Google announced that its Gemini Nano Banana 2.1 model is now generally available. The model is billed as a high‑efficiency image generator that keeps the speed and low cost of the previous Flash‑level models but improves visual quality, prompt adherence, multi‑turn character consistency, text rendering, and support for very wide or tall aspect ratios. It can create images up to 4K resolution in formats such as 1:4, 4:1, 1:8, and 8:1.
What’s changing for existing users?
Google is deprecating the older gemini-3.1-flash-image model. The service will be turned off on October 29, 2026, so developers need to switch their code to use gemini-nano-banana-2.1 before then. The changelog points users to the Image generation guide for migration steps.
Why it matters
For developers who embed image generation in apps, the new model offers better quality without higher costs, letting them create richer visuals. They must update their integration before Oct. 29, 2026, or their existing image calls will stop working. The impact on end users will be smoother, higher‑quality images in the products they use.
