Photorealistic Portrait


6 Same-Prompt AI Image Tests
We tested both models with the same prompts across portraits, product ads, typography, infographics, multi-reference composition, and targeted image editing.
See the side-by-side results and choose the better model for your workflow.
Real test results






30-second verdict
Seedream performed better in our structured infographic and clean background-replacement tests. Nano Banana Pro produced stronger portrait contrast and kept more original scene elements during editing. Both models performed well in product advertising and English typography.
Quick comparison
Based on our six tests and currently published product specifications.
| Category | Seedream 5.0 Pro | Nano Banana Pro | Best choice |
|---|---|---|---|
| Structured infographic | Cleaner layout in our test | Stronger direction but more crowded | Seedream 5.0 Pro |
| Background replacement | Cleaner complete replacement | Preserved more original objects | Depends on the goal |
| English typography | Correct in tested examples | Correct in tested examples | Tie |
| Product advertising | Richer environment | Cleaner hero composition | Style preference |
| Reference inputs | Up to 10 on this platform | Up to 14 on supported products | Nano Banana Pro |
| Output resolution | 1K and 2K on this platform | Up to 4K on supported products | Nano Banana Pro |
| Search grounding | Not available on this platform | Available on supported Google products | Nano Banana Pro |
| Payment model | One-time credits | Subscription or API dependent | Depends |
Comparison scope: This page compares Seedream 5.0 Pro with Nano Banana Pro (Gemini 3 Pro Image). Seedream 5.0 Lite and Preview are different models, so their prices, speeds, and specifications are not used as Pro data.
Platform note: Seedream50pro.com currently supports prompt-based generation, up to 10 reference images, multiple aspect ratios, and 1K or 2K output. Some official Seedream editing controls are not exposed on this platform.
Six same-prompt tests
Each pair uses the same prompt, source images, aspect ratio, and resolution. Each result below describes only the images shown in that test.
What we tested
Skin texture, hands, studio lighting, depth of field, and overall portrait mood.
Prompt
A photorealistic editorial portrait of a 42-year-old Japanese ceramic artist in her sunlit studio, standing beside shelves of handmade bowls. Natural skin texture, a few loose strands of hair, clay dust on her indigo apron, soft window light from the left, subtle shadows, 85mm lens, eye-level medium close-up, shallow depth of field, muted earth tones. Keep both hands anatomically correct. No beauty retouching.


Seedream 5.0 Pro
Softer light and a warmer, more natural mood.
Nano Banana Pro
Stronger facial detail and contrast.
Shared finding
Both models followed the portrait prompt well.
What we tested
Product geometry, label text, glass, reflections, lighting, and advertising composition.
Prompt
Create a premium advertising image for a clear glass perfume bottle named AURELIA. Place the bottle on dark green marble with a small pool of water and one white magnolia flower. Show accurate glass refraction, crisp label text, realistic reflections, and a soft gold rim light. Add the exact headline “SCENT, REFINED.” in elegant uppercase type at the top. Use a square 1:1 composition with clean space around the product.


Seedream 5.0 Pro
Created a richer, more environmental product scene.
Nano Banana Pro
Produced a cleaner hero composition with stronger rim lighting.
Shared finding
Both rendered AURELIA and “SCENT, REFINED.” correctly.
What we tested
Exact English text, spelling, type hierarchy, grid structure, and negative space.
Prompt
Design a bold Swiss-style event poster on an off-white background. Use the exact headline “DESIGN FOR TOMORROW” in large black condensed type. Add the exact details “SEPTEMBER 18 — BROOKLYN” and “DOORS 6:30 PM” in smaller type. Use a strict grid, sharp alignment, one cobalt-blue circle, one red diagonal line, and generous negative space. Keep every word readable and spelled exactly as written. Use a square 1:1 format.


Seedream 5.0 Pro
Used more negative space and a restrained layout.
Nano Banana Pro
Created a stronger grid and clearer type hierarchy.
Shared finding
Both rendered every requested line correctly.
What we tested
Information hierarchy, required labels, three process steps, and diagram clarity.
Prompt
Create a clear educational infographic titled “HOW A SOLAR ECLIPSE WORKS.” Show the Sun, Moon, and Earth in the correct order. Label the umbra, penumbra, total eclipse path, and partial eclipse region. Add three short steps: “1. The Moon moves between Earth and the Sun.” “2. The Moon casts a shadow on Earth.” “3. Viewers in the umbra see totality.” Use a dark navy background, clean vector-style diagrams, white labels, and yellow highlights. Use a square 1:1 layout. Keep the science and all text accurate.


Seedream 5.0 Pro
Produced the cleaner information hierarchy.
Nano Banana Pro
Used stronger arrows and visual direction.
Shared finding
Both included the main eclipse stages and labels.
What we tested
Combining a person, desk, laptop, and green lamp into one realistic office scene.
Prompt
Use all provided reference images to create one realistic lifestyle scene. Place the same person from Reference 1 at the oak desk from Reference 2, using the silver laptop from Reference 3, with the green desk lamp from Reference 4 on the left. Preserve the person’s face, hair, clothing, and body proportions. Preserve each product’s shape, color, logo, and material. Use warm late-afternoon light, a modern home office, natural perspective, and editorial photography. Use a square 1:1 composition.


Seedream 5.0 Pro
Created a warmer, more natural-looking scene.
Nano Banana Pro
Created a more formal office composition.
Shared finding
The source images are not displayed, so reference preservation cannot be scored.
What we tested
Bottle and label preservation, full background replacement, lighting, and scene continuity.
Prompt
Edit the provided product photo. Keep the bottle, cap, label, logo, size, position, and proportions unchanged. Replace only the background with a bright modern bathroom made of pale travertine. Add soft daylight from the left, a subtle reflection beneath the bottle, and a small blurred eucalyptus branch in the far background. Match the new light and shadows to the original product. Do not change, rewrite, or remove any label text.



Seedream 5.0 Pro
Made a cleaner, more complete background replacement.
Nano Banana Pro
Preserved more original objects, including the sponge and stones.
Shared finding
Both preserved the bottle and label.
Overall results
A compact summary of the six image pairs shown above.
| Test | Result | Main observation |
|---|---|---|
| Photorealistic portrait | Style preference | Softer mood vs. stronger contrast |
| Product advertising | Close | Richer scene vs. cleaner hero image |
| Typography poster | Close | Both rendered the requested English text |
| Structured infographic | Seedream 5.0 Pro | Cleaner information hierarchy |
| Multi-reference composition | Inconclusive | Source references are not displayed |
| Targeted image edit | Depends on goal | Cleaner replacement vs. stronger preservation |
Want to run your own comparison? Explore Seedream 5.0 Pro prompts or open the image generator.
Official capabilities
These capabilities come from official product materials but were not evaluated in the six tests above. Availability depends on the product or API you use.
Choose by use case
| Your workflow | Recommended starting point | Why |
|---|---|---|
| Structured infographic | Seedream 5.0 Pro | Cleaner layout in our test |
| Clean background replacement | Seedream 5.0 Pro | Replaced more of the original scene |
| Preserve original scene elements | Nano Banana Pro | Kept more original objects |
| Google-grounded visual information | Nano Banana Pro | Supported Search grounding |
| Product ads | Test both | Different but competitive compositions |
| English typography | Test both | Both rendered the requested text correctly |
| Multi-reference identity preservation | Test both | Current test is not conclusive |
Pricing and access
| Access detail | Seedream50pro.com | Nano Banana Pro |
|---|---|---|
| Free access | 5 credits for eligible new users | Depends on the Google product |
| Free output | One successful 1K image | Usage limits vary |
| Paid access | One-time credit packs | Subscription or API billing |
| Credit expiration | Purchased credits never expire | Depends on the access point |
| Output | 1K and 2K | Up to 4K on supported products |
| Starting price | $9.90 for 160 credits | Check current Google pricing |
Final verdict
Seedream 5.0 Pro is the stronger starting point for structured commercial visuals, cleaner background replacement, and workflows that benefit from controlled image revisions.
Nano Banana Pro is the stronger starting point for Google-grounded information, larger reference workflows, supported 4K output, and users already working inside the Gemini ecosystem.
For portraits, product advertising, and English typography, both models produced competitive results in our tests. The better choice depends on the visual style you prefer and how much of the original scene you want to preserve.
Common questions
There was no single winner in our six tests. Seedream often produced cleaner or warmer layouts. Nano Banana Pro often produced stronger contrast or kept more of the original scene. The better choice depends on your task.
In our background-replacement test, both models preserved the bottle and label. Seedream made a cleaner replacement. Nano Banana Pro kept more of the original scene. ByteDance also describes point, lasso, and sketch editing on supported platforms, but those controls are not available on this site.
Both models rendered the requested English text correctly in our product-ad and poster tests. Google also promotes multilingual text and localization as Nano Banana Pro features.
Both produced competitive product ads in our test. Seedream created a richer environment. Nano Banana Pro created a cleaner hero composition with stronger rim lighting. The better result depends on the visual style you prefer.
Both models included the main labels and steps in our eclipse test. Seedream produced the cleaner layout. Nano Banana Pro used stronger visual direction, but the result was more crowded.
Seedream50pro.com accepts up to 10 reference images. Google states that supported Nano Banana Pro products can accept up to 14 inputs.
Eligible new users may receive 5 signup credits. That is enough for one successful 1K generation. No credit card is required.
Seedream50pro.com currently offers 1K and 2K generation. Nano Banana Pro promotes up to 4K through supported Google products.
Eligible new users may receive 5 signup credits—enough for one successful 1K generation without entering a credit card.