Cheaper Gen.
GooglePrompt guide

Nano Banana 2.1 Prompt Guide

How to write Nano Banana 2.1 prompts: a structure that works, 6 example prompts for text to image and image edit, the settings that change the result and how to reference your own media. Copy any prompt into the Studio to try it.

Example prompts
6
2 tasks
Size
4K
1K · 2K · 4K
Aspect ratios
14
1:1 · 2:3 · 3:2 · 3:4
Per try from
$0.022/image
1K
Try in Studio Call the API

Structure

A Nano Banana 2.1 prompt, piece by piece

Write in this order and keep each part concrete. Physical detail works better than mood words.

  1. 01

    Subject

    The main subject and its key details: material, colour, expression, product features.

  2. 02

    Composition

    Framing and angle: close-up, flat lay, three-quarter view, rule of thirds, negative space.

  3. 03

    Setting and light

    Background, environment and lighting: studio softbox, golden hour, neon.

  4. 04

    Style

    Photo, illustration, 3D render or painting — plus lens or medium details.

  5. 05

    Edit instruction

    For edits, say what to change and what must stay the same: “replace the background, keep the product and its shadow”.

Examples

Nano Banana 2.1 prompt examples

Prompts written for this model, grouped by task. Open one in the Studio, then change one part at a time.

  • Text to Image4:3
    A hand-lettered chalkboard café menu with five drinks and prices, warm photo
    Try in Studio
  • Image Edit1:1
    Turn this sketch into a glossy 3D-rendered toy figure on a pastel background
    Try in Studio
  • Text to Image4:1
    Ultra-wide panoramic banner of a misty fjord at sunrise, tiny red cabin on the shore
    Try in Studio
  • Image Edit3:4
    Make the person in image 1 wear the jacket from image 2, same pose and lighting
    Try in Studio
  • Text to Image
    A cozy ramen shop at night in the rain, warm light spilling onto wet pavement, a neon sign that reads “OPEN”, photorealistic
    Try in Studio
  • Image Edit
    Put the product from image 1 on the marble counter in image 2, matching the soft morning light
    Try in Studio

By task

Prompting each Nano Banana 2.1 task

Text to Image

Lead with the subject, then composition, setting, light and style. Quote any text that must appear in the image.

Image Edit

Describe the change, not the whole image. Name what must stay untouched so the model keeps it.

Referencing your own media

Nano Banana 2.1 reference inputs and how to mention them
InputIn the promptLimits and rules
Input images
Image Edit · up to 14
see descriptionUp to 14 images to edit or combine — products, people, styles. Refer to them as "image 1", "image 2"… in the prompt.

Settings

Settings that change the result

Set these next to the prompt — in the Studio or as API parameters.

Nano Banana 2.1 generation settings
SettingOptionsEffect
Aspect ratio
aspect_ratio
1:1 · 2:3 · 3:2 · 3:4 · 4:3 · 4:5 · 5:4 · 9:16 · 16:9 · 21:9 · 1:4 · 4:1 · 1:8 · 8:1
default 1:1
Output image shape.
Resolution
resolution
1K · 2K · 4K
default 1K
Output size: 1K ≈ 1 megapixel, 2K ≈ 4 MP, 4K ≈ 16 MP.
Price: 1K $0.022/image · 2K $0.033/image · 4K $0.0495/image

FAQ

Nano Banana 2.1 prompting questions

There is no separate negative prompt for Nano Banana 2.1. Say what you want instead of what you don't, and keep unwanted elements out of the description.

Image Edit: Up to 14 images to edit or combine — products, people, styles. Refer to them as "image 1", "image 2"… in the prompt.

Nano Banana 2.1 has no seed parameter, so results vary between runs. Generate a few variations and keep the best.

Open Nano Banana 2.1 in the Studio and paste any prompt from this page. Each run shows its exact price before you generate, and failed generations are refunded.