> ## 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.

# Anthropic Claude

Claude is a family of foundational AI models by Anthropic that can be used in a variety of applications.

## Authentication

Set your `ANTHROPIC_API_KEY` environment. You can get one [from Anthropic here](https://anthropic.com/).

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

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

## Example

Use `Claude` with your `Agent`:

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

  agent = Agent(
      model=Claude(id="claude-3-5-sonnet-20240620"),
      markdown=True
  )

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

  # Print the response on the terminal
  agent.print_response("Share a 2 sentence horror story.")
  ```
</CodeGroup>

## Params

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