PDF.ai Alternatives

If you're looking for a PDF.ai alternative, ChatPDF is another AI-based information extraction system. You can upload PDFs and ask questions, getting answers and summaries along with source citations. It can handle multi-file conversations and PDFs in any language, so it's good for students, researchers and professionals.

Another contender is ChatPDF, which uses GPT-4 technology so you can summarize and interact with hundreds of PDF files in bulk. The service is available in several tiers, including a relatively cheap option, and works in more than 95 languages. It also prioritizes data protection and offers a 30-day money-back guarantee.

You could also try ChatDOC, which handles not just PDFs but also DOC, DOCX, SCAN and other file formats. It offers immediate answers, detailed AI analysis and math formula explanations. A browser extension lets you upload PDFs and get quick answers, and it offers a free tier with file size and page limits.

If you want something more flexible, Sharly offers AI summarization and chat abilities along with document organization tools. It's designed for researchers, project managers and lawyers who need to digest research papers or contracts. With customizable AI personalities and strong data protection, Sharly is a PDF.ai alternative worth considering.