Image
Nano Banana 2
Google's Flash-speed image model — pro-level quality at iteration speed, with flexible ratios and deep world knowledge.
About this model
Nano Banana 2 (Gemini 3.1 Flash Image) brings Gemini Flash latency to visual generation while keeping Pro-grade features like Search grounding, subject consistency, and 4K output. Google positions it as the default image model for rapid iteration — storyboards, social concepts, infographics, and reference-guided edits — with up to 14 objects and 5 characters maintained across a workflow. On HiArt it is the go-to when you need many variants quickly before committing credits to a final render.
Best for
- Flash-speed generation for rapid canvas iteration
- 15 aspect ratios including tall social formats (1:4, 1:8, 8:1)
- Up to 14 reference images with subject and object consistency
- Real-world knowledge and Search grounding for accurate subjects
- Resolutions from 512px through 4K
- Strong instruction following for complex multi-part prompts
Common workflows
- Storyboards and sequential narrative frames
- Social media concepts across vertical, square, and widescreen formats
- Infographics, diagrams, and note-to-visual conversions
- Character exploration before locking a design direction
- Quick style tests alongside Agent workflows on the canvas
How to use on HiArt
- 01Add an image node and select Nano Banana 2.
- 02Attach reference images for characters, products, or style anchors.
- 03Use detailed prompts — Nano Banana 2 responds well to specific scene structure.
- 04Iterate quickly at 1K or 2K, then upscale to 4K for the selected composition.
Capabilities
- Provider
- Google DeepMind (Gemini)
- Model ID
- gemini-3.1-flash-image-preview
- Aspect ratios
- 15 presets including 1:4, 4:1, 8:1, 21:9
- Resolution
- 512px, 1K, 2K, 4K
- Reference images
- Up to 14
- Typical generation time
- ~30 seconds
Learn more
- Nano Banana 2 — Google Blog
Google's launch post covering speed, Search grounding, and subject consistency.
- Gemini Image — Google DeepMind
Model family overview for Nano Banana 2 and Nano Banana Pro.
- Gemini 3.1 Flash Image documentation
Technical specs including supported ratios, resolutions, and input limits.
FAQ
- What is the difference between Nano Banana 2 and Nano Banana Pro?
- Nano Banana 2 optimizes for speed and iteration volume. Nano Banana Pro targets studio-quality precision, finer text rendering, and the hardest composite layouts. Start with 2; move to Pro for final deliverables.
- Why is it called Nano Banana?
- Nano Banana is Google's consumer-facing name for the Gemini image model family. Nano Banana 2 maps to Gemini 3.1 Flash Image in the API.
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