Nano Banana 2.1: Google's Half-Price 4K Image Model Becomes the New Default
Google quietly rolled out Nano Banana 2.1, its newest image generation and editing model built on Gemini 3.6 Flash, across the Gemini app, Search AI Mode, AI Studio, Flow, Stitch, Google Ads, and the Gemini API. The API model ID is gemini-nano-banana-2.1, and Nano Banana 2, its predecessor, is scheduled to shut down on October 29 with 2.1 as the designated replacement. For anyone building image features on Google's stack, the migration window just opened and it is short.