According to @GeminiApp, Google has introduced Nano Banana Pro alongside a major update for Gemini users, enabling them to verify if an image was generated or edited by Google AI through SynthID, their proprietary digital watermarking technology (source: GeminiApp on Twitter, Nov 20, 2025). With this update, users can upload any image to the Gemini app and ask if it is AI-generated. The system scans for SynthID watermarks, which are embedded in all Google AI-generated images, including those created with Nano Banana Pro. This development underscores Google’s commitment to AI transparency and provides businesses with robust tools for digital content verification, addressing growing demands for authenticity in AI-generated media (source: goo.gle/synthid).