ChatPDF.so is an AI-powered tool that harnesses the capabilities of GPT-4 to interact with and extract information from PDF documents. Users can upload multiple PDFs and engage in a conversational question-and-answer format to receive answers in natural language, complete with citations. The tool also offers summarization features for lengthy documents, making it a valuable asset for professionals and students who need to sift through extensive material efficiently. With the ability to handle various languages and shareable chat links for team collaboration, ChatPDF.so is designed to streamline workflows, enhance research, and improve study practices by making data retrieval and comprehension quicker and more accessible.