FeaturedNano Banana vs Seedream 4.0 | AI Image Editing Battle 2025

The AI image editing revolution has reached new heights in 2025, with two models dominating the scene: Google's Nano Banana and ByteDance's Seedream 4.0. Both have become incredibly popular for their game-changing multi-image editing capabilities, but they serve different creative needs. Nano Banana excels at precise, prompt-based editing with real-world accuracy, while Seedream 4.0 shines with advanced style transfers and seamless multi-image fusion. These aren't just simple filters—they're powerful tools that let you make complex modifications, blend multiple photos, and transform visual styles using simple text commands.

Choosing between them can be challenging, especially when creators struggle with inconsistent editing results or need specific features for their workflow. This comprehensive comparison will help you understand which model best suits your editing needs, whether you're making precise business adjustments or exploring creative transformations. The purpose of this guide is to provide tested insights through real comparisons, so you can make an informed decision.

Plus, you can try both models yourself—MimicPC has integrated both Nano Banana and Seedream 4.0, allowing you to test their editing capabilities online for free before choosing your preferred platform.

What is Nano Banana?

Nano Banana is Google DeepMind's top-rated image editing tool, integrated into the Gemini platform. It represents a major upgrade to Gemini's image editing capabilities, designed to make photo manipulation and creative editing accessible through simple text prompts.

Key Features and Capabilities

• Multi-photo combination: Upload and blend multiple photos together in the same scene
• Style transfer: Apply styles, colors, or textures from one image to another
• Specific prompt-based editing: Make precise edits using simple text commands like background changes, object replacement, and photo restoration
• Personal transformation: Change outfits, hairstyles, locations, or even transport yourself to different decades
• Advanced text rendering: Improved accuracy in generating and editing text within images

Primary Use Cases

• Creative photo editing: Personal photo enhancement, style experimentation, and artistic transformation
• Social media content: Creating engaging posts with combined elements and creative effects
• Personal styling: Testing different looks, hairstyles, and outfits virtually
• Restoration projects: Repairing and enhancing old photographs

What is Seedream 4.0?

Seedream 4.0 is ByteDance Seed's new-generation image creation model that integrates both image generation and editing capabilities into a unified architecture. It's designed to handle complex multimodal tasks with significantly faster inference speed than previous versions.

Key Features and Capabilities

• Batch processing: Upload multiple reference images and generate several outputs simultaneously
• Prompt-based editing: High-quality image creation and precise edits with single sentence commands
• 4K resolution output: Professional-grade image quality suitable for commercial use
• Knowledge-driven generation: Create educational illustrations, charts, and professional images with built-in reasoning
• Versatile style transformation: Professional styles including watercolor, cyberpunk, and custom artistic effects
• Complex multimodal tasks: Handle reference consistency and complex reasoning requirements

Primary Use Cases

• Educational content: Visual illustrations, charts, timelines, and instructional materials
• Professional design: Website mockups, posters, comparison charts, and commercial graphics
• Creative workflows: Batch processing for efficient content creation and style experimentation
• Technical illustration: Scientific diagrams, architectural comparisons, and specialized visual content

Head-to-Head Comparison: 10 Comprehensive Battles

1. Portrait Generation Quality

• Test Prompt: "A portrait of a cheerful young Japanese woman with shoulder-length wavy brown hair and warm brown eyes, wearing a soft pastel pink sweater and delicate pearl earrings, natural makeup with coral pink lips, shot on 35mm film with camera flash photography. The direct flash creates bright, even lighting typical of Japanese film photography from the 90s. Soft shadows and highlights on her gentle features. The background shows a cozy Japanese café with warm wooden interiors slightly blurred. Nostalgic film aesthetic with natural grain and slightly warm color temperature, reminiscent of disposable camera photography."

• My Testing Experience: Nano banana produces images that appear sharper and more high-definition with softer, more comfortable colors. In contrast, Seedream generates what looks more like a close-up headshot that's somewhat blurry, though it does achieve better saturation and light-shadow coordination.

2. Background Replacement and Environment Swapping

• Test Prompt: "Replace the background with New York Times Square, ensure the lighting remains natural, and keep the character consistent in appearance, style, and proportions."

• Test Prompt:"Replace the background of Image 1 with the background from Image 2. Naturally composite the main object/characters from Image 1 into the scene of Image 2, preserving scale, perspective, and lighting so it looks realistic. Do not alter or stylize the object/characters or the background—keep all textures, colors, and details consistent. Match lighting to Image 2’s environment, and ensure clean edges, correct depth, and seamless blending."

• My Testing Experience: For direct instruction-based background replacement (like changing to New York Times Square), Seedream performs better. Since the original image has sunset daylight, Seedream also replaces it with a daytime New York plaza background, creating better overall harmony. Nano banana changes it to nighttime Times Square, but the sunset light on the character's hair doesn't match well. However, when processing two input images, Nano banana shows better consistency, maintaining both character and background integrity, while Seedream slightly modifies the background (the areas highlighted in red boxes are changed).

3. Multi-Source Image Composition and Character Transfer

• Test Prompt: "Place the model from image 1 in the swimsuit from image 2, standing at the beach shown in image 3. Keep the model's appearance consistent with image 1 and ensure natural beach lighting."

• My Testing Experience: Both can maintain good consistency of character, product, and background in three-image fusion. Nano banana focuses more on overall presentation with a full-body model shot, but this means fewer details are visible. Seedream provides a half-body presentation that emphasizes details more, though the background integration feels somewhat awkward. Each has its strengths.

4. Text Editing and Typography Modification

• Test Prompt: "Replace the original text “50% OFF” on the poster with “Buy 1 Get 1 Free”, keeping the same font, style, and layout. It can be adjusted into two lines if needed, but make sure the typography and overall design remain unchanged."

• My Testing Experience: Seedream performs better in text and layout processing, successfully replacing text and maintaining proper typography. However, Nano banana places "Free" from "Buy 1 Get 1 Free" at the very bottom (highlighted in the red box), creating an incorrect expression.

5. Color Correction and Adjustment

• Test Prompt: "Change the car color to red."

• My Testing Experience: Both can correctly modify colors using the simplest prompts. I personally feel Nano banana slightly wins because it better matches the background, while Seedream's result is a bit too vivid red.

6. Camera Angle Transformation with Character Consistency

• Test Prompt: "Refer to this image, generate a new image from the 360-degree overhead view. Don't change the character's appearance and outfit."

• My Testing Experience: Angle transformation is Seedream's strength. It can maintain character consistency while completing angle conversion. Nano banana can also change angles, but the overall character becomes too small and not sharp enough. I personally think Seedream performs better.

7. Old Photo Restoration and Repair

• Test Prompt: " Comprehensively restore this old photograph: meticulously remove all cracks, tears, scratches, and stains; aggressively correct color fading, even in large affected areas, and restore vibrant, natural tones; enhance clarity and sharpness (deblurring); repair any damage or imperfections; and upscale to high-resolution quality."

• My Testing Experience: Seedream performs better in old photo restoration. It can effectively remove large stains and colorize photos, though the applied colors are a bit too yellow. Nano banana basically fails to restore - stains remain, colors stay in the old photo tone, and it only appears slightly sharper. Overall performance is lacking.

8. Object Removal

• Test Prompt: "Remove the man in front of the woman, and keep other elements the same."

• My Testing Experience: Both models can remove foreground people using simple prompts while maintaining main subject consistency. However, Nano banana produces sharper facial features, while Seedream's result is somewhat blurry.

9. Artistic Style Transfer

• Test Prompt: "Convert this image to the oil painting style."

• My Testing Experience: Both can effectively convert photos to oil painting style using simple prompts, but their oil painting styles differ. Nano banana creates a more artistic style with heavier brushstrokes, while Seedream maintains colors closer to the original image. Each has its merits.

10. High-Resolution Enhancement and Upscaling

• Test Prompt: "Enhance this low-resolution image to high-definition quality by intelligently upscaling and sharpening details. Improve image clarity, reduce pixelation, and enhance fine details such as hair strands, fabric textures, and facial features. The final result should appear crisp and professionally shot at high resolution while maintaining the original composition and avoiding artificial artifacts or over-sharpening."

• My Testing Experience: Seedream is clearly superior in high-definition enhancement, even showing sunlight rays hitting individual hair strands. Nano banana falls short, appearing about as blurry as the original image.

Summary and Recommendations

Based on comprehensive testing across 10 different image content editing scenarios, both AI image generator models show distinct strengths and weaknesses that make them suitable for different user groups and use cases.

Seedream excels in technical precision and complex transformations, making it ideal for professional photographers, graphic designers, and content creators who need reliable results for client work. Its superior performance in natural language editing for text modifications, angle transformation, photo restoration, and high-resolution enhancement makes it particularly valuable for commercial applications where accuracy and quality are paramount. The platform handles multiple images seamlessly, ensuring consistent images created meet professional standards.

Nano banana shines in creative applications and visual aesthetics, making it perfect for social media content creators, digital artists, and casual users who prioritize visual appeal and artistic expression. Its strength in portrait generation, color harmony, and artistic style transfer makes it an excellent choice for personal projects and creative endeavors. The image generator produces visually striking images created through intuitive natural language editing, especially when working with multiple images for artistic compositions.

Performance Comparison Table

Recommendation Summary:

• Choose Seedream for professional work, technical accuracy, and complex editing tasks
• Choose Nano banana for creative projects, aesthetic appeal, and social media content

Ready to Experience AI Image Magic Yourself?

Don't just take our word for it - try these cutting-edge AI image generation and editing tools yourself! Whether you're a professional designer or simply curious about AI technology, there's no better way to understand these capabilities than hands-on experience.

Try SeedDream on MimicPC today - Perfect for professional editing with technical precision and reliable results for commercial projects.

Try Nano banana on MimicPC today - Ideal for creative projects with artistic flair and visually stunning social media content.