What Is Nano Banana Pro? Gemini 3 Pro Image Explained

Nano Banana Pro is the nickname for Gemini 3 Pro Image, Google’s highest-quality image generation and editing model. Google released it in November 2025 as the “Pro” tier of the Nano Banana family. Where the Flash models (Nano Banana, Nano Banana 2) aim for speed, Pro plans each image before drawing it, which makes it slower and more expensive but noticeably better at text, complex layouts and fine detail.

What Nano Banana Pro does better

• Text. Posters, menus, infographics and labelled diagrams with several lines of copy, in many languages.
• Complex prompts. Many subjects, exact positions and long instructions, because the model reasons about the layout first.
• Resolution. Native output at 1K, 2K and 4K.
• References. According to Google’s documentation it accepts up to 6 object images, up to 5 character images and up to 3 style images in one request, which helps with brand work and consistent characters.
• Grounding. Through the API it can use Google Search grounding to draw on current information, for example for an infographic about recent data.

Nano Banana Pro vs the other Nano Banana models

Nano Banana 2 is newer (February 2026) but is a lighter model; Pro is older but heavier. See Nano Banana 2 vs Nano Banana Pro for a side-by-side test.

When was Nano Banana Pro released?

Google announced Nano Banana Pro in November 2025 as a preview, and its API model gemini-3-pro-image later became generally available. It sits alongside the Flash models rather than replacing them. Google has not announced a successor; see Nano Banana 3: what we know.

How much does Nano Banana Pro cost?

On Google’s Gemini API it lists at $0.134 per image at 1K or 2K and $0.24 at 4K. In the Gemini app, redoing an image with Pro is part of the paid Google AI plans. On Nano Banana AI it costs 90 credits per image at 1K or 2K and 120 at 4K on the Pro plan. Free options are covered in Nano Banana Pro free.

Where can you use it?

The Gemini app (paid plans), Google AI Studio and Vertex AI, Google Workspace and NotebookLM, Photoshop’s Generative Fill, and studios such as Nano Banana AI. The step-by-step guide is How to use Nano Banana Pro, and ready-made prompts are on Nano Banana Pro prompts. Every option is compared on access and price in Where to use Nano Banana.