How to Use Google Nano Banana on VdoBloom: Prompts, Ratios and Credit Costs

Google Nano Banana on VdoBloom is a pure text-to-image model that costs 6 credits — $0.30 — per image, renders in ten aspect ratios from 9:16 vertical through 21:9 ultrawide, and rewards prompts written as a described scene rather than a pile of comma-separated keywords. It does not edit uploaded images on this listing; that job belongs to Nano Banana Edit and Nano Banana Pro. This guide covers what the base model is genuinely good at, the exact numbers behind it, how to prompt it, and the specific moments when a different model is the smarter spend.

What Nano Banana actually is

Nano Banana began life as an anonymous codename on public model-testing arenas, where it started beating well-known generators before anyone knew who had built it. Google later confirmed it as part of the Gemini image family, by which point the fruit name had stuck permanently. On VdoBloom it runs through the image generation tab as a generation-only model, and it carries the trait that earned it the attention in the first place: it reads prompts as instructions about a scene, not as a bag of tags to satisfy.

Two practical consequences follow. First, it handles spatial relationships well — put the lamp behind the chair and it usually goes behind the chair. Second, it degrades gracefully with short prompts, because it fills in lighting and composition sensibly instead of producing something flat. VdoBloom users rate it 4.2.

The real specs and what they cost

Attribute	Nano Banana (base)
Model ID on VdoBloom	google/nano-banana
Capability	Text to image only (no reference-image input)
Aspect ratios	1:1, 2:3, 3:2, 3:4, 4:3, 4:5, 5:4, 9:16, 16:9, 21:9 (ten)
Resolution selector	None — fixed output (use Nano Banana Pro for 1K/2K/4K)
Credit cost	6 credits per image
Dollar cost at Lite rates	$0.30 per image
Content filtering	Strict — provider-side Google filters apply
User rating	4.2

The dollar figure comes from VdoBloom’s flat conversion: the Lite plan is $15 a month for 300 credits, so one credit is $0.05. Your 10 free signup credits therefore cover one Nano Banana image with 4 credits left over — enough to try a cheaper model alongside it before you decide what to buy. Credit packs start at $2.49 for 75 credits and never expire, which works out to roughly 12 Nano Banana renders for under three dollars. Full plan details live on the pricing page.

How it prices against its siblings

Model	Credits	Cost	What you get for the difference
Nano Banana 2 Lite	8	$0.40	Newer engine, accepts up to 10 input images, no resolution control
Nano Banana (base)	6	$0.30	Cheapest entry to the family; generation only
Nano Banana Edit	5	$0.25	Editing with up to 10 reference images — but needs an input image
Nano Banana 2	15	$0.75	1K/2K/4K, aspect auto, up to 14 input images
Nano Banana Pro (1K or 2K)	18	$0.90	Resolution control plus editing, up to 8 reference images
Nano Banana Pro (4K)	24	$1.20	Native 4K for print and heavy cropping
Nano Banana Special	20	$1.00	Pro at 2K with automatic prompt enhancement and a second refinement pass

Read that table as a ladder rather than a ranking. The base model is the cheapest way to find out whether the Nano Banana look suits your project at all.

What it is best at

Native portrait feed formats. The 4:5 and 5:4 ratios are the quiet standout. Most generators skip them, so people render 1:1 and crop, losing pixels and often the composition. Nano Banana generates straight into 4:5, which is the format Instagram gives the most vertical real estate to.

Editorial headers. Ask for a 16:9 or 21:9 scene with deliberate empty space on one side and it tends to respect the instruction, which makes overlaying a headline far less of a fight than with models that centre everything.

Concept exploration. At $0.30 a render you can generate six directions for under two dollars, then take the winning prompt to a higher-resolution model for the deliverable.

How to prompt Nano Banana well

1. Write a sentence, not a keyword list. This model interprets grammar. “A ceramicist’s hands pulling a tall vase on a wheel, late afternoon light from a window on the left” beats “pottery, hands, vase, golden hour, cinematic, 8k”.
2. Name the light before the style. Lighting direction and quality do more work than style adjectives. Say where the light comes from, how hard it is, and what colour it is.
3. Describe the frame. Say what is close to the camera, what is behind it, and where the negative space sits. Pair that with the ratio you actually need rather than fixing it in a crop.
4. Cut the render-quality filler. Trailing words like ultra-detailed, masterpiece and 8k were habits from older models; here they mostly dilute the instructions that matter.
5. Change one variable per attempt. Because there is no seed lock or editing pass on the base model, controlled single-variable edits to the prompt are how you converge.

A worked example

Say you need a hero image for a coffee subscription landing page, 21:9, with the right third clear for a headline.

First pass: “An overhead shot of a single pour-over coffee setup on a dark walnut counter, steam rising, soft window light from the left, the right third of the frame empty dark countertop.” Ratio 21:9. Cost: 6 credits.

What usually needs fixing: steam reads faintly and the empty third fills with props. Second pass: keep every word, add “no objects in the right third” and “visible steam catching the window light”. Cost: another 6 credits.

Third pass adjusts mood only — swap “soft window light” for “low warm morning light with long shadows”. Total spend to a usable hero: 18 credits, or $0.90. If the final asset needs to be printed or cropped hard, re-run the winning prompt once on Nano Banana Pro at 4K for 24 credits rather than generating from scratch there. Start either one from the image generation tool.

When to pick a different model

• You have a photo to change. The base model cannot take an input image. Go to Nano Banana Edit, which accepts up to 10 reference images for 5 credits.
• You need a specific output size. Only Nano Banana Pro exposes the 1K/2K/4K selector.
• Your prompt keeps getting refused. Nano Banana is labelled CENSORED on VdoBloom, meaning Google’s strict provider filters apply in full. Swimwear, dance, fitness and fashion prompts that mainstream tools reject are better routed to a model on the flexible tier; explicit and illegal content stays blocked everywhere on the platform.
• You want the model to fix your prompt for you. Nano Banana Special wraps the Pro tier at 2K with automatic prompt enhancement for 20 credits, which suits one-line briefs.

If a person appears in an image you generate and you intend to make them resemble a specific real individual, you need that person’s consent before you publish it. Paid VdoBloom plans download watermark-free with commercial rights; the free tier does not.

Frequently asked questions

How much does one Nano Banana image cost?

6 credits, which is $0.30 at the Lite plan rate of $15 for 300 credits. Credit packs start at $2.49 for 75 credits and never expire, so the per-image cost holds whether you subscribe or buy once.

Can Nano Banana edit an image I upload?

Not on this listing — it is generation only. Nano Banana Edit takes up to 10 reference images for 5 credits, and Nano Banana Pro edits with a 1K/2K/4K resolution selector for 18 to 24 credits.

What aspect ratios does it support?

Ten: 1:1, 2:3, 3:2, 3:4, 4:3, 4:5, 5:4, 9:16, 16:9 and 21:9. The 4:5 and 5:4 near-square formats are the unusual ones and are worth using natively rather than cropping into.

Can I choose 4K output?

Not on the base model. Nano Banana Pro is the tier with the resolution selector, and 4K there costs 24 credits versus 18 for 1K or 2K.

Why did my prompt get refused?

Google’s content filters run on this model at their strictest setting, and refusals are hard rather than softened. Rewriting to remove the trigger phrase sometimes works; switching to a model on VdoBloom’s flexible content tier is the more reliable fix for legitimate swimwear, dance and fashion briefs.

Do free credits cover it?

Yes. New accounts get 10 free credits with no card, which covers one Nano Banana image with 4 credits to spare. Free-tier downloads carry a watermark; paid plans do not.