Autoquery GPT is a tool that allows users to ask questions to ChatGPT and receive answers automatically. It provides time-saving and performance benefits by allowing users to run queries and save the answers as a file in Excel, Word, TXT, or JSON format. Users need to use their own API key to access the features of the tool, which includes query blocks and query Excel for uploading large amounts of data. Autoquery GPT ensures that all queries made through the system are kept confidential and not shared.