Nana Banana is a web-first AI image generation and editing tool that uses natural language understanding to apply complex edits or generate images from text. Users can upload up to five reference images, choose styles, and run one-shot edits that preserve scenes and character consistency. Features include multi-image context, smart background replacement, advanced object editing, style transfer, HD upscaling, and commercial usage options. It operates on a credit-based pricing model with daily free credits and Pro plans for higher throughput and resolution.