Question: I'm looking for a tool that allows me to chat with multiple documents at once and get personalized summaries.

ChatPDF is an AI-based system designed to help you comprehend a variety of PDFs, including research papers, legal contracts and financial reports. It can handle multi-file chats, letting you group files into folders and have one conversation. ChatPDF also is good at summarizing documents and attributing quotes to original sources, so it's a good option for students, researchers and professionals.

Another option is ChatDOC, which can handle PDFs, DOCX and other documents. It can provide immediate answers to questions, more detailed AI analysis and multi-document chat. The tool also offers features like image analysis with GPT-4 integration and the ability to use your own custom model for more precise answers. It also offers a browser extension for uploading PDFs and encrypts files to protect your data.

If you want a more full-featured AI-native workspace, you might want to check out Otio. Otio can summarize and chat with documents using large AI models. It can automatically summarize documents, let you edit text with AI assistance, and work in more than 20 languages. It's geared for researchers, students and analysts who want to free up their time from document analysis and organization chores.

Last, Documind lets you set up a custom chatbot trained on your PDFs so you can ask questions and get answers directly from the documents. It can handle bulk uploads and multi-document chats, so it's good for students and professionals who have a lot to handle. Documind protects data and privacy, and offers a variety of pricing options depending on your needs.