# Nano Banana 2

Nano Banana 2 は Google のAIモデルです。リリース日：2026-05-28。 コンテキストウィンドウは131,072 トークンです。 100万トークンあたりの料金は、入力が$0.50 (text/image)、出力が$60.00 (images); $3.00 (text and thinking)です。

- 開発元: Google
- Id: gemini-3.1-flash-image
- 報道段階: 2026-02-26T00:00:00.000Z
- リリース済み: 2026-05-28T00:00:00.000Z
- 発見: 2026-09-21T15:29:15.837Z
  - [参照リンク](https://models.dev/#gemini-3.1-flash-image)
- 状態: リリース済み
- 正規URL: https://alexgetman.com/ja/models/google/gemini-3-1-flash-image/

## よくある質問

### Nano Banana 2 のコンテキスト長は？

コンテキストウィンドウは131,072 トークンです。

### Nano Banana 2 の料金は？

100万トークンあたりの料金は、入力が$0.50 (text/image)、出力が$60.00 (images); $3.00 (text and thinking)です。

### Nano Banana 2 のリリース日は？

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
## 時系列

- 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

## 参照リンク

- [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)

## シグナル

- [models.dev で Nano Banana 2 を発見](https://alexgetman.com/ja/signals/2026/09/21/gemini-3-1-flash-image/)