Here is a 1-paragraph summary of the text: To build a ChatGPT-like SMS chatbot using OpenAI and Python, one must first set up an OpenAI account and obtain an API key, as well as create a Twilio account and phone number. Then, install necessary packages such as OpenAI's Python client library, Twilio's Python Helper library, Flask framework, and python-dotenv package. Create a .env file to store the API key securely and run ngrok to make the Flask app visible from the web. The chatbot will use the OpenAI API to generate text based on user input, with options such as model selection, max tokens, and temperature control available. With these steps completed, users can build their own ChatGPT-like SMS application using Python and Twilio.