import time

from langchain_openai import ChatOpenAI

model = ChatOpenAI(model="gpt-4.1-mini", temperature=0)
question = "Explain LangChain caching in two short sentences."

for run_number in range(1, 3):
    start = time.perf_counter()
    response = model.invoke(question)
    elapsed = time.perf_counter() - start

    print(f"Run {run_number}: {elapsed:.2f} seconds")
    print(response.content)
    print("-" * 40)