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

# OpenAI Chat Citations

> OpenAI web-search chat models return `url_citation` annotations alongside the content.

OpenAI web-search chat models return `url_citation` annotations alongside the content. Agno surfaces these on `response.citations`.

```python citations.py theme={null}
"""
Openai Chat Citations
=====================

Cookbook example for `openai/chat/citations.py`.

OpenAI web-search chat models return
`url_citation` annotations alongside the content. Agno surfaces these on
`response.citations`.
"""

from agno.agent import Agent
from agno.models.openai import OpenAIChat

# ---------------------------------------------------------------------------
# Create Agent
# ---------------------------------------------------------------------------
# `gpt-4o-search-preview` performs a web search and attaches url_citation
# annotations to the response.
agent = Agent(model=OpenAIChat(id="gpt-4o-search-preview"), markdown=True)

# ---------------------------------------------------------------------------
# Run Agent
# ---------------------------------------------------------------------------
if __name__ == "__main__":
    agent.print_response("What are the latest developments in AI? Cite your sources.")
```

## Run the Example

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

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

  <Step title="Export your OpenAI API key">
    <CodeGroup>
      ```bash Mac/Linux theme={null}
      export OPENAI_API_KEY="your_openai_api_key_here"
      ```

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

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

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

Full source: [cookbook/90\_models/openai/chat/citations.py](https://github.com/agno-agi/agno/blob/main/cookbook/90_models/openai/chat/citations.py)