Nano Banana Pro: features, specs and prompt examples

What is Nano Banana Pro

Nano Banana Pro is Google DeepMind’s model for generating and editing images, part of the Nano Banana family. Its official name is Gemini 3 Pro Image: it’s built on the Gemini 3 Pro language model and uses its reasoning and knowledge of the world. That’s why it understands long, multi-part prompts better than typical generators: “a poster with a schedule in three languages”, “a diagram of how an engine works”, “the same woman, but in different clothes and light”.

Before the final image, the model “thinks”. According to the Gemini API documentation, it creates up to two interim images to check the composition and logic of the scene, and you don’t pay for these drafts.

Google introduced the model on November 20, 2025 as the successor to Nano Banana (Gemini 2.5 Flash Image). Later came the fast Nano Banana 2 (Gemini 3.1 Flash Image), while Pro remained the option for the most complex tasks where details, text and following the brief precisely matter. The query “nano banana 2 pro” refers to this same Pro model: there’s no separate version with that name.

What Nano Banana Pro can do

• Photorealism. Skin, fabric, light and optics look like a photograph: the model understands photographers’ language — focal length, aperture, lighting type.
• Text in images. Headlines, captions, menus and paragraphs come out legible, including in different languages. The model can translate and localize lettering in a finished image.
• Up to 14 references. One generation can take up to 6 images of objects that must be transferred accurately and up to 5 photos of people to keep their likeness. A logo, palette, product and faces fit into one request.
• Targeted editing. You can change the camera angle, lighting (for example, day to night), color grading, focus and individual objects without touching the rest.
• Resolution up to 4K and ten aspect ratios — from square to wide 21:9.

What Nano Banana Pro is good for

Nano Banana Pro shines where accuracy matters more than speed:

• portraits and photo shoots with a recognizable face — for social media, profiles and personal branding;
• posters, covers, banners and layouts with readable text;
• infographics, diagrams, step-by-step guides and learning materials;
• product photography and marketplace visuals that keep a brand style;
• storyboards and concepts where one character moves from scene to scene.

For drafts and bulk generation, lighter models are faster and cheaper; Pro is worth bringing in for final versions.

Nano Banana Pro and its alternatives

Criterion	Nano Banana Pro	Nano Banana 2	GPT Image 2	Seedream 4.5
Developer	Google DeepMind	Google DeepMind	OpenAI	ByteDance
Released	Nov 20, 2025	Feb 26, 2026	April 2026	2025
Maximum resolution	4K	4K	3840 × 2160	4K in AI2Face
References	up to 14: 6 objects and 5 people	up to 14: 4 people and 10 objects	up to 16	up to 10 in AI2Face
Web search during generation	yes	yes, including images	no data	no data
Gemini API price per 1K	$0.134	$0.067	—	—
In AI2Face	yes	yes	yes	yes

Nano Banana Pro wins on complex layouts: lots of text, an exact brand style, several people and objects in one frame. Nano Banana 2 is half the price in the API, works faster and supports 1:8 and 8:1 frames, which is why Google recommends it for everyday tasks. Seedream 4.5 is an alternative for photorealism in 4K and is also in the AI2Face generator. GPT Image 2 accepts the most references, and it is in the AI2Face generator too.

How to write prompts for Nano Banana Pro

The model responds best to a prompt written like a brief for a photographer or designer:

1. Describe the whole scene: who or what is in the frame, where, what time of day, what mood.
2. Add shooting parameters: “85mm lens, f/1.8”, “soft window light”, “sunset light”.
3. Put text in quotes and say where it should go: headline "NIGHT JAZZ" at the top.
4. For infographics, list the items in order, like in the coffee example in the gallery.
5. Edit iteratively: instead of a new prompt, ask to change one detail in the finished image.

The model understands English prompts best, but other languages work too. All prompts for the examples on this page are given in full — you can copy and adapt them. Seven techniques with breakdowns and results are collected in the article Nano Banana prompts.

How to use Nano Banana Pro in AI2Face

Officially, Nano Banana Pro runs in the Gemini app, Google AI Studio and the Gemini API; the model has no separate official website, and domains with its name belong to third-party services. Without a Google AI subscription the model isn’t available even in Gemini itself, and Google’s services don’t work in every country — details in the guide Nano Banana free. In AI2Face, Pro is available in the generator, and the cost is shown before you generate:

1. Sign up — new accounts get welcome credits.
2. Open the generator and choose Nano Banana Pro from the model list.
3. Write a prompt, add references if needed, choose the aspect ratio and resolution.
4. Start the generation: the cost in credits is shown before you start, and the result is saved to your feed with the prompt and settings.

If you need to keep one person’s appearance across many shots, use the character builder: it assembles a scene from locations, outfits and poses and takes the face from 1–3 uploaded photos.

Model limitations

• Small and very long text sometimes contains errors — proofread final layouts.
• Google itself warns: masked edits, major lighting changes (such as day to night) and blending several images can sometimes produce unnatural results and artifacts. Check such edits especially carefully.
• Generation is slower and more expensive than with the lighter Nano Banana models: in the Gemini API a 1K or 2K image costs $0.134, a 4K one $0.24.
• The model follows Google’s safety policies and refuses prohibited content, including images of real people in compromising scenes.
• Every image contains an invisible SynthID watermark.

Conclusions

Nano Banana Pro is the model for final shots where a mistake is costly: a layout with lots of text, an ad in a brand style, a series with the same people and objects. For drafts, everyday portraits and bulk generation it’s overkill: Nano Banana 2 handles those faster and at half the API price. A practical workflow is to find the idea in Nano Banana 2 and polish the final version in Pro. The easiest way to compare both models on your own prompt is AI2Face.