Flux Ultra 1.1 vs Nano Banana Pro
Eye-catching and expressive thumbnail imagery — see how these models compare with real AI-generated outputs.
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Choosing the right model for YouTube thumbnails comes down to two things: stopping the scroll and communicating the hook instantly. Flux Ultra 1.1 and Nano Banana Pro both deliver marketing-ready images, but they excel in different thumbnail-critical areas—photoreal detail versus text clarity and layout control.
Below is a practical comparison focused on expressive faces, bold composition, readable headline text, and export-ready resolution—plus how each model’s credit pricing maps to common thumbnail workflows.
YouTube Thumbnail — Side-by-Side Results
Prompt
"Close-up phone-camera shot of a 20s influencer with long wavy dark hair in a messy bun, wearing an oversized pastel hoodie and small hoop earrings, holding an iced coffee up to the lens with a wide-eyed “WAIT WHAT?!” surprised expression while glancing straight at the camera. Candid corner-table moment in a bright, colorful café with a pastry case and menu board blurred behind them, bold high-contrast lighting from a window and saturated tones for clickbait YouTube thumbnail energy. Dynamic composition with the coffee in the foreground, face filling most of the frame, slightly tilted selfie angle like an Instagram story screenshot."
Feature Comparison
| Feature | Flux Ultra 1.1 | Nano Banana Pro |
|---|---|---|
| Provider | Black Forest Labs | Google (Gemini 3 Pro) |
| Subcategories | text-to-image | text-to-image |
| 1080p / 2k Mode | Yes | Yes |
| 4k Mode | No | Yes |
| NSFW Rating | Strict | Medium |
| Aspect Ratio | 1:1, 16:9, 9:16, 3:4, 4:3, 21:9 | 1:1, 16:9, 9:16, 3:4, 4:3 |
| Starting Price | 16 credits | 22 credits |
Flux Ultra 1.1 Strengths
- Exceptional photorealistic detail for close-up faces, skin texture, hair, and cinematic lighting that pops in small thumbnail previews
- Premium-quality outputs that make product shots, lifestyle scenes, and dramatic “reaction” frames feel high-end
- Strong depth, contrast, and micro-detail that helps subjects stand out against busy backgrounds
- Efficient per-image pricing (16 credits) for rapid A/B testing of multiple thumbnail concepts
Nano Banana Pro Strengths
- Industry-leading text rendering for thumbnail headlines, badges, and labels that stay readable at small sizes
- Up to 4K output options for crisp scaling, reframing, and punch-in crops without losing sharpness
- Multimodal understanding to better align visuals with a specific concept, reference, or layout intent (useful for consistent thumbnail series)
- Marketing-grade polish that supports clean compositions, strong focal hierarchy, and brand-friendly styling
Verdict
Pick Flux Ultra 1.1 if your thumbnails rely on photoreal impact—expressive faces, dramatic lighting, and high-detail scenes that feel like a real camera shot. It’s also cost-effective for generating many variations quickly at a flat per-image rate.
Pick Nano Banana Pro if your thumbnails depend on readable on-image text, crisp typography, and resolution flexibility (especially when you frequently crop, zoom, or repurpose designs). It’s the stronger choice for text-forward thumbnail systems and brand-consistent templates.
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