The Interactions API is now generally available. We recommend using this API for access to all the latest features and models. Home Gemini API Docs Send feedback Gemini 3.1 Flash Lite Image Nano Banana 2 Lite is designed as the efficiency specialist of the image generation family, offering ultra-low latency and cost-effective image generation and editing. By targeting a sub-2 second latency and significantly reduced TPU compute costs, this model enables high-volume interactive developer use cases and real-time consumer applications. Key capabilities: Sub-2 second end-to-end latency Interleaved generation and editing with native support for Text -> Text + Image(s) and Image + Text -> Text + Image(s). Optimized for lower resolutions of 1K (1024x1024px). Supports a discrete set of 14 aspect ratios including standard formats. Fast multi-turn local edits (swapping colors, sticker creation, background adjustments). Maintains high character alignment matching original Nano Banana standards. New 1:1 , 3:2 , 2:3 , 3:4 , 4:3 , 4:5 , 5:4 , 9:16 , 16:9 , 21:9 aspect ratios. Supported image_size values: 1024px (1K). (Note: 2K and 4K are unsupported). SynthID watermarking (Always On) + C2PA .