# Calling a LLM The most basic building block of LangChain is calling an LLM on some input. Let's walk through a simple example of how to do this. For this purpose, let's pretend we are building a service that generates a company name based on what the company makes. In order to do this, we first need to import the LLM wrapper. ```python from langchain.llms import OpenAI ``` We can then initialize the wrapper with any arguments. In this example, we probably want the outputs to be MORE random, so we'll initialize it with a HIGH temperature. ```python llm = OpenAI(temperature=0.9) ``` We can now call it on some input! ```python text = "What would be a good company name a company that makes colorful socks?" print(llm(text)) ```