What is Nano Banana 2.1?
Nano Banana 2.1 is Google’s image generation and conversational editing model, identified in the Gemini API as gemini-nano-banana-2.1. It creates images from written descriptions and visual references, and supports iterative edits. Its focus includes visual quality, instruction following, text rendering and subject consistency.
What is new in Nano Banana 2.1?
The update improves realism, instruction following, text rendering and character consistency during repeated edits. Google also reports better infographic layouts and fixes for tiling artifacts in panoramic images at 2K and 4K. These changes help with detailed compositions, text-heavy graphics and wider formats.
How does Nano Banana 2.1 handle multi-turn image editing?
You can refine an image through a conversation, asking for changes to lighting, backgrounds or visual style over successive turns. The model improves character consistency across these revisions. Review small labels, faces and product details after each edit, since preservation is not guaranteed.
How many reference images does Nano Banana 2.1 support?
Google documents support for up to 14 reference images, including consistency capabilities for up to four characters and fidelity for up to ten objects. These are model-level capabilities, not guarantees of an exact match. The number of uploads available in an application depends on its implementation.
Does Nano Banana 2.1 support 4K images?
The model supports 1K, 2K and 4K image output. Google’s Gemini API defaults to 1K; an application may expose different options or defaults. Check the selected settings and exported file dimensions rather than assuming every generation is 4K.
Can it create readable text and infographics?
Nano Banana 2.1 includes improvements to text rendering and infographic layout. Give it the exact text, the intended reading order and a clear layout direction. Always proofread the result and verify any figures or factual claims before sharing it.
Can it keep the same character or product across images?
Reference images and clear preservation instructions can help maintain a recognizable subject across related images and edits. Consistency is not pixel-perfect: small labels, accessories, facial features or product details may change. Compare the result with the source reference before approval.
What improves in wide and panoramic images?
Nano Banana 2.1 addresses tiling artifacts in extreme formats such as 4:1, 1:4, 8:1 and 1:8 at 2K and 4K. This supports long banners and tall compositions with fewer visible repetition artifacts. Available aspect-ratio controls depend on the application.