Question: I need a solution that allows me to chat with multiple PDFs at once and export the conversation data in different formats.

If you need a tool to chat with multiple PDFs at once and export conversation data in different formats, PDF Pals is a top contender. The macOS app uses large AI models and OCR technology to analyze your PDFs without having to upload them. It can handle multiple-document chats and export conversation data in HTML, Markdown or JSON formats, which makes it a good choice for researchers, lawyers and developers.

Another strong contender is ChatPDF, which offers an AI-powered information retrieval system that can handle multiple PDFs and respond with answers and summaries. It's good for research papers, academic papers, legal contracts and financial reports. It can handle multiple languages and can cite the original sources in its answers, too, which makes it a good tool for students and professionals.

If you want more integration options, AskYourPDF could be the tool for you. It uses ChatGPT to let you have conversational interactions with PDFs, and it offers a Chrome extension for easy integration. It also offers a history of conversations for learning and document management, so it can be a good way to improve your productivity and quickly extract information from long documents.

Last, aiPDF offers a more general-purpose tool for interacting with PDFs, web articles, YouTube videos and podcasts. It can handle multiple languages and includes OCR technology, so you can extract information and get detailed summaries from your documents. It offers several pricing tiers, including a free option, so it should be useful for a variety of situations.