6 Best Nano Banana 2 Prompts in 2026: How to Generate Smarter AI Images

Last summer, Nano Banana went viral. In November, the Pro version raised the bar for quality. Now Google is trying to merge both worlds.

Nano Banana 2, officially Gemini 3.1 Flash Image, promises Pro-level intelligence at Flash-level speed. It adds real-world knowledge, cleaner text rendering, stronger character consistency, and production-ready 4K output. Instead of listing specs, we tested it the practical way: with prompts designed to push its speed, reasoning, layout control, and multilingual capabilities.