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

# Anthropic Claude

> Learn how to use Anthropic Claude models in Agno.

Claude is a family of foundational AI models by Anthropic that can be used in a variety of applications.
See their model comparisons [here](https://docs.anthropic.com/en/docs/about-claude/models#model-comparison-table).

We recommend experimenting to find the best-suited model for your use-case. Here are some general recommendations:

* `claude-sonnet-4-20250514` model is good for most use-cases and supports image input.
* `claude-opus-4-1-20250805` model is their best model.
* `claude-3-5-haiku-20241022` model is their fastest model.

Anthropic has rate limits on their APIs. See the [docs](https://docs.anthropic.com/en/api/rate-limits#response-headers) for more information.

<Note>
  Claude API expects a `max_tokens` param to be sent with each request. Unless
  set as a param, Agno will default to 8192. See the
  [docs](https://docs.claude.com/en/api/messages) for more information.
</Note>

## Authentication

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

<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 agno.agent import Agent
  from agno.models.anthropic import Claude

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

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

  ## Prompt caching

  You can enable system prompt caching with our `Claude` model by setting `cache_system_prompt` to `True`:

  ```python theme={null}
  from agno.agent import Agent
  from agno.models.anthropic import Claude

  agent = Agent(
      model=Claude(
          id="claude-3-5-sonnet-20241022",
          cache_system_prompt=True,
      ),
  )
  ```

  Read more about prompt caching with Agno's `Claude` model [here](https://docs.agno.com/examples/models/anthropic/prompt_caching).
</CodeGroup>

<Note> View more examples [here](/examples/models/anthropic/basic). </Note>

## Params

| Parameter             | Type                                     | Default                        | Description                                                                                                                      |
| --------------------- | ---------------------------------------- | ------------------------------ | -------------------------------------------------------------------------------------------------------------------------------- |
| `id`                  | `str`                                    | `"claude-3-5-sonnet-20241022"` | The id of the Anthropic Claude model to use                                                                                      |
| `name`                | `str`                                    | `"Claude"`                     | The name of the model                                                                                                            |
| `provider`            | `str`                                    | `"Anthropic"`                  | The provider of the model                                                                                                        |
| `max_tokens`          | `Optional[int]`                          | `4096`                         | Maximum number of tokens to generate in the chat completion                                                                      |
| `thinking`            | `Optional[Dict[str, Any]]`               | `None`                         | Configuration for the thinking (reasoning) process (See [their docs](https://www.anthropic.com/news/visible-extended-thinking))) |
| `temperature`         | `Optional[float]`                        | `None`                         | Controls randomness in the model's output                                                                                        |
| `stop_sequences`      | `Optional[List[str]]`                    | `None`                         | A list of strings that the model should stop generating text at                                                                  |
| `top_p`               | `Optional[float]`                        | `None`                         | Controls diversity via nucleus sampling                                                                                          |
| `top_k`               | `Optional[int]`                          | `None`                         | Controls diversity via top-k sampling                                                                                            |
| `cache_system_prompt` | `Optional[bool]`                         | `False`                        | Whether to cache the system prompt for improved performance                                                                      |
| `extended_cache_time` | `Optional[bool]`                         | `False`                        | Whether to use extended cache time (1 hour instead of default)                                                                   |
| `request_params`      | `Optional[Dict[str, Any]]`               | `None`                         | Additional parameters to include in the request                                                                                  |
| `mcp_servers`         | `Optional[List[MCPServerConfiguration]]` | `None`                         | List of MCP (Model Context Protocol) server configurations                                                                       |
| `api_key`             | `Optional[str]`                          | `None`                         | The API key for authenticating with Anthropic                                                                                    |
| `default_headers`     | `Optional[Dict[str, Any]]`               | `None`                         | Default headers to include in all requests                                                                                       |
| `client_params`       | `Optional[Dict[str, Any]]`               | `None`                         | Additional parameters for client configuration                                                                                   |
| `client`              | `Optional[AnthropicClient]`              | `None`                         | A pre-configured instance of the Anthropic client                                                                                |
| `async_client`        | `Optional[AsyncAnthropicClient]`         | `None`                         | A pre-configured instance of the async Anthropic client                                                                          |

`Claude` is a subclass of the [Model](/reference/models/model) class and has access to the same params.