Nano Banana Pro Image Generator

The Flash models in this family are tuned for speed. Pro is tuned for judgement. Because it sits on a Gemini 3 Pro foundation, it brings more reasoning to a prompt: a requested diagram of the water cycle gets arrows in a sensible order, a 1920s street scene avoids modern cars, and a menu keeps prices aligned with dishes. That world knowledge is what separates it from models that only imitate how things look.

It is also the strongest typesetter of the group. Posters, packaging callouts, labelled diagrams and menus — the places where words must stay legible and correctly placed — are its home ground. Combine that with 4K output and multi-image composition and you have a model that can take a rough concept from a cheaper tier and turn it into a deliverable. The trade-off is cost and time: it uses more credits than Nano Banana 2, so treat it as the finishing tool rather than the sketchpad.

• Gemini 3 Pro reasoning — scenes, diagrams and infographics that make logical sense.
• Production-grade text — legible headlines, labels, menus and callouts.
• Up to 4K output for print, large displays and cropping room.
• Advanced edits — heavier transformations while key references stay intact.
• Multi-image composition — combine product, model and set references for consistent campaigns.
• Ten aspect ratios — 1:1 through 21:9, including 4:5 and 9:16.
• SynthID provenance — invisible watermark marking AI-generated content.

Item	Nano Banana Pro
Underlying model	Google Gemini 3 Pro Image
Output tiers	1K / 2K / 4K
Aspect ratios	1:1, 2:3, 3:2, 3:4, 4:3, 4:5, 5:4, 9:16, 16:9, 21:9
Inputs	Text, optional reference images, or both
Strengths	Text rendering, real-world accuracy, 4K finals
References on Cinel	Up to 3; members up to 8 where supported
Provenance	SynthID watermark
Cinel cost	From 9 credits (4K costs more)

1. Approve the idea cheaply first — sketch it with Nano Banana 2 Lite or Nano Banana 2.
2. Switch the picker to Nano Banana Pro and attach the approved draft plus any must-keep references (logo, product, face).
3. Write a brief that includes facts the image must respect: dates, place names, quantities, the exact wording of every line of text.
4. Choose the delivery size — 2K for web heroes, 4K for print or when you plan to crop.
5. Generate, proof every word and figure, and request precise fixes ("correct the year to 2026", "align the prices to the right").

• Put exact wording for any in-image text in quotation marks and say where it goes — "headline 'Summer Market' at the top in bold serif". Pro's text rendering rewards precise instructions.
• For infographics and diagrams, describe the structure first (three columns, a timeline, labeled parts) and then the visual style.
• Real-world accuracy is a strength, so name real materials, architectural styles or plant species rather than vague adjectives.
• Use 1K or 2K while iterating and reserve 4K for print or large displays, since the 4K tier costs more credits.
• Pick wide formats like 21:9 for hero banners or 4:5 for social posts at the start, so text and layout are composed for the final frame.

• Infographics and explainers — labelled processes, timelines and comparison charts.
• Print-ready posters and packaging — 4K files with headline and small-print hierarchy.
• Restaurant menus and price boards — dishes, prices and sections laid out cleanly.
• Historical or location-accurate scenes — period settings and recognisable places.
• Campaign key visuals — the final hero image after concepts were explored on cheaper tiers.
• Product callout graphics — feature labels pointing to parts of a device.

Nano Banana 2 gives near-Pro results for multi-reference composites at a lower credit cost (from 6) and faster turnaround; choose Pro only when fidelity, dense text or factual accuracy is the bottleneck. GPT Image 2.5 is cheaper for short English typography at 1K (2 credits for members), but Nano Banana Pro is the better choice for 4K deliverables and knowledge-heavy graphics such as maps or diagrams.