Gemini Nano Banana 2.1 generally available, with 1K, 2K and 4K image output

Gemini Nano Banana 2.1

Gemini Nano Banana 2.1 (gemini-nano-banana-2.1) is available in General Availability (GA). Gemini Nano Banana 2.1 is optimized for high-speed multimodal image generation and editing, offering improved visual quality, prompt adherence, and text rendering across 1K, 2K, and 4K output resolutions.