> ## 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.

# Streaming

> Stream an OpenRouter Responses agent's output with print_response(stream=True).

```python stream.py theme={null}
"""Streaming example using OpenRouter with the Responses API.

Requirements:
- Set OPENROUTER_API_KEY environment variable
"""

from agno.agent import Agent
from agno.models.openrouter import OpenRouterResponses

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

agent = Agent(
    model=OpenRouterResponses(id="openai/gpt-oss-20b", reasoning={"enabled": True}),
    markdown=True,
)

# Stream the response
agent.print_response("Write a short poem about the moon", stream=True)

# ---------------------------------------------------------------------------
# Run Agent
# ---------------------------------------------------------------------------

if __name__ == "__main__":
    pass
```

## 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 OpenRouter API key">
    <CodeGroup>
      ```bash Mac/Linux theme={null}
      export OPENROUTER_API_KEY="your_openrouter_api_key_here"
      ```

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

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

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

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