# Gemini 3.1 Pro Preview Custom Tools — price & specs

Source: https://modelbank.ai/models/gemini-3.1-pro-preview-customtools · updated 2026-11-12 · ModelBank

| Field | Value |
|---|---|
| Vendor | Google |
| Input price | $2 / 1M tokens |
| Output price | $12 / 1M tokens |
| Cached input | $0.2 / 1M tokens |
| Context window | 1,048,576 tokens |
| Max output | 65,536 tokens |
| Input modalities | text,audio,image,video,file |
| Reasoning / tool use | yes / yes |
| Intelligence / coding index | — / — |
| Released | 2026-02-25 |
| Retirement date | none announced |

## About

Gemini 3.1 Pro Preview Custom Tools is a variant of Gemini 3.1 Pro that improves tool selection behavior by preventing overuse of a general bash tool when more efficient third-party...

## Price history

- 2026-09-24: $2 in / $12 out


JSON: https://modelbank.ai/api/v1/models/gemini-3.1-pro-preview-customtools