Nano Banana works best when image generation is treated as a repeatable workflow, not a one-shot surprise. Use it to explore a concept, tighten a reference image, compare styles, and keep useful prompt language close to the generator.
The core choice is simple: use text-to-image when you need a fresh visual from a written idea, and image-to-image when a face, product, layout, or mood should stay recognizable. The sections below help you choose the right workflow before spending credits on a final image.