# Nano Banana 2

Nano Banana 2 是 Google 的 AI 模型，於 2026-05-28 發布。 上下文視窗為131,072 token。 每百萬 token 的價格為：輸入 $0.50 (text/image)，輸出 $60.00 (images); $3.00 (text and thinking)。

- 開發商: Google
- Id: gemini-3.1-flash-image
- 據報導: 2026-02-26T00:00:00.000Z
- 已發布: 2026-05-28T00:00:00.000Z
- 發現: 2026-09-21T15:29:15.837Z
  - [參考連結](https://models.dev/#gemini-3.1-flash-image)
- 狀態: 已發布
- 標準網址: https://alexgetman.com/zh-Hant/models/google/gemini-3-1-flash-image/

## 常見問題

### Nano Banana 2 的上下文視窗有多大？

上下文視窗為131,072 token。

### Nano Banana 2 的價格是多少？

每百萬 token 的價格為：輸入 $0.50 (text/image)，輸出 $60.00 (images); $3.00 (text and thinking)。

### Nano Banana 2 何時發布？

2026-05-28。

- `gemini-3.1-flash-image` · standard · Output price: ≈ $0.045 / image · per 0.5K image
- `gemini-3.1-flash-image` · standard · Output price: $0.067 / image · per 1K image
- `gemini-3.1-flash-image` · standard · Output price: $0.101 / image · per 2K image
- `gemini-3.1-flash-image` · standard · Output price: $0.151 / image · per 4K image
## 時間軸

- 2026-07-01T14:56:03.000Z · [Alex Getman](https://alexgetman.com/22/google-released-nano-banana-2-lite/)
> Google released Nano Banana 2 Lite
> 
> The new model generates an image in about 4 seconds and costs $0.034 per 1K image.
> 
> In Gemini, it is available by selecting 3.1 Flash Lite.
> 
> The main use case is fast drafts: run several prompts, pick the best result, then send it for refinement in Nano Banana 2 or GPT Image.
> 
> In terms of quality, Lite nearly matches the full version: 1251 Elo vs 1270 for Nano Banana 2 on lmarena.
- 2026-11-14T00:48:47.606Z · [Google · official articles](https://deepmind.google/blog/nano-banana-2-combining-pro-capabilities-with-lightning-fast-speed/)
> Gemini app: Nano Banana 2 will replace Nano Banana Pro across the Fast, Thinking and Pro models

## 參考連結

- [Arena · leaderboards](http://aistudio.google.com/prompts/new_chat?model=gemini-3.1-flash-image)
- [Gemini · deprecations](https://ai.google.dev/gemini-api/docs/deprecations?hl=en)
- [Gemini · pricing](https://ai.google.dev/gemini-api/docs/pricing)
- [review](https://aistudio.google.com/api-reference/models)
- [review](https://aistudio.google.com/docs/changelog)
- [review](https://aistudio.google.com/docs/models/gemini-3.1-flash-image)
- [gemini-pricing](https://aistudio.google.com/docs/pricing)
- [editorial](https://alexgetman.com/22/google-released-nano-banana-2-lite/)
- [vertex-google-models](https://console.cloud.google.com/vertex-ai/publishers/google/model-garden/gemini-3.1-flash-image)
- [google-articles](https://deepmind.google/blog/nano-banana-2-combining-pro-capabilities-with-lightning-fast-speed/)
- [models-dev](https://models.dev/#gemini-3.1-flash-image)
- [OpenCode · discovery](https://opencode.ai/data/google/gemini-3-1-flash-image)

## 訊號

- [在 models.dev 發現 Nano Banana 2](https://alexgetman.com/zh-Hant/signals/2026/09/21/gemini-3-1-flash-image/)