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

# Basic Usage

> Run openai/gpt-oss-20b through OpenRouterResponses with reasoning enabled in sync and async modes.

OpenRouter's Responses API (beta) provides OpenAI-compatible access to multiple AI models through a unified interface.

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

OpenRouter's Responses API (beta) provides OpenAI-compatible access to multiple
AI models through a unified interface.

Requirements:
- Set OPENROUTER_API_KEY environment variable
"""

import asyncio

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,
)

# Print the response in the terminal

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

    # --- Async ---
    asyncio.run(agent.aprint_response("Share a 2 sentence horror story"))
```

## 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 `basic.py`, then run:

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

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