> ## Documentation Index
> Fetch the complete documentation index at: https://docs.phidata.com/llms.txt
> Use this file to discover all available pages before exploring further.

# OpenRouter

OpenRouter is a platform for providing endpoints for Large Language models.

## Authentication

Set your `OPENROUTER_API_KEY` environment variable. Get your key from [here](https://openrouter.ai/settings/keys).

<CodeGroup>
  ```bash Mac theme={null}
  export OPENROUTER_API_KEY=***
  ```

  ```bash Windows theme={null}
  setx OPENROUTER_API_KEY ***
  ```
</CodeGroup>

## Example

Use `OpenRouter` with your `Agent`:

<CodeGroup>
  ```python agent.py theme={null}
  from phi.agent import Agent, RunResponse
  from phi.model.openrouter import OpenRouter

  agent = Agent(
      model=OpenRouter(id="gpt-4o"),
      markdown=True
  )

  # Get the response in a variable
  # run: RunResponse = agent.run("Share a 2 sentence horror story.")
  # print(run.content)

  # Print the response in the terminal
  agent.print_response("Share a 2 sentence horror story.")

  ```
</CodeGroup>

## Params

<Snippet file="model-openrouter-params.mdx" />

OpenRouter also supports the params of [OpenAI](/models/openai).