Responses Reasoning O3 Mini

OpenAI schedules o3-mini and o4-mini for shutdown on October 23, 2026. The provider lifecycle notice lists their replacements. Check the selected replacement's reasoning and service-tier support before changing the source model ID.

This toolkit enables stock-price retrieval only. The source prompt asks for an investment report that would need additional data. Use the quote-focused prompt below to match the configured tools.

reasoning_o3_mini.py

"""
Openai Reasoning O3 Mini
========================

Cookbook example for `openai/responses/reasoning_o3_mini.py`.
"""

from agno.agent import Agent
from agno.models.openai import OpenAIResponses
from agno.tools.yfinance import YFinanceTools

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

agent = Agent(
    model=OpenAIResponses(id="o3-mini"),
    tools=[YFinanceTools()],
    markdown=True,
)

# Print the response in the terminal
agent.print_response("Write a report on the NVDA, is it a good buy?", 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 yfinance

Export your OpenAI API key

export OPENAI_API_KEY="your_openai_api_key_here"

Run the example

Save the code above as reasoning_o3_mini.py. Replace its agent.print_response(...) call with:

agent.print_response(
    "Fetch the NVDA and TSLA stock quotes and show them in a table. "
    "Report data limitations; these quotes alone do not establish investment merit.",
    stream=True,
)

Then run:

python reasoning_o3_mini.py

Full source: cookbook/90_models/openai/responses/reasoning_o3_mini.py