---
title: "Gemini 3.1 Pro (preview)"
description: "Google's Gemini Pro model for complex tasks, in preview."
canonical: "https://vetted.tools/models/gemini-3-1-pro-preview"
source: "https://vetted.tools/models/gemini-3-1-pro-preview.md"
---

# Gemini 3.1 Pro (preview)

Google's Gemini Pro model for complex tasks, in preview.

Source: https://vetted.tools/models/gemini-3-1-pro-preview

- Slug: `gemini-3-1-pro-preview`
- By [Google](https://vetted.tools/companies/google) ([deepmind.google](https://deepmind.google/models/gemini/), checked 2026-09-26)
- Official page: [https://deepmind.google/models/gemini/](https://deepmind.google/models/gemini/)

## Facts

- Capabilities: File input, Tool use, Reasoning, Vision, Web search, Implicit caching, Structured output ([Vercel AI Gateway](https://ai-gateway.vercel.sh/v1/models), checked 2026-09-25)
- Context window: 1M tokens (1,000,000) ([Vercel AI Gateway](https://ai-gateway.vercel.sh/v1/models), checked 2026-09-25)
- Gateway ID: google/gemini-3.1-pro-preview ([Vercel AI Gateway](https://ai-gateway.vercel.sh/v1/models), checked 2026-09-25)
- Input: $2 per 1M tokens. Above 200,000 input tokens: $4 in, $18 out per 1M ([Vercel AI Gateway](https://ai-gateway.vercel.sh/v1/models), checked 2026-09-25)
- Knowledge cutoff: Jan 2025 ([Vercel AI Gateway](https://ai-gateway.vercel.sh/v1/models), checked 2026-09-25)
- Max output: 64K tokens (64,000) ([Vercel AI Gateway](https://ai-gateway.vercel.sh/v1/models), checked 2026-09-25)
- Takes: Text, image, PDF ([Vercel AI Gateway](https://ai-gateway.vercel.sh/v1/models), checked 2026-09-25)
- Returns: Text ([Vercel AI Gateway](https://ai-gateway.vercel.sh/v1/models), checked 2026-09-25)
- No training on prompts: Offered by every provider on the Vercel AI Gateway, when you turn it on ([Vercel AI Gateway](https://ai-gateway.vercel.sh/v1/models), checked 2026-09-25)
- Output: $12 per 1M tokens. Above 200,000 input tokens: $4 in, $18 out per 1M ([Vercel AI Gateway](https://ai-gateway.vercel.sh/v1/models), checked 2026-09-25)
- Released: Feb 19, 2026 ([Vercel AI Gateway](https://ai-gateway.vercel.sh/v1/models), checked 2026-09-25)
- Type: Language ([Vercel AI Gateway](https://ai-gateway.vercel.sh/v1/models), checked 2026-09-25)
- Zero data retention: Available on a paid Vercel plan through the AI Gateway, from some providers on it (you turn it on) ([Vercel AI Gateway](https://ai-gateway.vercel.sh/v1/models), checked 2026-09-25)

## Usage

- 67,380,338 requests and 1,069,296,742,040 tokens on [OpenRouter](https://openrouter.ai/google/gemini-3.1-pro-preview) over the 31 days to 2026-09-25.

## Elsewhere on this site

- Home: https://vetted.tools/index.md
- Use cases: https://vetted.tools/use-cases.md
- Tools: https://vetted.tools/tools.md
- The brief: https://vetted.tools/brief.md
- Assessment: https://vetted.tools/assessment.md
- Site summary for agents: https://vetted.tools/llms.txt
- Every published page in one file: https://vetted.tools/llms-full.txt
- Every URL the site publishes: https://vetted.tools/sitemap.xml