# Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview)

`google/gemini-3.1-flash-image-preview` — **openrouter** · CHAT

> Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview) (google/gemini-3.1-flash-image-preview) is a chat model from openrouter with a 131.1K-token context window; proprietary (API-only); capabilities reasoning, vision; input image, text; output image, text.

| Field | Value |
| --- | --- |
| Vendor | openrouter |
| Kind | CHAT |
| Context window | 131,072 tokens |
| Max output tokens | 65,536 tokens |
| Indicative price (US list) | $0.5 in / $3 out per 1M tokens (indicative US list — verify with vendor) |
| Input modalities | image, text |
| Output modalities | image, text |
| Capabilities | reasoning, vision |
| Weights | Proprietary (API-only) |
| Knowledge cutoff | 2025-01 |
| Release date | 2026-02-26 |
| Sources | committed, models-dev, openrouter-api |
| Last verified | 2026-11-05 |

*Part of the [Model Catalog](https://models.viglet.org/) — [openrouter models](https://models.viglet.org/models/openrouter/) · [Vendor JSON](https://models.viglet.org/by-vendor/openrouter.json) · [HTML](https://models.viglet.org/models/openrouter/google-gemini-3.1-flash-image-preview.html)*