Question: I need a way to train a custom chatbot to answer questions based on specific PDF files - can you suggest a solution?

If you want to train a custom chatbot to answer questions based on particular PDF files, Documind is a good option. The AI-powered service lets you upload hundreds of PDFs, chat with multiple documents at once and build a chatbot you can put on a website. It's geared for students and professionals with a lot on their plates, with several pricing plans and a 30-day money-back guarantee.

Another option is ChatPDF. It uses the latest GPT-4 technology to rapidly summarize and chat with PDFs. You can upload a big list of PDFs, ask a question, and get text in response. The service supports more than 95 languages and has strong security protections, so it's a good option for anyone who needs to get information fast.

If you want something more flexible, try ChatDOC. The service can handle not just PDFs but also other word processing documents like DOC, EPUB and TXT. It can give you immediate answers, perform AI analysis and let you chat with multiple documents. With image analysis and citations, ChatDOC is more like an AI assistant you can trust to get what you need out of a document.

Last, AskYourPDF offers a conversational interface based on ChatGPT to chat with your documents. It's got a Chrome extension to integrate it into your browser and several pricing plans to accommodate different needs. The app can help you get more done by quickly finding information in long PDFs, so it's a good option to boost your productivity when it comes to managing documents.