Nano Banana is an AI-driven image platform that brings Gemini image models to a simple web interface. It supports natural-language photo editing (remove, replace, restyle), text-to-image generation, multi-image fusion, and smart object replacement while preserving character identity across edits. Outputs are available up to 4K resolution, watermark-free and licensed for commercial use. The service offers tiered credit-based plans including a free daily-credit option and priority queues for paid users.