---
title: "Google Vertex AI"
description: "Configure Strix with Gemini models via Google Cloud"
---

## Installation

Vertex AI requires the Google Cloud dependency. Install Strix with the vertex extra:

```bash
pipx install "strix-agent[vertex]"
```

## Setup

```bash
export STRIX_LLM="vertex_ai/gemini-3-pro-preview"
```

No API key required—uses Google Cloud Application Default Credentials.

## Authentication

### Option 1: gcloud CLI

```bash
gcloud auth application-default login
```

### Option 2: Service Account

```bash
export GOOGLE_APPLICATION_CREDENTIALS="/path/to/service-account.json"
```

## Available Models

| Model | Description |
|-------|-------------|
| `vertex_ai/gemini-3-pro-preview` | Best overall performance for security testing |
| `vertex_ai/gemini-3-flash-preview` | Faster and cheaper |

## Project Configuration

```bash
export VERTEXAI_PROJECT="your-project-id"
export VERTEXAI_LOCATION="us-central1"
```

## Prerequisites

1. Enable the Vertex AI API in your Google Cloud project
2. Ensure your account has the `Vertex AI User` role