Question: I'm looking for an AI-powered tool that can extract key information from PDFs, YouTube videos, and text files - do you know of any options?

ChatDox is a general-purpose AI system that can handle a broad range of documents, including PDFs, DOCX, TXT, CSV files, YouTube videos, audio files and video files. It's multilingual, can have custom categories, and can be integrated with an application programming interface so you can read documents yourself. That makes it good for students, researchers, teachers, lawyers and HR people who need to extract information from a variety of sources.

Another option is aiPDF, which offers similar abilities and adds optical character recognition technology to read text from PDFs that aren't machine-readable. aiPDF can handle a lot of document types, including financial reports, academic papers and ebooks, and offers features like instant answers, detailed references and support for multiple languages. It's good for people who need to summarize and extract information from a lot of documents.

ChatWithPDF is a lightweight tool for summarizing and interacting with PDFs and YouTube videos. It comes with a Chrome extension to plug it into your browser and offers fast, accurate answers. It's good for researchers, professionals and students who want to speed up their research and learning.

If you want a more powerful tool, check out ChatDOC. It can handle a lot of document types, including PDF, DOC, DOCX and EPUB, and offers features like in-depth AI analysis, image analysis with GPT-4 integration, and multi-document chat. It's good for students and professionals who need to quickly analyze and summarize a lot of documents.