# Nano Banana 2

Google's Nano Banana 2: the fast all-rounder, from 512px drafts to 4K.

Last updated: 2026-10-05

**Key facts**

- Nano Banana 2 is Google's general-purpose image model (Gemini 3.1 Flash Image), offered in Sloosh as a fast all-rounder for exploring ideas and large batches.
- Nano Banana 2 makes images at 512px, 1K, 2K or 4K in Sloosh; it is the only Nano Banana with a 512px option.
- Nano Banana 2 takes up to 14 reference images in Sloosh Studio and prompts up to 50,000 characters.
- Nano Banana 2 offers 11 aspect ratio settings in Sloosh: Auto, 1:1, 2:3, 3:2, 16:9, 9:16, 4:3, 3:4, 21:9, 4:5 and 5:4.

Web page: https://sloosh.ai/docs/nano-banana-2

Nano Banana 2 is Google's general-purpose image model: quick, good with references, and able to output anything from a 512px draft to 4K. It's a good default for exploring ideas and for large batches.

## When to use it

- Exploring ideas quickly, then making the keeper at 2K or 4K.
- Putting a product from a reference into a new scene.
- For the best text and brand consistency, use [Nano Banana Pro](https://sloosh.ai/docs/nano-banana-pro.md).

## How to prompt it

- Start with a strong verb and describe the scene as a story, not a list of keywords.
- A useful formula: subject, action, location, composition, style.
- With references: name the reference, say how it relates, then the new scene, for example "Using the sneaker in image 1, show it ...".
- Say what must stay exactly the same.
- Describe what you want, not what you don't: "an empty street", not "no cars".

[Prompting Nano Banana](https://sloosh.ai/docs/prompting-nano-banana.md) has the full guide for all three Nano Banana models.

## Example

A plain product shot goes in; the prompt puts the sneaker on a runner in a street scene.

Input: product photo: ![A white mesh running sneaker with sage-green panels and a thick white sole, side view on light grey](https://sloosh.ai/docs/in-sneaker.webp)

->

Result: ![The sage-green sneaker on a runner's foot splashing through a wet neon-lit street at dusk](https://sloosh.ai/docs/m-nano-banana-2.webp)

_16:9, 2K, Enhance off._

**Prompt**

```text
Using the sneaker in image 1, show it mid-stride on a runner's foot on a wet city street at dusk. Neon shop signs reflect in the puddles, a little water splashes up from the sole. Low camera angle close to the ground, motion blur in the background, the sneaker sharp. Keep the sneaker's white mesh, sage-green panels and thick white sole exactly as in image 1.
```

## Settings in Sloosh

- Aspect ratio: Auto, 1:1, 2:3, 3:2, 16:9, 9:16, 4:3, 3:4, 21:9, 4:5 or 5:4.
- Resolution: 512px, 1K, 2K or 4K.
- References: up to 14 images.
- Prompt: up to 50,000 characters.

Open it in [Image](https://sloosh.ai/studio/image) and pick Nano Banana 2 in the model chip. The Generate button shows the cost first.

## Frequently asked questions

### What is Nano Banana 2 best for?

Nano Banana 2 is best for exploring ideas quickly and running large batches, then making the keeper at 2K or 4K. It is also good at putting a product from a reference photo into a new scene. For the best text and brand consistency, finish on [Nano Banana Pro](https://sloosh.ai/docs/nano-banana-pro.md).

### Nano Banana 2 vs Nano Banana Pro: which should I use?

Use Nano Banana 2 for speed and volume, and Nano Banana Pro for finished work with text or a brand look that must stay consistent. Both take the same prompts and up to 14 references in Sloosh, so find the idea on Nano Banana 2, then rerun the winning prompt on Pro.

### Does Nano Banana 2 make 4K images in Sloosh?

Yes. Nano Banana 2 offers 512px, 1K, 2K and 4K in the resolution chip, and 4K outputs need the Pro or Max plan. A useful habit is to test at 512px or 1K and only render the chosen prompt at 4K.

### How many reference images can Nano Banana 2 use in Sloosh?

Nano Banana 2 takes up to 14 reference images in Sloosh Studio. Name each one in the prompt and say how it relates to the new scene, for example "Using the sneaker in image 1, show it mid-stride on a runner's foot". Spacelab's Image Model node takes up to 10 references.

### Can Nano Banana 2 edit an existing photo?

Yes. Add the photo as a reference, describe the new scene, and say what must stay exactly the same, such as colours, logo or shape. For a small fix, ask Nano Banana 2 for one change only, then use the result as the next reference and repeat.

## Sources

- [Google Cloud: prompting guide for Nano Banana](https://cloud.google.com/blog/products/ai-machine-learning/ultimate-prompting-guide-for-nano-banana)
- [Gemini API: image generation](https://ai.google.dev/gemini-api/docs/image-generation)