Nano Banana Pro: a review plan for more demanding image briefs

The release

Google introduced Gemini 3 Pro Image Preview, also called Nano Banana Pro, on November 20, 2025.

Define a demanding brief concretely

A complex brief is not simply a longer prompt. It may require several objects in specific positions, a headline with exact wording, and a composition that leaves space for a legal line. Turn each requirement into an independent review item.

Use a small set of briefs from the work your team actually publishes. Include the cases that required manual corrections in the previous workflow. That gives a new model a meaningful problem to solve.

Review at the delivery size

A headline can look plausible in a thumbnail and still contain a wrong character. Inspect text and important product details at the size the audience will see. For assets that will be cropped, review every required crop rather than only the original canvas.

The fashion concept below illustrates a layout brief, not a claim about output from Nano Banana Pro. Model comparisons should use documented requests and a consistent review process.

Set a promotion rule

Before a pilot, agree which improvement would justify changing your default: fewer corrections, more accepted candidates, or a shorter review loop. Include cost and request completion behavior in that decision. A release label alone is not an acceptance test.