Questions

Premium flagship or
value champion?