> ## Documentation Index
> Fetch the complete documentation index at: https://agno-v2-codex-docs-audit-20260719-0149.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Anthropic Thinking

> Enable Claude extended thinking with a token budget and stream the response.

<Warning>
  Anthropic retired `claude-3-7-sonnet-20250219` on February 19, 2026. Replace it with `claude-sonnet-4-6` before running. See [Claude model deprecations](https://platform.claude.com/docs/en/about-claude/model-deprecations).
</Warning>

```python thinking.py theme={null}
"""
Anthropic Thinking
==================

Cookbook example for `anthropic/thinking.py`.
"""

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

# ---------------------------------------------------------------------------
# Create Agent
# ---------------------------------------------------------------------------

agent = Agent(
    model=Claude(
        id="claude-3-7-sonnet-20250219",
        max_tokens=2048,
        thinking={"type": "enabled", "budget_tokens": 1024},
    ),
    markdown=True,
)

# Print the response in the terminal

# ---------------------------------------------------------------------------
# Run Agent
# ---------------------------------------------------------------------------
if __name__ == "__main__":
    # --- Sync ---
    agent.print_response("Share a very scary 2 sentence horror story")

    # --- Sync + Streaming ---
    agent.print_response("Share a very scary 2 sentence horror story", stream=True)
```

## Run the Example

<Steps>
  <Snippet file="create-venv-step.mdx" />

  <Step title="Install dependencies">
    ```bash theme={null}
    uv pip install -U agno anthropic
    ```
  </Step>

  <Step title="Export your Anthropic API key">
    <CodeGroup>
      ```bash Mac/Linux theme={null}
      export ANTHROPIC_API_KEY="your_anthropic_api_key_here"
      ```

      ```bash Windows theme={null}
      $Env:ANTHROPIC_API_KEY="your_anthropic_api_key_here"
      ```
    </CodeGroup>
  </Step>

  <Step title="Update the Claude model">
    Replace `claude-3-7-sonnet-20250219` with `claude-sonnet-4-6` in the saved file.
  </Step>

  <Step title="Run the example">
    Save the code above as `thinking.py`, then run:

    ```bash theme={null}
    python thinking.py
    ```
  </Step>
</Steps>

Full source: [cookbook/90\_models/anthropic/thinking.py](https://github.com/agno-agi/agno/blob/v2.7.4/cookbook/90_models/anthropic/thinking.py)