What is Nano Banana 2?

Nano Banana 2 is the nickname for Google's Gemini 3.1 Flash Image, the latest model in the Nano Banana family. It pairs the speed of Gemini Flash with stronger reasoning and real-world knowledge, and can generate images from a text prompt or edit your own uploads up to 4K.

Is Nano Banana 2 free to use on Dollify?

You can start for free with credits — no subscription required. Each generation spends a small amount of credits based on the resolution you pick, so you only pay as you create more.

Can I upload my own images as references?

Yes. Nano Banana 2 supports optional image references and can keep up to 14 objects (and as many as five characters) consistent across edits, which makes it strong for product shots, series, and storytelling.

What resolutions and aspect ratios does it support?

You can render at 1K, 2K, or 4K, and choose from eleven aspect ratios — from square 1:1 and portrait 3:4 / 9:16 to widescreen 16:9 and ultra-wide 21:9 — or let "auto" pick the best fit for your prompt.

How is Nano Banana 2 different from the original Nano Banana?

It generates faster, adds native 4K output, renders text and fine detail more cleanly, and draws on Gemini's world knowledge for things like infographics and diagrams — a meaningful step up in both speed and fidelity.

Do the images have a watermark?

Your generations are full-resolution and downloadable. As with all Gemini images, Google embeds an invisible SynthID provenance marker; there is no visible watermark on your output.

Nano Banana 2 AI Image Generator — Try it free

Key Features

Nano Banana 2 — Google's Gemini 3.1 Flash Image — is a state-of-the-art image model that combines the speed of Gemini Flash with the higher-quality reasoning and world knowledge of the Nano Banana Pro line. It's built for people who want sharp, prompt-accurate images fast, with the option to push all the way to 4K when the detail matters.

Up to 4K output at 1K, 2K, or 4K resolution
Eleven aspect ratios, from 1:1 and 9:16 to ultra-wide 21:9
Optional image references — guide a result with up to 14 source images
Multi-subject consistency across as many as five characters
Reliable text rendering for posters, UI mockups, and infographics
Real-world knowledge drawn from Gemini for diagrams and data visuals

Prompt Following & Real-World Knowledge

Nano Banana 2's headline strength is how literally it reads a prompt. Long, multi-clause descriptions — specific poses, materials, lighting, and on-image text — translate into the picture with far less drift than older models. Because it taps Gemini's world knowledge, it can also reason about what a thing actually looks like, which is why it's reliable for infographics, annotated diagrams, and turning rough notes into clean visuals.

Reviewers consistently single out its prompt adherence and clean text as the areas where it pulls ahead of the previous generation.

Image-to-Image & Multi-Subject Consistency

Beyond text-to-image, Nano Banana 2 takes optional references: upload one or more images and it uses them to steer the output. It's engineered for consistency — keeping up to 14 objects and five characters coherent across a series — so it shines when you need the same product, mascot, or person to look right shot after shot.

Typical reference-driven jobs:

Re-style or re-light an existing photo while keeping the subject intact
Drop a product into new scenes for a campaign
Build a multi-panel story with a recurring character

Text Rendering & Infographics

Legible in-image text is historically where image models fail. Nano Banana 2 treats text rendering and translation as a first-class feature, so headlines, labels, and short paragraphs come out crisp enough for social posts, ad creative, slide art, and infographics.

Resolution & Aspect Ratios

Pick the output that fits the channel:

Setting	Options
Resolution	1K, 2K, 4K
Aspect ratios	auto, 1:1, 2:3, 3:2, 3:4, 4:3, 4:5, 5:4, 9:16, 16:9, 21:9
References	Optional, up to 14 images

Set resolution to 4K for print, hero banners, and detail-heavy work; stick with 1K for quick drafts and social where speed and cost matter more.

Who Is Nano Banana 2 Best For

E-commerce Sellers

Product photography, lifestyle scenes, and consistent catalog imagery — keep the same item recognizable across every shot.

Fast, on-brand posts with readable text overlays, in exactly the ratio each platform wants.

Marketing Teams

Ad creative, infographics, and campaign variations that stay visually coherent across a set.

Designers

High-resolution starting points and reference-guided edits that drop straight into a larger workflow.

Nano Banana 2 vs GPT Image 2 vs Seedream 5 Lite

Dimension	Nano Banana 2	GPT Image 2	Seedream 5 Lite
Prompt adherence	Excellent	Excellent	Good
Max resolution	4K	High	Standard
Image references	Up to 14	Yes	Yes
Text rendering	Strong	Strong	Fair
Speed	Fast	Moderate	Very fast
Best for	Detail + consistency	Typography + accuracy	Quick, budget drafts

Prefer rock-solid typography? Try GPT Image 2. Just need fast, cheap drafts? Seedream 5 Lite is the budget pick.

Pros & Cons

Pros

Among the best prompt adherence available today
Native 4K with eleven aspect ratios
Strong, legible in-image text
Excellent multi-subject and product consistency
Fast for its quality tier

Cons

4K renders cost more credits and take longer than 1K drafts
Highly stylized, painterly art is sometimes better served by specialist models
Like all Gemini images, outputs carry an invisible SynthID marker

Why Create with Nano Banana 2 on Dollify

On Dollify you can run Nano Banana 2 alongside every other top model in one place — no juggling accounts or tools. Start free with credits and pay only as you create, on the web or via API. Write a prompt above to generate instantly, or browse the explore wall to see what's possible and remix any result in a click.

Nano Banana 2 AI Image Generator