Streaming

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

stream.py
"""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

Set up your virtual environment

uv venv --python 3.12
source .venv/bin/activate

Install dependencies

uv pip install -U agno openai

Export your OpenRouter API key

export OPENROUTER_API_KEY="your_openrouter_api_key_here"

Run the example

Save the code above as stream.py, then run:

python stream.py

Full source: cookbook/90_models/openrouter/responses/stream.py