A GPT-3 powered telephone chatbot has been created using Twilio Autopilot, Twilio Functions, and the OpenAI API. The chatbot is able to understand user input and respond with a generated completion from GPT-3. The OpenAI API provides an endpoint for creating completions, which are used by the Twilio Function to generate responses. The chatbot's functionality can be customized using various parameters available in the OpenAI API, such as temperature, max_tokens, and n. The completed code is provided, which requires the Axios npm module and sets up the environment variable OPENAI_API_KEY. The chatbot can be tested by calling the Twilio number and interacting with it to hear a short conversation about the Moon that was had with the GPT-3 bot.