---
title: Google Gemini
url: https://arcana.otnelhq.com/docs/providers/google
---

# Google Gemini



Google Gemini offers industry-leading context windows (up to 1M tokens) with strong multimodal capabilities. Great for analyzing large codebases, documents, and images.




## Setup



```bash
# 1. Get your API key from https://aistudio.google.com/apikey
export GEMINI_API_KEY=...

# 2. Verify detection
arcana doctor

# 3. Run
arcana run "hello"
```




## Available Models



| Model | Context | Best For |
| --- | --- | --- |
| `gemini-2.5-pro` | 1M | Complex reasoning, coding, analysis |
| `gemini-2.5-flash` | 1M | Fast, cheap, good for most tasks |
| `gemini-2.0-flash` | 1M | Previous gen, still very capable |




## Config File



```json
{
  "provider": "google",
  "model": "gemini-2.5-pro",
  "utilityModel": "gemini-2.5-flash"
}
```




## Environment Variables



| Variable | Description |
| --- | --- |
| `GEMINI_API_KEY` | Your Google AI API key (required) |
| `GOOGLE_GENERATIVE_AI_API_KEY` | Alternative env var name |




## Pricing Notes



| Model | Input | Output |
| --- | --- | --- |
| gemini-2.5-pro | $1.25 | $10.00 |
| gemini-2.5-flash | $0.15 | $0.60 |



Prices per 1M tokens. Check [ai.google.dev/pricing](https://ai.google.dev/pricing) for current rates.




## Tips



- Gemini's 1M context window is perfect for analyzing entire codebases or long documents
- `gemini-2.5-flash` is extremely cost-effective for everyday tasks
- Gemini supports multimodal input — images, video, and audio
- Free tier available with rate limits