Google releases Gemini Nano Banana 2.1 for general availability

Google has made Gemini Nano Banana 2.1, identified as gemini-nano-banana-2.1, generally available as an image generation and conversational editing model.

It improves visual quality, prompt adherence, multi-turn character consistency, and text rendering, and adds panoramic aspect ratios such as 1:4, 4:1, 1:8, and 8:1 at 1K, 2K, and 4K resolutions.

The gemini-3.1-flash-image model is deprecated with no shutdown date announced, and developers are told to migrate to the new model.