# Nano Banana 2 (Gemini 3.1 Flash Image Preview)

> Nano Banana 2 (Gemini 3.1 Flash Image Preview) by Google: current API prices in USD per 1M
> tokens, metadata, recent events and price history. Markdown mirror of
> https://techagent.net/en/models/google-gemini-3-1-flash-image-preview.

- model_id: `google:google-gemini-3-1-flash-image-preview`
- Provider: Google
- Status: active
- Context window: 131072 tokens
- Max output tokens: 32768
- Modalities: image, text → image, text
- Released: -
- Knowledge cutoff: -
- Open source: no

Data as of: 2026-07-29 (2026-07-29T13:30:00.002819+00:00)

## Current prices (USD per 1M tokens)

| Channel | Region | Tier | Input | Output | Cached input | Promo | Last verified | Stale |
|---|---|---|---|---|---|---|---|---|
| openrouter | global | standard | 0.5 | 3 | - | no | 2026-08-02 | no |

## Recent events

No published events for this model yet.

## Price history (USD per 1M tokens)

### input

No published history yet.

### output

No published history yet.

Full history for all models: https://techagent.net/downloads/price-history.csv
Machine access: `GET https://techagent.net/api/v1/models/google:google-gemini-3-1-flash-image-preview` or the MCP tool priceradar_get_model.