Question: I'm looking for a solution that can assist me with research by providing cited sources and answers from PDF files.

If you're looking for a tool to help you with research, giving you cited sources and answers from PDFs, ChatPDF is a great option. This AI-based tool lets you upload documents and ask questions, and it'll give you a detailed explanation with references to the source material. It works in multiple languages and supports many types of PDFs, so it's good for students, researchers and professionals.

Another useful tool is PDF GPT, which has abilities like summarization, question answering, translation, citation and search. It works in more than 90 languages and with a variety of documents, including books and research papers. A free version and a Pro version costing $6 per month means PDF GPT can save you a lot of time and effort, according to 26% of users.

If you want to analyze a document more deeply, check out ChatDOC. In addition to summarizing and answering questions about PDFs, it can handle DOC and EPUB files, too. It can provide detailed AI analysis, image analysis and even explanations of math formulas. A browser extension makes it easy to upload files, and encryption protects your data. ChatDOC is good for students and professionals.

Last, Coral AI has a variety of abilities, including summarization, question answering with citations, translation and generation of a study guide. It works in more than 90 languages and with many types of documents, so it's good for quick analysis and productivity. Coral AI can free up 10-15 hours a week for you, so it can dramatically improve your research productivity.