Nano Banana 2 (Gemini 3.1 Flash Image)

About

Gemini 3.1 Flash Image (Nano Banana 2) is Google's fast, low-cost closed image-generation model, served through the Gemini API. Standard pricing is about $0.067 per 1K image.

Architecture

Type

diffusion

Closed Google image-generation model (Nano Banana 2 / Gemini 3.1 Flash Image). Fast, low-cost image generation and editing through the Gemini API. Architecture and parameter count are not disclosed by Google.

Pricing

$0.067 per image (1K (0.5K: $0.045, 4K: $0.151))

Provenance

Source

openrouter.ai

Last verified

2026-06-20