Nano Banana Pro (Gemini 3 Pro Image)

About

Gemini 3 Pro Image (Nano Banana Pro) is Google's flagship closed image-generation and editing model, served through the Gemini API. Standard pricing is $0.134 per 1K/2K image ($0.24 per 4K image).

Architecture

Type

diffusion

Closed Google image-generation model (Nano Banana Pro / Gemini 3 Pro Image). Generates and edits high-resolution images through the Gemini API. Architecture and parameter count are not disclosed by Google.

Pricing

$0.134 per image (1K/2K (4K: $0.24))

Provenance

Source

openrouter.ai

Last verified

2026-06-20