Non-Reasoning Model Agent

This example demonstrates how to use a non-reasoning model as a reasoning model.

For reasoning, we recommend using a Reasoning Agent (with reasoning=True), or to use an appropriate reasoning model with reasoning_model=.

Code

cookbook/reasoning/agents/default_chain_of_thought.py

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

reasoning_agent = Agent(
    model=OpenAIChat(id="gpt-5-mini"),
    reasoning_model=OpenAIChat(
        id="gpt-5-mini", # This model will be used for reasoning, although it is not a native reasoning model.
        max_tokens=1200,
    ),
    markdown=True,
)
reasoning_agent.print_response(
    "Give me steps to write a python script for fibonacci series",
    stream=True,
    show_full_reasoning=True,
)

# It uses the default model of the Agent
reasoning_agent = Agent(
    model=OpenAIChat(id="gpt-5-mini", max_tokens=1200),
    reasoning=True,
    markdown=True,
)
reasoning_agent.print_response(
    "Give me steps to write a python script for fibonacci series",
    stream=True,
    show_full_reasoning=True,
)

Usage

1. Create a virtual environment

   Open the Terminal and create a python virtual environment.

   Mac

   python3 -m venv .venv
   source .venv/bin/activate
   
2. Set your API key

   export OPENAI_API_KEY=xxx
   
3. Install libraries

   pip install -U openai agno
   
4. Run Example

   Mac

   python cookbook/reasoning/agents/default_chain_of_thought.py