OpenRouter details Nano Banana 2.1 pricing and feature specifications

OpenRouter has outlined pricing and technical specifications for its [Nano Banana 2.1 deployment](https://openrouter.ai/google/gemini-nano-banana-2.1). Image generation rates are set at $0.0336 per image for 1K resolution, $0.0504 for 2K resolution, and $0.1134 for 4K resolution.

The model deployment supports up to 14 reference images, grounding with Google Search, and cleaner panoramas in 1:4, 4:1, 1:8, and 8:1 aspect ratios at 2K and 4K resolutions.