Nano Banana 2.1

Nano Banana 2.1 by Google generates images from text prompts, with output resolutions up to 4K, adjustable aspect ratios, and optional web search grounding.

Inference$ Commercial useFrom 2 credits per run

About Nano Banana 2.1

Nano Banana 2.1 by Google generates images from text prompts, with output resolutions up to 4K, adjustable aspect ratios, and optional web search grounding.

image generationphotorealismtypographytext rendering

Pricing

A run with the default settings costs 2 credits. The exact cost updates in the playground as you change settings, and you're only charged when you press Run. Failed runs are refunded automatically.

Inputs

prompttextarearequired

The text prompt to generate an image from.

num_imagesintegerdefault: 1

The number of images to generate.

seedinteger

The seed for the random number generator.

aspect_ratioselectdefault: "auto"

The aspect ratio of the generated image. Supports extreme ratios: 4:1, 1:4, 8:1, 1:8. Use "auto" to let the model decide based on the prompt.

Options: auto, 21:9, 16:9, 3:2, 4:3, 5:4, 1:1, 4:5, 3:4, 2:3, 9:16, 4:1, 1:4, 8:1, 1:8

output_formatselectdefault: "png"

The format of the generated image.

Options: jpeg, png, webp

safety_toleranceselectdefault: "4"

The safety tolerance level for content moderation. 1 is the most strict (blocks most content), 6 is the least strict.

Options: 1, 2, 3, 4, 5, 6

sync_modebooleandefault: false

If `True`, the media will be returned as a data URI and the output data won't be available in the request history.

system_prompttextareadefault: ""

Optional system instruction that steers the model's persona and output style across the request. Leave blank to omit; when provided, it is sent as the system instruction to Gemini (or as a system message on OpenAI-compatible providers).

resolutionselectdefault: "1K"

The resolution of the image to generate.

Options: 1K

limit_generationsbooleandefault: true

Experimental parameter to limit the number of generations from each round of prompting to 1. Set to `True` to to disregard any instructions in the prompt regarding the number of images to generate and ignore any intermediate images generated by the model. This may affect generation quality.

enable_web_searchbooleandefault: false

Enable web search for the image generation task. This will allow the model to use the latest information from the web to generate the image.

thinking_levelselectdefault: "medium"

How much the model reasons before generating. Higher levels can improve complex compositions and use more thinking tokens.

Options: minimal, medium, high

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