Nano Banana 2 Edit: Prompt-Driven Image Editing with Multi-Image Inputs, Resolution & Safety Controls

google/nano-banana-2/edit

Edit one or more images with Nano Banana 2 Edit using text prompts, with controllable aspect ratio, resolution, safety tolerance, output format, and generation limits.

Prompt *

The prompt for image editing.

Images *

The URLs of the images to use for image-to-image generation or image editing.

Number of Images

The number of images to generate.

Seed

The seed for the random number generator.

Aspect Ratio (W:H)

The aspect ratio of the generated image.

Resolution

The resolution of the image to generate.

Output Format

The format of the generated image.

Safety Tolerance

The safety tolerance level for content moderation. 1 is the most strict and 6 is the least strict.

Limit Generations

If true, limits each round of prompting to one generation.

Enable Web Search

Enable web search for latest information in generation.

Idle

The rate is $0.08 per image. 2K and 4K outputs will be charged at 1.5 times and 2 times the standard rate, respectively. 0.5K outputs will be charged at 0.75 times the standard rate. If web search is used, an additional $0.015 will be charged.

Introduction to Nano Banana 2 Edit

Nano Banana 2 Edit is a prompt-driven image editing model that takes one or more input images and applies targeted changes while keeping the overall composition coherent. It’s designed for fast iteration and practical control: choose aspect ratio and resolution, tune safety tolerance, set output format, and optionally restrict multi-round generations for tighter creative loops.

Ideal for: background swaps | style transfer | product photo cleanup | multi-image variations | rapid creative edits

Examples of Nano Banana 2 Edit

What Nano Banana 2 Edit does

Nano Banana 2 Edit takes a text prompt plus 1–20 input images (image_urls) and generates 1–4 edited outputs. It’s well-suited for making specific changes while preserving the core subject.

Key controls

image_urls: Provide 1–20 source images to edit or to guide variations.
aspect_ratio: Set framing (or keep auto to follow the input).
resolution: Choose 0.5K–4K for the generated output.
safety_tolerance: Adjust moderation strictness (lower is stricter).
output_format: Export as png, jpeg, or webp.
limit_generations: If true, restrict each round of prompting to one generation.
enable_web_search: Optional grounding via web search for fresher details.

Prompting tips

Start with constraints: what must remain unchanged (e.g., “keep face and pose”).
Localize edits: “background only”, “remove object on the left”, “change shirt color only”.
For consistency across a set, keep aspect_ratio and resolution fixed.
If edits drift, reduce scope and iterate in multiple short prompts instead of one long prompt.

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Frequently Asked Questions

What’s the difference between Nano Banana 2 Edit and Nano Banana 2 text-to-image?

Nano Banana 2 text-to-image generates images from a text prompt only. Nano Banana 2 Edit takes one or more input images plus a prompt, then applies edits or guided variations while aiming to preserve important visual structure.

How many input images can I provide to Nano Banana 2 Edit?

Nano Banana 2 Edit accepts 1–20 input images via image_urls. You can use a single source image for straightforward edits, or multiple images to guide variations and consistency.

What does aspect_ratio = auto mean in Nano Banana 2 Edit?

With aspect_ratio set to auto, the model will typically follow the framing implied by your input image(s). If you need a fixed layout (e.g., 16:9 or 9:16), choose an explicit aspect ratio to reduce cropping surprises.

What resolution options are supported?

Nano Banana 2 Edit supports resolution choices from 0.5K up to 4K. Higher resolutions can produce sharper details but may take longer to generate.

When should I enable web search?

Enable enable_web_search when your edit needs up-to-date visual details, current events, or specific references that benefit from grounding. For purely stylistic edits (background swap, color change, cleanup), keeping it off can be faster and more deterministic.

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Nano Banana 2 Edit: Prompt-Driven Image Editing with Multi-Image Inputs, Resolution & Safety Controls | RunComfy