Nano Banana (Gemini 2.5 Flash Image) is an image generation and editing model launched by Google, including the Nano Banana model and the Nano Banana Pro (Gemini 3 Pro Image) model. Nano Banana, based on the Gemini 2.5 Flash Image architecture, is known for generating fun 3D doll-style images suitable for quick creative editing. Nano Banana Pro, based on a more advanced Gemini 3 Pro architecture.