Nano Banana API

The latest Nano Banana API, powered by Google Gemini 3.1 Flash Image Preview for fast 4K generation and editing with up to 14 reference images.

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Access Nano Banana API through APIMaster's OpenAI-compatible images endpoint. Nano Banana 2 supports text-to-image and image-to-image with extreme aspect ratios, optional Google search grounding, and resolution tiers from 0.5K to 4K, billed per image.

Input

ModelloPrompt

DimensioneRisoluzione

Google Search grounding

Immagini di riferimento (multiple)

Clicca per caricare un'immagine

JPEG / PNG / WebP (max 10 MB) · Up to 14 reference images

Output

Il tuo risultato apparirà qui.

What is the Nano Banana API?

Nano Banana API on APIMaster is powered by Nano Banana 2, Google's gemini-3.1-flash-image model. It delivers fast multimodal image generation with strong prompt following, up to 14 reference images for editing workflows, and native 4K output. Use the sync endpoint for one-shot results or async submit plus poll for batch pipelines.

Seleziona modello

gemini-3.1-flash-image

Canale 93

Per immagine$0.045/ img$0.0672/ imgRisparmia 33%

Cronologia fingerprint

Nessun dato di rilevamento

Uptime

Nessun dato di rilevamento

gemini-3.1-flash-image

Canale 92

Per immagine$0.053/ img$0.0672/ imgRisparmia 21%

Cronologia fingerprint

Nessun dato di rilevamento

Uptime

Nessun dato di rilevamento

gemini-3.1-flash-image

Canale 72

Per immagine$0.2467/ img

Cronologia fingerprint

Nessun dato di rilevamento

Uptime

Nessun dato di rilevamento

Transparent per-image pricing by resolution — pay only for the images you generate.

Nano Banana API — Pricing

Model	Our price	Official	Save
Nano Banana 2	$0.045/img	$0.0672/img	33%

Capabilities

Native 4K output

Generate up to 4K resolution images with sharp detail — resolution billed in 0.5K / 1K / 2K / 4K tiers.

Text & image-to-image

Up to 14 reference images for editing, style transfer, and multi-image fusion workflows.

Extreme aspect ratios

Supports auto sizing plus ratios from 1:1 through 21:9 and extreme 1:4 / 4:1 — ideal for banners and social formats.

Use cases

E-commerce product shotsUI mockups & app screensMarketing visualsImage editing pipelines4K creative assets

Quick start

curl https://apimaster.ai/v1/images/generations \
  -H "Authorization: Bearer $APIMASTER_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gemini-3.1-flash-image",
    "prompt": "An orange cat at sunset, watercolor"
  }'

Nano Banana API — Domande Frequenti

Which model id do I use for Nano Banana API?

Always use gemini-3.1-flash-image in the model field. Nano Banana 2 is the latest Nano Banana API product on APIMaster.

Which endpoint do I call?

POST /v1/images/generations (sync) or /v1/images/generations/async — not /chat/completions. See Quick start below.

How is billing calculated?

Per image, multiplied by resolution tier (0.5K/1K base, 2K ≈ 4/3×, 4K ≈ 2×). See the price table and usage logs for exact charges.

Can I use reference images?

Yes — up to 14 reference images via image_urls or multipart upload in the playground. JPEG, PNG, WebP, max 10MB each.

Is my data safe?

Yes. Your API data is not stored or used for training, and all requests are sent over encrypted connections.

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