# compare-open-source-models (Open-Source Model Comparison)

This example compares DeepSeek, Mistral, Llama, and Qwen on various tasks with factual assertions using OpenRouter.

See the [guide](https://www.promptfoo.dev/docs/guides/compare-open-source-models/) for more details.

## Setup

```sh
npx promptfoo@latest init --example compare-open-source-models
cd compare-open-source-models
```

Set the required environment variable:

```sh
export OPENROUTER_API_KEY=your-openrouter-key
```

## Run

```sh
npx promptfoo@latest eval
```

## View

```sh
npx promptfoo@latest view
```