gemini-nano-banana-2.1 · Vertex-Mid

Gemini Nano Banana 2.1 (gemini-nano-banana-2.1) is the latest high-efficiency image generation and conversational editing model. An update to Nano Banana 2 (Gemini 3.1 Flash Image), it maintains Flash-level speed and cost efficiency while delivering significant improvements in visual quality, prompt adherence, multi-turn character consistency, and text rendering. It serves as the more efficient counterpart to Gemini 3 Pro Image (Nano Banana Pro).