Introduction
A practical guide to using the Nano Banana 2 image model in our Media Generator: options, costs per resolution, prompt tips, and best practices.
Nano Banana 2 is a fast image generation model powered by Google's Gemini 3.1 Flash. In our platform, it excels at:
- Text accuracy — Strong rendering of text and fine details
- Reference blending — Up to 14 reference images per generation
- Multiple aspect ratios — Including ultrawide 21:9
- Resolution choice — 1K, 2K, or 4K output
Use it when you need sharp text, product shots with many reference images, or higher-resolution outputs.
Where to Use Nano Banana 2
| Location | How | |----------|-----| | Media Generator | Tools → Media Generator → Create Job → choose "Nano Banana 2" in the model dropdown | | Image projects | Create a project, add prompts, and select Nano Banana 2 as the model |
Platform Options
Resolution (credit cost varies)
| Resolution | Credits per image | Best for | |------------|-------------------|----------| | 1K | 0.28 | Quick previews, thumbnails, social media | | 2K | 0.32 | General use, web and print | | 4K | 0.40 | High-resolution prints, large displays |
Default:
- 2K
Aspect ratio
| Option | Label | Use case | |--------|-------|----------| | 1:1 | Square | Icons, thumbnails, social grid | | 2:3 | Portrait | Print, cards | | 3:2 | Landscape | Classic photo | | 3:4 | Portrait | Photo, cards | | 4:3 | Standard | Screens, standard crop | | 4:5 | Portrait | Instagram-style | | 5:4 | Landscape | Wide product | | 9:16 | Portrait | Stories, mobile | | 16:9 | Landscape | Banners, headers | | 21:9 | Ultrawide | Cinematic, banners |
Default:
- 1:1
Output format
- PNG — Lossless
- JPG — Smaller file size
Default:
- JPG
Reference images
- Optional for text-to-image
- Up to 14 reference images for style or product consistency
- One of the highest reference limits among our image models
Costs (credits)
Nano Banana 2 uses resolution-based pricing:
| Resolution | USD | Credits | |------------|-----|----------| | 1K | $0.112 | 0.28 | | 2K | $0.128 | 0.32 | | 4K | $0.160 | 0.40 |
\Credits computed with default billing config. Check the model selector in the UI for current rates.
Prompt guidelines
Do
- Be specific about text, layout, and style
- Mention lighting and composition
- Use reference images when you need consistency across outputs
- Combine multiple references for complex scenes
Avoid
- Very long or vague prompts
- Conflicting instructions
Good practices
- Choose the right resolution — Use 1K for previews, 4K when you need print or large display quality.
- Use reference images — Up to 14 images can guide style and product consistency.
- Pick the right aspect ratio — 21:9 for banners, 9:16 for stories, 1:1 for grids.
- Batch when possible — Up to 5 images per generation for efficiency.
Limits and constraints
| Constraint | Value | |------------|-------| | Reference images | Up to 14 per generation | | Max images per request | 5 | | Resolutions | 1K, 2K, 4K |
Troubleshooting
| Issue | What to try | |-------|-------------| | Text not rendering well | Add explicit text instructions; ensure prompt is clear | | Inconsistent style | Add more reference images | | High credit use | Switch to 1K or 2K instead of 4K | | Model not available | Confirm Replicate API token is configured |