Nano Banana 2
Generate high-quality images at up to 4K resolution using Google's Gemini 3.1 Flash model. Nano Banana 2 is optimized for speed, supports text-to-image and image editing with reference images, and offers flexible aspect ratios.
50% less than the priciest provider (7 compared). Same model, same output.
Optional input images to edit or use as reference (up to 14). Leave empty for pure text-to-image.
Resolution
Output resolution. 0.5K and 1K are the cheap rungs; 4K is the premium rung.
Aspect Ratio
Aspect ratio of the generated image. 'auto' lets the model choose from your prompt and inputs.
Output Format
The format of the generated image.
50% less than the priciest provider (7 compared). Same model, same output.
Your result renders here.
Use Nano Banana 2 via the API
Generate with Nano Banana 2 from your own code. Async by design: submit a generation, get a run id back instantly, poll until it completes. Billed in credits at the best available provider price — from $0.045 per image.
1 — Start a generation
curl -X POST https://app.scenetra.com/api/v1/generate/nano-banana-2 \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{"prompt":"a watercolor fox in falling snow, soft light","resolution":"1K","aspect_ratio":"1:1"}'Response (202)
{
"runId": "run_abc123",
"status": "PENDING",
"model": "nano-banana-2",
"estimatedCredits": 40,
"statusUrl": "/api/v1/runs/run_abc123"
}2 — Poll until COMPLETED (every 2-5 seconds)
curl https://app.scenetra.com/api/v1/runs/run_abc123 \
-H "Authorization: Bearer YOUR_API_KEY"Response
{
"runId": "run_abc123",
"status": "COMPLETED",
"progress": { "completed": 1, "total": 1 },
"outputs": [
{ "type": "image", "url": "https://images.scenetra.com/..." }
],
"error": null,
"estimatedCredits": 40
}Request fields
| Field | Type | Description | Default |
|---|---|---|---|
| prompt* | string | Describe the image to generate, or the edit to apply to the input images. | — |
| image_urls | string[] (https URLs) | Optional input images to edit or use as reference (up to 14). Leave empty for pure text-to-image. | — |
| resolution | string | Output resolution. 0.5K and 1K are the cheap rungs; 4K is the premium rung.0.5K · 1K · 2K · 4K | 1K |
| aspect_ratio | string | Aspect ratio of the generated image. 'auto' lets the model choose from your prompt and inputs.auto · 21:9 · 16:9 · 3:2 · 4:3 · 5:4 · 1:1 · 4:5 · 3:4 · 2:3 · 9:16 | auto |
| num_images | number | How many images to generate (1-4). Billed per image. | 1 |
| output_format | string | The format of the generated image.png · jpeg | png |
| callbackUrl | string (https URL) | Optional. When the run finishes (completed or failed), we POST the final run status to this URL — same shape as the poll response, plus model, params, and chargedCredits. Best-effort; polling remains the source of truth. | |
Unknown fields are rejected with a helpful 400. Media fields take https URLs. There is no provider parameter — every run is routed to the cheapest capable provider automatically.
Good to know
Billing
Runs bill your account credits at provider cost with 0% markup. The submit response includes the credit estimate; failed generations are refunded automatically. Add ?dryRun=1 to get the estimate without running anything.
Errors
Errors are always { "error": { "code", "message" } } with stable codes: unauthorized, model_not_available, invalid_parameter, insufficient_credits, rate_limited. A failed run is not an HTTP error — poll responses report status: "FAILED" with the reason.
What makes Nano Banana 2 different
From 512px drafts to 4K finals
Nano Banana 2 spans the widest resolution range in the Nano Banana family: a 512px tier at $0.045 per image for rapid drafts, 1K and 2K for everyday work, and full 4K at $0.151 per image for final assets. Iterate cheap, then re-run the winning prompt at 4K — on a Scenetra board that's changing one field on the node and hitting run again.
Built on Gemini 3.1 Flash, tuned for speed
As the Flash-based tier of Google's newest image stack, Nano Banana 2 is optimized for fast turnaround, which makes it the natural pick for iteration-heavy workflows where you generate a batch of variations before choosing a winner. Per image it costs roughly half of Nano Banana Pro — that's exactly the trade it's designed for: near-Pro output at iteration price.
Edit with up to 14 reference images
Beyond pure text-to-image, Nano Banana 2 accepts up to 14 reference images for style, composition, and subject guidance. Keep a character consistent across a series, restyle a product shot, or blend elements from several sources — reference images wire straight into the node's inputs on your board, including outputs from other nodes.
The middle of a three-tier family
Nano Banana 2 sits between the original Nano Banana ($0.039 per image, the volume tier) and Nano Banana Pro (the fidelity tier). On Scenetra all three run side by side on the same board, so you can send one prompt through every tier and compare results directly — no tab switching and no separate subscriptions.
Parameters
| Parameter | Type | Description | Default |
|---|---|---|---|
| Prompt* | text | Text describing the image you want to generate. | — |
| Aspect Ratio | select | Aspect ratio for the generated image.1:1 · 2:3 · 3:2 · 3:4 · 4:3 · 9:16 · 16:9 · 21:9 | 1:1 |
| Image Size | select | Resolution of the generated image.512px · 1K · 2K · 4K | 1K |
| Reference Images | image upload | Optional reference images for style or composition guidance. Supports up to 14 images. | — |
Pricing
From $0.045 per image
Pay per generation — only pay for what you use.
512px
$0.045
per image
1K
$0.067
per image
2K
$0.101
per image
4K
$0.151
per image
What a video costs
| Duration | Per image |
|---|---|
| 512px | $0.05 |
| 1K (default) | $0.07 |
| 4K | $0.16 |
Use cases
Marketing & ads
- Campaign visuals at 4K
- A/B creative variants in batches
- Localized ad imagery
- Moodboards in minutes
E-commerce
- Product shots on new backgrounds
- Seasonal listing refreshes
- Lifestyle composites from references
- Catalog variants at low cost
Social content
- Thumbnails and covers
- Vertical 9:16 visuals
- Series with a consistent style
- Fast one-off trend posts
Design & concept art
- Style exploration at 512px
- Character sheets from references
- Environment concepts
- Client option rounds side by side
Frequently asked questions
What is Nano Banana 2?+
Nano Banana 2 is Google's Gemini 3.1 Flash image model — the newest fast tier in the Nano Banana family. It generates images from text prompts and edits images using up to 14 references, at resolutions from 512px up to 4K. On Scenetra it runs as a node in the visual workflow editor, alongside Nano Banana Pro and the original Nano Banana.
Is Nano Banana 2 free or paid?+
Nano Banana 2 is a paid model billed per image. On Scenetra you pay per image from your credit balance — from $0.045 at 512px — with no subscription gating the model and nothing to cancel.
How much does Nano Banana 2 cost?+
On Scenetra, Nano Banana 2 costs $0.045 per image at 512px, $0.067 at 1K, $0.101 at 2K, and $0.151 at 4K. You only pay for what you generate — there is no monthly plan required.
Can Nano Banana 2 make 4K images?+
Yes — 4K is a native output option, at $0.151 per image. A common workflow is to iterate at the $0.045 512px tier or the 1K default, then re-run the final prompt at 4K for the deliverable.
Is Nano Banana 2 better than Nano Banana Pro?+
They target different jobs. Nano Banana 2 is faster and roughly half the price per image, which makes it the better default for iteration and volume. Nano Banana Pro is the higher-fidelity tier — stronger on complex edits, realism, and text rendering. On Scenetra you don't have to pick in advance: both are on the same board, so you can run the same prompt through each and compare.
How do I use Nano Banana 2?+
Sign up for Scenetra, drop a Nano Banana 2 node onto your board, type a prompt, and generate. Scenetra is web-based, so it works anywhere without installs, and you don't need a Google API key — generations are billed per image from your credit balance.
Can Nano Banana 2 edit existing images?+
Yes. Attach up to 14 reference images to the node and describe the edit or the style you want in the prompt. References can be uploads or outputs from other nodes on your board, which makes multi-step edit pipelines straightforward.
What aspect ratios does Nano Banana 2 support?+
Eight ratios: 1:1, 2:3, 3:2, 3:4, 4:3, 9:16, 16:9, and 21:9 — covering square, portrait, landscape, vertical social formats, and ultrawide.
One-click tools built on Nano Banana 2
Ready-made workflows — fill in a form, no node editor needed.
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View model →Start creating with Nano Banana 2
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