Nano Banana Pro (Gemini 3 Pro Image)
Nano Banana Pro (Gemini 3 Pro Image) (Nano Banana Pro) is Google's advanced native image generation model built for professional and creative workflows, with accurate diagram labeling, web-search-grounded imagery, and higher resolution output.
import { generateText } from 'ai'
const result = await generateText({ model: 'google/gemini-3-pro-image', prompt: 'Render a picture of a red balloon.',});Playground
Try out Nano Banana Pro (Gemini 3 Pro Image) by Google. Usage is billed to your team at API rates. Free users (those who haven't made a payment) get $5 of credits every 30 days.
Providers
Route requests across multiple providers. Copy a provider slug to set your preference. Visit the docs for more info. Using a provider means you agree to their terms, listed under Legal.
P50 throughput on live AI Gateway traffic, in tokens per second (TPS). Visit the docs for more info.
P50 time to first token (TTFT) on live AI Gateway traffic, in milliseconds. View the docs for more info.
Direct request success rate on AI Gateway and per-provider. Visit the docs for more info.
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| 1M | 2.3s | 219tps | $1.50/M | $9.00/M | Read:$0.15/M Write:— | $14.00/K + input costs | — |   | 05/19/2026 | ||||
| 1M | 0.8s | 244tps | $0.25/M | $1.50/M | Read:$0.03/M Write:— | $14.00/K + input costs | — | | 03/03/2026 | ||||
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| 1M | 0.8s | 194tps | $0.50/M | $3.00/M | Read: $0.05/M Write: — | $14.00/K + input costs | — | | 12/17/2025 | ||||
| 1M | 0.5s | 236tps | $0.10/M | $0.40/M | Read:$0.01/M Write:— | $35.00/K + input costs | — | | 06/17/2025 | ||||
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About Nano Banana Pro (Gemini 3 Pro Image)
Nano Banana Pro (Gemini 3 Pro Image) (internally codenamed Nano Banana Pro) is Google's image generation model for professional and creative use cases that demand more than basic image synthesis. It has three headline capabilities: accurate label generation in diagrams and charts, integration of Google web search to ground images in up-to-date real-world information, and higher resolution output with higher multi-image input limits for complex compositing.
The diagram and labeling capability is particularly significant for technical teams. Generating an architectural diagram, data pipeline schematic, or annotated system map with accurate text labels has historically been a weak point for image models. Nano Banana Pro (Gemini 3 Pro Image) handles these workflows directly.
Unlike dedicated image generation APIs, Nano Banana Pro (Gemini 3 Pro Image) is a multimodal model that outputs both text and images through generateText. A single request can return a written description, a diagram, and explanatory annotations together. This makes it suitable for documentation generation, creative briefing, and technical illustration workflows where you need mixed-media output.
What To Consider When Choosing a Provider
- Configuration: Because this is a multimodal model that uses
generateText(notgenerateImage) for image output, ensure your integration handles bothresult.textandresult.filesin the response when processing generated images. - Zero Data Retention: AI Gateway supports Zero Data Retention for this model via direct gateway requests (BYOK is not included). To configure this, check the documentation.
- Authentication: AI Gateway authenticates requests using an API key or OIDC token. You do not need to manage provider credentials directly.
When to Use Nano Banana Pro (Gemini 3 Pro Image)
Best For
- Labeled technical diagrams: Generating architecture charts and data flow visualizations with accurate labeling
- High-resolution creative workflows: Requiring higher resolution images and multi-image compositing
- Web-search-grounded imagery: Applications that need image generation grounded in current real-world information via web search
- Mixed-media pipelines: A single request should return both explanatory text and accompanying images
- Professional design and documentation: Workflows where image quality must match that of prior-generation flagship models
Consider Alternatives When
- Pure image generation: You need images without text output (consider
google/imagen-4.0-generate-001orgoogle/imagen-4.0-ultra-generate-001) - Language-only reasoning: Your use case has no image generation requirement (consider
google/gemini-3-pro-preview) - Flash-tier speed and cost: Generation speed matters more than pro-level quality (consider
google/gemini-3.1-flash-image-preview) - Video output required: Still images are not sufficient (consider the Veo model family)
Conclusion
Nano Banana Pro (Gemini 3 Pro Image) fills a gap in AI-assisted technical documentation and professional creative production. It generates accurately labeled diagrams and web-search-grounded imagery at higher resolutions. For teams building tools that produce technical illustrations, enriched visual content, or composite image workflows, it exposes capabilities that simpler image-generation models do not.
Frequently Asked Questions
Why does this model use
generateTextinstead ofgenerateImage?Nano Banana Pro (Gemini 3 Pro Image) is a multimodal model, not a dedicated image generation API. It returns both text and image files in a single response. In the AI SDK, you call
generateTextand then iterate overresult.filesto access the generated images.What types of diagrams can this model generate with accurate labels?
The model handles architectural schematics, data flow charts, and similar technical visualizations where text annotations must be precisely placed and readable.
How does web search integration work for image generation?
The model can query Google's index at generation time to retrieve current visual reference data. This helps render lesser-known landmarks, recent events, or real-world objects accurately rather than relying solely on training data.
What resolution does Nano Banana Pro (Gemini 3 Pro Image) support?
Nano Banana Pro (Gemini 3 Pro Image) generates higher resolution images compared to the base Nano Banana model. Check the model specs on this page for current resolution and pricing details.
Can I use this model with multiple input images for compositing?
Yes. Nano Banana Pro (Gemini 3 Pro Image) introduces higher multi-image input limits specifically to support compositing workflows where multiple reference images must be combined into a single generated output.
Do I need a Google account to use this model on AI Gateway?
No. AI Gateway manages all provider credentials. You authenticate via a Vercel API key or OIDC token and AI Gateway routes requests to the appropriate provider automatically.
How is Nano Banana Pro (Gemini 3 Pro Image) different from the base Nano Banana model?
Nano Banana Pro (Gemini 3 Pro Image) targets advanced and professional use cases. It adds diagram labeling accuracy, web-search grounding for up-to-date imagery, higher resolution output, and higher multi-image input limits. These capabilities are not available in the base flash-tier image model.
Can I receive both text and image output in the same request?
Yes. Because this is a multimodal model using
generateText, a single request returnsresult.textfor any written content andresult.filescontaining the generated images, allowing mixed-media responses in one API call.