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Nano Banana is the first image model family documented for the YingTu unified task flow. Use it for prompt-based generation and image-guided editing.
The public model ID is part of the request contract. Do not invent aliases in client code; select an ID from the verified model catalog.

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Typical workflow

Choose parameters

Set the prompt, aspect ratio, and supported output resolution.

Copy an example

Start from cURL, Python, or Node.js.
The examples use gemini-3.1-flash-image as the model ID and the common task envelope.