Three Sigma is an AI research tool that enables rapid document searching and time-saving information retrieval. Its advanced search capabilities allow for quick and easy identification of desired information, and it can answer any question. Three Sigma can search entire folders and supports batch searching. It also features a ChatGPT plugin, enabling users to engage in free-form discussions without needing specific documents. Three Sigma's AI technology further supports the parsing of charts and tables, providing a more convenient user experience.