Basic Reasoning Agent

Setting reasoning=True makes the agent reason through the task before returning its response.

Add the following code to your Python file

basic_cot.py

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

task = (
    "Analyze the key factors that led to the signing of the Treaty of Versailles in 1919. "
    "Discuss the political, economic, and social impacts of the treaty on Germany and how it "
    "contributed to the onset of World War II. Provide a nuanced assessment that includes "
    "multiple historical perspectives."
)

reasoning_agent = Agent(
    model=OpenAIChat(id="gpt-4o"),
    reasoning=True, # The Agent will be able to reason.
    markdown=True,
)
reasoning_agent.print_response(task, stream=True, show_full_reasoning=True)

Set up your virtual environment

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

uv venv --python 3.12
.venv\Scripts\activate

Install dependencies

uv pip install -U openai agno

Export your OpenAI API key

  export OPENAI_API_KEY="your_openai_api_key_here"

  $Env:OPENAI_API_KEY="your_openai_api_key_here"

Run Agent

python basic_cot.py

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Basic Reasoning Agent