Nano Banana 2
⧉Nano Banana 2（Gemini 3.1 Flash Image）擅长封面、海报、插画与产品图，支持文生图与图生图两种模式，1K / 2K / 4K 多分辨率与多种比例，出图快、性价比高，OpenAI 图片接口兼容。
Live Test · Playground
Try out Nano Banana 2 right here (available after login)。
Input
ImageOutput
imageAbout Nano Banana 2
Nano Banana 2 is Google's new-generation Flash-tier image model (Gemini 3.1 Flash Image), built for fast, cost-effective generation of covers, posters, illustrations and product shots. On NezhaGate it is served through the OpenAI images API: point base_url at NezhaGate and set model to nano-banana-2 to generate with your existing SDK. It supports 1K / 2K / 4K resolutions and multiple aspect ratios, billed per use, and failed requests are not charged.
Use cases
Turn a one-line brief into consistent covers, social images and event posters, with fast generation and low iteration cost.
Generate clean-background product shots, promo posters and infographics in multiple aspect ratios for different placements.
Produce illustrations, icons and background assets in bulk, using fast generation to support high-volume creative needs.
How to choose
Choose Nano Banana 2 for speed and value on medium-complexity covers, posters and illustrations; choose Nano Banana Pro when you need stronger detail, in-image text layout and complex scenes.
FAQ
Does Nano Banana 2 support image-to-image?
Which resolutions and ratios are supported?
How do I call it with the OpenAI SDK?
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