Ship Of Theseus Debate

Compare an agent with built-in chain-of-thought against one using deepseek-reasoner on the Ship of Theseus identity debate.

Demonstrates DeepSeek-backed reasoning for philosophical analysis.

ship_of_theseus.py

"""
Ship Of Theseus Debate
======================

Demonstrates DeepSeek-backed reasoning for philosophical analysis.
"""

from agno.agent import Agent
from agno.models.deepseek import DeepSeek
from agno.models.openai import OpenAIResponses

# ---------------------------------------------------------------------------
# Create Agent
# ---------------------------------------------------------------------------
task = (
    "Discuss the concept of 'The Ship of Theseus' and its implications on the notions of identity and change. "
    "Present arguments for and against the idea that an object that has had all of its components replaced remains "
    "fundamentally the same object. Conclude with your own reasoned position on the matter."
)

agent = Agent(
    model=OpenAIResponses(id="gpt-5.6"),
    reasoning_model=DeepSeek(id="deepseek-reasoner"),
    markdown=True,
)

# ---------------------------------------------------------------------------
# Run Agent
# ---------------------------------------------------------------------------
if __name__ == "__main__":
    agent.print_response(task, stream=True, show_full_reasoning=True)

Run the Example

1. Set up your virtual environment

   Mac

   uv venv --python 3.12
   source .venv/bin/activate
   
2. Install dependencies

   uv pip install -U agno openai
   
3. Export your API keys

   Mac/Linux

   export DEEPSEEK_API_KEY="your_deepseek_api_key_here"
   export OPENAI_API_KEY="your_openai_api_key_here"
   
4. Run the example

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

   python ship_of_theseus.py
   

Full source: cookbook/10_reasoning/agents/ship_of_theseus.py