# FileAI > Private document workspace that answers questions from your files with citations you can open — grounded in your documents, never invented. FileAI reads contracts, reports, research, and policies and answers questions in plain English. Every answer carries numbered citations that open the exact source passage, so claims can be verified rather than trusted. Files are stored in private, encrypted storage, are not used to train models unless the user opts in, and deletion removes the provider copies. Two modes: Fast (streamed answers in seconds) and Deep (careful multi-document reasoning). Supported formats: PDF, DOCX, PPTX, TXT, MD, JSON, HTML. ## Core pages - [FileAI — home](https://fileai.pro/): Ask your documents and get answers with citations you can open. - [Pricing](https://fileai.pro/pricing): Plans and the free tier — start with one document, no card required. - [FAQ](https://fileai.pro/faq): How citations work, hallucination, data privacy and deletion, Fast vs Deep mode. - [ChatPDF alternative](https://fileai.pro/alternatives/chatpdf): How FileAI compares for private, verifiable document Q&A. - [About](https://fileai.pro/about): Why FileAI grounds every answer in a citation. - [Contact](https://fileai.pro/contact): Get in touch with the FileAI team. - [Privacy & retention](https://fileai.pro/privacy): How uploads are stored, used, and deleted. ## Use cases - [AI contract analysis you can verify](https://fileai.pro/use-cases/contract-analysis): Analyze contracts with AI that cites the exact clause. Ask about termination, indemnity, and renewal across agreements — grounded in your files and kept private. - [Read and compare research papers with AI](https://fileai.pro/use-cases/research): Chat with papers and reports, compare methods across studies, and pull structured findings — every answer cites the passage it came from. Private by default. - [Query policies, standards, and regulations with AI](https://fileai.pro/use-cases/compliance): Turn policies, standards, and regulations into a workspace your team can ask. Answers cite the exact section and admit when the documents are silent. Private by design. ## Blog - [Extracting Data from PDFs into a Table with AI (Without Retyping Anything)](https://fileai.pro/blogs/extracting-data-from-pdfs-into-a-table-with-ai-without-retyping-anything): How to extract data from a PDF into a table with AI: a repeatable workflow for clean rows, consistent columns, and citations you can open and verify. - [Unlocking the Potential of File Reading AI: Exploring Use Cases for FileAI](https://fileai.pro/blogs/unlocking-the-potential-of-file-reading-ai-exploring-use-cases-for-fileai): FileAI represents a leap forward in how we interact with and utilize data contained within files. By automating document processing, data extraction, content management, - [Enhancing Legal and Compliance Operations with FileAI](https://fileai.pro/blogs/enhancing-legal-and-compliance-operations-with-fileai): FileAI is transforming the landscape of legal and compliance operations by automating document processing, enhancing data extraction, and improving accuracy. By leveragin - [Advancing Research and Academia: The Impact of FileAI on Document Processing](https://fileai.pro/blogs/advancing-research-and-academia-the-impact-of-fileai-on-document-processing): FileAI is transforming research and academia by automating document processing, enhancing data extraction, and supporting academic writing. By leveraging AI, researchers - [A Step-by-Step Guide to Using FileAI for Document Analysis](https://fileai.pro/blogs/a-step-by-step-guide-to-using-fileai-for-document-analysis): FileAI is a powerful tool designed to make document analysis and processing effortless. By following this guide, you can easily upload your files and start querying them - [Revolutionizing Finance and Accounting: How FileAI Transforms Document Processing](https://fileai.pro/blogs/revolutionizing-finance-and-accounting-how-fileai-transforms-document-processing): FileAI excels in finance and accounting by automating document processing, enhancing compliance, and improving data management by leveraging the po - [Enhancing Compliance in Construction: Leveraging FileAI for Worker Regulations](https://fileai.pro/blogs/enhancing-compliance-in-construction-leveraging-fileai-for-worker-regulations): In the construction industry, compliance and safety are non-negotiable. FileAI offers a powerful solution for managing the complexities of regulatory compliance, enhancin - [Ai assistant for writing](https://fileai.pro/blogs/ai-assistant-for-writing): Enter the AI assistant for writing—a revolutionary tool designed to enhance creativity, boost productivity, and simplify the writing process. - [Best AI PDF Assistant: Meet FileAi](https://fileai.pro/blogs/best-ai-pdf-assistant-meet-fileai): FileAi combines cutting-edge artificial intelligence with a user-friendly interface to enhance productivity and streamline document management. - [How to Analyze a Contract with AI (and Verify Every Clause)](https://fileai.pro/blogs/how-to-analyze-a-contract-with-ai-and-verify-every-clause): A practical guide to AI contract analysis: ask questions across your agreements and verify every answer against the exact clause — privately. - [Why AI Hallucination on Documents Happens — and How Citations Fix It](https://fileai.pro/blogs/why-ai-hallucination-on-documents-happens-and-how-citations-fix-it): AI hallucination on documents comes from answering from memory, not your file. Learn why it happens and how grounded retrieval and citations fix it. - [How to Chat with a PDF and Actually Trust the Answer](https://fileai.pro/blogs/how-to-chat-with-a-pdf-and-actually-trust-the-answer): Chat with PDF citations that open the exact source line. A practical workflow to verify AI answers from any PDF — and pick a tool you can trust. - [The Best ChatPDF Alternatives for Confidential Documents (2026)](https://fileai.pro/blogs/the-best-chatpdf-alternatives-for-confidential-documents-2026): Looking for a private ChatPDF alternative for confidential documents? A 2026 buyer's guide: the categories, the honest tradeoffs, and 10 questions to ask. - [How to Compare Two Research Papers with AI (Without Trusting It Blindly)](https://fileai.pro/blogs/how-to-compare-two-research-papers-with-ai-without-trusting-it-blindly): How to compare two research papers with AI: a step-by-step workflow to align methods, samples and results - with citations you can open and verify. - [Is It Safe to Upload Confidential Documents to AI Tools?](https://fileai.pro/blogs/is-it-safe-to-upload-confidential-documents-to-ai-tools): Is it safe to upload confidential documents to AI tools? What really happens to your file, the five risk vectors that matter, and how to decide per document.