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Nano Banana 2 vs Pro: Which Gemini Image Model to Use

Nano Banana 2 is Gemini 3.1 Flash Image, out since 26 February 2026. Nano Banana Pro is Gemini 3 Pro Image, out since 20 November 2025. One is the fast Flash branch, one is the reasoning-heavy Pro branch, and on Editly they sit behind the same form — so you can settle Nano Banana 2 vs Pro on your own prompt instead of someone else's demo reel.

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Nano Banana 2 vs Pro, Side by Side on Editly

Three Nano Banana models run here, and the differences that matter are the ones you can act on before you hit generate: how long a prompt each one accepts, how many reference images it takes, which aspect ratios appear in the dropdown, and what a single image costs in credits.

Nano Banana
Nano Banana 2Flash
Nano Banana ProPro
Google model nameGemini 2.5 Flash ImageGemini 3.1 Flash ImageGemini 3 Pro Image
Announced26 August 202526 February 202620 November 2025
Output resolutionNo resolution selector1K, 2K or 4K1K, 2K or 4K
Credits per image15, flat17 at 1K, 27 at 2K, 40 at 4K30 at 1K, 30 at 2K, 60 at 4K
Prompt lengthUp to 5,000 charactersUp to 20,000 charactersUp to 10,000 characters
Reference imagesUp to 10, 10 MB eachUp to 14, 30 MB eachUp to 8, 30 MB each
Aspect ratios10 presets plus auto14 presets plus auto, including 8:1 and 1:810 presets plus auto
Reach for it whenA quick edit needs to cost as little as possibleThe brief is long, multi-subject, panoramic or high volumeOne hero image has to be right on the first pass

Nano Banana 2 vs Pro: Four Things Worth Checking First

Flash Speed Carrying Pro-Class Capability

Google describes Nano Banana 2 as bringing the high-speed intelligence of Gemini Flash to visual generation, with advanced capabilities that used to sit only in the Pro tier, while Nano Banana Pro stays the specialist for maximum-fidelity work. That is the whole trade in one line: Flash-class turnaround, or Pro-class deliberation.

Fourteen Reference Images, Five Consistent Characters

Google documents Nano Banana 2 as holding character resemblance across up to five characters in a single workflow, and the Gemini API takes up to fourteen reference images per request. Editly opens all fourteen slots at 30 MB each, against eight for Nano Banana Pro, which makes multi-subject composites the clearest place the newer model pulls ahead.

4K Output, Panoramic Ratios, Legible In-Image Text

Both models generate at 1K, 2K and 4K, and both are built for readable, styled text inside the frame — infographics, menus, diagrams, ad copy. Nano Banana 2 adds the extreme formats on Editly: 8:1 and 4:1 banners, 1:4 and 1:8 verticals, on top of the usual 16:9, 9:16 and 21:9 set.

SynthID Provenance on Every Output, Either Way

Google states that images from these models carry an imperceptible SynthID watermark, so a file can later be checked for whether it was created or edited with Google AI. This is not a dimension that separates the two — it applies to Nano Banana 2 and Nano Banana Pro alike — but it is worth knowing before either goes into client work.

How to Run Nano Banana 2 and Nano Banana Pro on One Prompt

  1. 01

    Write One Prompt and Freeze It

    Open the Editly image generator and describe the shot in plain language. Nano Banana 2 accepts up to 20,000 characters, so name the subject, the lighting, the lens, the materials, and any words you want rendered inside the frame. Leave this prompt untouched for the rest of the test.

  2. 02

    Generate on Nano Banana 2 First

    Select Nano Banana 2, choose an aspect ratio, and pick 1K, 2K or 4K. Attach up to fourteen reference images if specific people or products have to stay recognisable. A 1K pass costs 17 credits, which makes this the cheap half of the experiment.

  3. 03

    Re-run on Nano Banana Pro and Judge

    Switch the model to Nano Banana Pro, change nothing else, and generate again at 30 credits for 1K. Put the two files side by side and score them on instruction following, text accuracy and material detail. That result, on your own subject, is worth more than any benchmark chart you will read online.

Nano Banana 2 vs Pro: Questions People Actually Ask

Settle Nano Banana 2 vs Pro on Your Own Prompt

All three Nano Banana models sit in the same generator here. A new account starts with 30 credits, enough for a full 1K pass on either one — no Google API key, no waiting list.

Open the Image Generator