Gemini 3.1 Flash Image vs Gemini 3.1 Flash Image (Nano Banana 2)

A side-by-side comparison of Gemini 3.1 Flash Image and Gemini 3.1 Flash Image (Nano Banana 2): input/output pricing, capabilities and available endpoints, served live from 370.AI. Both are reachable with the same API key.

Pricing comparison

ItemGemini 3.1 Flash ImageGemini 3.1 Flash Image (Nano Banana 2)
Input (per 1M tokens)$0.375$0.375
Output (per 1M tokens)$2.25$2.25

Which should you pick

Which is cheaper, Gemini 3.1 Flash Image or Gemini 3.1 Flash Image (Nano Banana 2)?

On input, Gemini 3.1 Flash Image is cheaper ($0.375 vs $0.375 per 1M tokens). On output, Gemini 3.1 Flash Image is cheaper ($2.25 vs $2.25 per 1M tokens). All prices are per million tokens in USD.

Can I switch between Gemini 3.1 Flash Image and Gemini 3.1 Flash Image (Nano Banana 2) without changing my code?

Yes. Both are available on 370.AI through one API key and the same OpenAI-compatible endpoint — switching means changing the model field from "gemini-3.1-flash-image" to "gemini-3.1-flash-image-preview", nothing else.

Both are available on 370.AI under one API key — switching between them means changing the model field and nothing else, so you can use each where it fits rather than picking one.

Gemini 3.1 Flash Image · Gemini 3.1 Flash Image (Nano Banana 2) · All models