You can upload up to 14 images to Nano Banana Pro at once. The model, built on Gemini 3 Pro Image, supports multi-input composition and cross-image mixing while maintaining the look and identity of up to five people across those images. This makes Nano Banana Pro a powerful tool for visual consistency and multi-element creative designs in 2025.
The Google official Nano Banana Pro service is currently very congested — especially for free users, who are limited to only three generations at lower resolution. The good news is that GlobalGPT has fully integrated Nano Banana Pro, allowing you to use it here freely and without restrictions.
What Is the Multi-Image Upload Feature in Nano Banana Pro
The multi-upload feature lets you combine different elements—objects, scenes, people, textures, and references—into one cohesive AI-generated image.
You can:
- Upload between 2 to 14 reference images simultaneously
- Set focus points or choose how each image contributes to the final composition
- Generate cinematic results in 16:9 aspect ratio or custom formats
Example prompt:
“Combine these 8 photos into a single fashion editorial shot in a desert setting, maintaining lighting and identity consistency.”
This process uses Gemini 3 Pro’s advanced reasoning and scene understanding to preserve details such as lighting direction, fabric texture, and facial features.
New Features in Nano Banana Pro’s Image Generation Capabilities
| Blog Topic | Verification Point |
|---|---|
| Number of Uploadable Images | Up to 14 reference images |
| Character Consistency | Maintain up to 5 people |
| High‑Fidelity Objects | Up to 6 high‑fidelity object images |
| Resolution Options | 1K / 2K / 4K output support |
| Aspect Ratio Support | Multiple ratios (1:1, 16:9, etc.) |
| Text Rendering Capability | Advanced text rendering, high readability, multilingual support |
| Search Grounding Feature | Uses Google Search for real‑time, fact‑based image generation |
| Thinking Process Mode | Generates “thinking images” in the background to optimize composition |
| Programming Example | Uses google‑genai SDK and PIL to generate images via API |
| Model Name | "gemini‑3‑pro‑image‑preview" |
Source: Official Google Nano Banana API Documentation
Maximum Upload Limit — Why 14 Images?
Google confirmed that Nano Banana Pro can process up to 14 image references per generation. This limit balances processing power with creative control:
- Max Inputs: 14 images – Combine photos, sketches, renders, or visual references at once
- Character Consistency: Up to 5 people – Maintain face and body identity across different images
- Resolution: 2K – 4K – Ideal for studio-grade and commercial use
- Aspect Ratios: 1:1, 16:9, 3:2 – Customize frame for social, poster, or film outputs
- Editing Modes: Merge / Remix / Transform – Blend elements into cinematic or lifestyle scenes
Behind the scenes, Gemini 3 Pro combines multi-image embeddings into a shared conceptual space, allowing the model to understand context and retain consistency throughout the composition.
How Nano Banana Pro Handles Image Consistency
Nano Banana Pro doesn’t just stack images—it interprets them. With each upload, the system maps lighting, textures, materials, and character features so the final output feels natural and cohesive.
It Maintains:
- Facial alignment and expressions
- Object proportion and depth
- Realistic shadow and lighting continuity
- Fabric and surface texture accuracy
- Scene tone and color grading
In practice, this means you can upload:
- Five person photos + nine background elements
- Sketches + blueprints + product visuals
- Brand mockups that need perfect cross-compatibility
Example: Combine a gown design, studio photo, plants, and furniture into one fashion scene. Nano Banana Pro naturally blends textures and colors without losing detail.
Recommended Upload Combinations
| Use Case | Input Images | Output Goal |
|---|---|---|
| Product ad render with logo integration | 6 inputs | Photorealistic mockup with consistent branding |
| Fashion shoot scene with multiple models | 10–14 inputs | Editorial-grade composition with natural lighting |
| Storyboard frames for film concept | 4–8 inputs | Sequential visuals for pre-production |
| Educational infographic series | 2–5 inputs | Fact-based diagrams and consistent layout |
| Architectural blueprint visualization | 10 inputs | 3D structure render with accurate depth and proportion |
Uploading more than 14 images triggers an error in the Gemini API, so keep inputs below the limit for smooth processing.
Where Can You Use Multi-Image Generation
Nano Banana Pro’s multi-image upload is available across different Google ecosystem products:
- Gemini App – Simplified version for casual creation (3-image limit)
- Google AI Studio – Full developer preview (up to 14 images)
- Vertex AI – Enterprise workflow integration for large-scale generation
- Flow (Google Ultra) – Professional cinematic tool for filmmakers and marketers
- GlobalGPT Platform – Integrated access for users worldwide without Gemini server congestion
GlobalGPT offers the same multi-image capacity (14 inputs, 5 character lock) under free and unrestricted conditions.
Tips for Best Results
- Keep image references related in style or lighting
- Use clear prompts to define each image’s role (e.g., background, subject, object)
- Start with fewer images (3–5) to observe composition balance
- Avoid duplicates or low-resolution inputs to prevent blending artifacts
- For 4K outputs, use Gemini Pro or Ultra subscription, or GlobalGPT integration
Creators on Reddit report that Nano Banana Pro handles multi-image inputs better than previous models like Midjourney or Firefly, especially in keeping faces and textures stable.
Why This Feature Matters in Real-World Design
Combining multiple visual references unlocks endless creative possibilities:
- Product photography re-imagined with real-world textures
- Film storyboards using live character continuity
- Infographics and data visualization with consistent design logic
- Architectural mockups and 3D visualization
- Fashion and branding campaigns with uniform aesthetic
Nano Banana Pro bridges the gap between concept and execution—you no longer have to merge images manually.
Final Verdict — The Power of 14
You can upload up to 14 images at once and keep up to five characters fully consistent in Nano Banana Pro. With 4K resolution, multi-image intelligence, and creative controls built into Gemini 3 Pro Image, you can design entire campaigns or storyboards in a single generation.
Whether you’re a designer, developer, or marketer, Nano Banana Pro’s multi-image engine turns complex ideas into cohesive visual results—making 14 the magic number of creativity in 2025.
