Google's fastest image tier — a 1K draft in about three seconds, from 4 credits per image.



Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image) is the speed tier of Google's image family. Where 2.1 optimises for product fidelity and Pro for maximum detail, Lite optimises for one thing: getting a usable 1K frame back fast. In our own measurements it returns in roughly three seconds, against about eleven for 2.1.
It is still a full image model — text-to-image from a prompt, image-to-image with up to 14 references, 14 aspect ratios — but output is fixed at 1K. That is the trade: less resolution, far less waiting. For exploring ten directions before committing to one, that is usually the right trade.
Most projects waste money on the first ten images. You are not looking for the final frame — you are looking for the right direction, and each attempt is likely to be thrown away. Lite is the tier for that phase: 4 credits and three seconds means a dozen explorations cost less than two Pro renders and take about half a minute.
When a direction survives, move it up: re-run the same prompt on 2.1 for 1K–4K fidelity, or on Pro when the frame has to carry fine text and material detail. The prompt is portable, so nothing is lost by starting cheap.
Average time for one 1K frame in our test runs
Credits per image, the lowest price here
Aspect ratios available at 1K
What people ask about Nano Banana 2 Lite.
Four credits and about three seconds per direction — explore first, commit later.