Google · image model

Nano Banana 2 (Gemini 3.1 Flash Image Preview)

Name: Nano Banana 2 (Gemini 3.1 Flash Image Preview)
Brand: Google
SKU: google/gemini-3.1-flash-image-preview
Price: 120 USD
Availability: InStock

Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview) is an image model on the Overblast AI Gateway. Call it as google/gemini-3.1-flash-image-preview with one Overblast API key, paid from your AI credits.

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Prices are final: what a call costs in AI credits, in US dollars. As of 2 October 2026, from the live catalogue.

Price

Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview): price
Price	$120.00 / M tokens

What it does

Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview): what it does
Does	Makes a picture from a prompt, Edits pictures you send, Re-renders a picture at 4K
Pictures in	0 to 14
Pictures per call	1
Resolutions	512, 1K, 2K, 4K
Aspect ratios	1:1, 1:4, 1:8, 2:3, 3:2, 3:4, 4:1, 4:3, 4:5, 5:4, 8:1, 9:16, 16:9, 21:9

Where it runs

Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview): where it runs
Regions	Runs globally; it cannot be pinned to the EU or the US yet
Zero data retention	Not applicable: image calls cannot carry the requirement
Endpoint	`POST /v1/images`

Call it

curl https://ai.overblast.app/v1/images \
  -H "Authorization: Bearer $OVERBLAST_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "google/gemini-3.1-flash-image-preview",
    "prompt": "A lighthouse at dawn, watercolour"
  }'

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