Nano Banana Pro vs Seedream 4: Which Delivers Better Realism and Visual Consistency?
Why Visual Consistency Matters
Great AI images don’t just “look good.” They hold together across shots: stable skin tones, believable lighting, and textures that feel real at a glance and on close inspection. That’s why visual consistency now defines professional output for creators—whether you’re building product visuals, portraits, or cinematic frames.
Two of the leading contenders today are Nano Banana Pro and Seedream v4, both claim advanced AI visual generation performance, but their strengths differ sharply in speed, fidelity, and compositional realism.
This review examines them side-by-side across three practical dimensions — price, speed and generation quality — to help creators choose the right tool for their workflow.
Feature-by-Feature Comparison Table
| Dimension | Nano Banana Pro (Gemini 3.0 Pro Flash Image) | Seedream 4 (ByteDance) |
|---|---|---|
| Native Max Resolution | 1024×1024 (Use an upscaler for 2K–4K) | Up to 4K native |
| Avg. Speed @1024*1024 | ~10.49 s | ~6.35 s |
| Pricing | $0.038 / image | $0.027 / image |
| Strengths | Color/lighting adaptation; strong prompt understanding; face/identity stability | Faster renders; high-res detail; crisp micro-textures |
Performance Metrics
Speed
In 1024×1024 runs, Seedream 4 delivered images in ~6.35 s, while Nano Banana Pro took ~10.49 s—about 1.6× slower.
Realism and Color Accuracy
Nano Banana is known for background-aware lighting and skin-tone stability, keeping hue and exposure coherent across edits. Seedream 4 often produces sharper micro-texture and stronger edge contrast, which reads “crisp,” but can drift toward over-saturation in warm or neon scenes and may benefit from a light grade.
Resolution
Seedream 4 supports native 4K, which is ideal for posters and crops. Nano Banana Pro tops out at 1024×1024 natively; use an image upscaler to reach 2K–4K while preserving its balanced tones.
Showcases: Side-by-Side Results
Protocol for Fairness:
- Resolution: 1024×1024 for all pairs.
- Same prompt per pair.
- No manual retouching; default steps/CFG.
A – Product imagery
Prompt: high-end perfume bottle, clear glass with gold cap, on white-veined marble, soft daylight from left, realistic caustics in glass, controlled specular highlights, neutral white balance, minimal background reflection, 85mm perspective, shallow depth of field, product photography aesthetic.
Generated by Nano Banana Pro
Generated by Seedream v4
Nano Banana Pro followed the prompt more faithfully — the perfume bottle displays a gold cap, accurate light falloff, and realistic reflections on the marble surface. Seedream 4, while crisp, missed the gold hue specified in the prompt and produced a cooler, silver-toned bottle cap.
→ Winner: Nano Banana Pro
B – Portrait realism
Prompt: A cinematic close-up portrait of a 25-year-old East Asian woman in soft afternoon window light, neutral makeup, white linen shirt. Natural expression, clean skin with realistic pores, fine flyaway hair, accurate catchlights in both eyes, physically plausible subsurface scattering, gentle highlight roll-off, balanced exposure, 85mm lens perspective, shallow depth of field, background = blurred green foliage outside a wooden window, filmic contrast curve, color-true skin tones, no plastic smoothness, no over-sharpening.
Generated by Nano Banana Pro
Generated by Seedream v4
Nano Banana Pro generated the portrait with more natural skin tone transitions and balanced background blur. Facial structure and catchlights appear consistent with realistic optical depth.
Seedream 4 delivered crisper pores but slightly uneven hue on cheeks under mixed lighting.
→ Winner: Nano Banana Pro
C – Film frame
Prompt: Rainy night city street, neon reflections on wet asphalt, single subject walking with umbrella, wide cinematic composition, soft diffusion, subtle film grain, volumetric light cones, balanced cyan-amber grade, natural skin tone.
Generated by Nano Banana Pro
Generated by Seedream v4
The cinematic frame from Seedream 4 presents richer micro-contrast and stronger highlights in rain reflections, giving the scene a bolder film-grade impact. Nano Banana Pro is softer and more naturalistic, but Seedream 4’s tone curve better fits the stylized brief.
→ Winner: Seedream 4
When to Use Each Model
- Choose Nano Banana Pro when you need:
- Skin-tone fidelity and consistent faces across edits.
- Background-aware lighting that matches shadows and color temperature.
- Choose Seedream 4 when you need:
- Faster iteration and native 4K outputs.
- Crisp micro-textures for posters or detailed crops.
Test Nano Banana Pro and Seedream v4 Yourself
Benchmarks are useful; your pipeline is the truth. Run the same prompts and seeds and evaluate on your monitors, with your color profiles.
Try Nano Banana Pro and Seedream v4 today on WaveSpeedAI to experience the next generation of AI visual creation.
🔗Nano Banana Pro Text to Image
🔗Nano Banana Pro Image Editing
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