new model
Nano Banana 2.1 image model is generally available
Google's gemini-nano-banana-2.1 (GA since 6 Oct 2026) improves text rendering and adds panoramic aspect ratios. Standard API price is $0.0336 per 1K image, $0.0504 per 2K and $0.113 per 4K; batch is half. The older gemini-3.1-flash-image is deprecated.
Source