ChatPDF
ChatPDF lets you ask questions and get instant answers from PDF, Word, and PowerPoint files. See 2026 pricing from free to $15/month and alternatives.
About ChatPDF
What is ChatPDF (2026 update)
ChatPDF is an AI tool that lets you upload a document and ask it questions in plain language instead of scrolling or searching manually. It is built for students, researchers, and professionals who need quick answers, summaries, or explanations pulled out of long PDFs and similar files.
What is new in 2026
ChatPDF has expanded well past single-PDF chat. It now supports Word, PowerPoint, Markdown, and text files alongside PDF, plus PPTX and ePub on its higher tiers, and added YouTube video chat so you can ask questions about a video’s content the same way you would a document. The 2026 version also added multi-file folders for organizing related documents together, AI-generated flashcards and slides, an AI Writer and AI Detector, mobile and desktop apps, and a backend API for developers who want to build document chat into their own product. Page limits have grown too, with the top plan now handling PDFs up to 2,000 pages.
Key features
- Instant, source-grounded answers to questions about an uploaded document
- Automatic summaries of long PDFs, Word docs, or slide decks
- Multi-document chat, letting you ask questions across several files in one folder
- Support for PDF, Word, PowerPoint, Markdown, text, PPTX, and ePub files
- YouTube video chat for asking questions about video content
- Mobile app, desktop app, and a backend API for developers
Pricing in 2026
ChatPDF runs a three-tier model: a free plan for occasional use, and two paid tiers for heavier document work.
| Plan | Price | What you get |
|---|---|---|
| Free | Free | 2 PDFs per day, up to roughly 120 pages per PDF, about 50 questions per document, no account required |
| Plus | $5/month | Up to 50 PDFs per day, roughly 500 pages per PDF, multi-document folders |
| Max | $15/month | Up to 500 PDFs per day, PDFs up to 2,000 pages, higher daily question limits |
Reported figures for exact daily question caps and file size limits vary slightly across third-party review sites, so confirm the current numbers on ChatPDF’s own pricing page before budgeting for the Plus or Max plan.
Who should use it
ChatPDF fits students working through textbooks or research papers, professionals who need to pull specific answers out of contracts or reports, and small teams that want to query several related documents at once through folders. The free plan is enough for occasional lookups, but anyone reading long documents daily will hit the 2-PDF cap quickly and need Plus, while teams running research or support workflows through the API will want to budget for Max or a custom arrangement instead.
Limitations and alternatives
Because ChatPDF answers are generated from the document text, accuracy depends on how the PDF is structured, scanned image-only PDFs without selectable text can produce weaker answers unless they support OCR. The free plan’s page and question limits also make it a trial tier more than a daily-use option for serious research, and very long documents near the top page limit can still lose some nuance in a single summary compared to reading the source directly.
Alternatives worth comparing: NotebookLM from Google, which adds source citations and audio overviews for research use; Humata, aimed more at legal and technical document analysis; and Sider, a broader AI assistant that includes PDF chat alongside other browsing and writing tools.
Frequently asked questions
Is ChatPDF free?
Yes, the free plan allows 2 PDFs per day with no account required, though page and question limits are tighter than the paid plans.
How much does ChatPDF Plus cost?
ChatPDF Plus costs $5/month and raises the daily PDF limit to around 50 documents with a higher per-PDF page limit.
Can ChatPDF handle files other than PDF?
Yes, as of 2026 ChatPDF supports Word, PowerPoint, Markdown, text, PPTX, and ePub files, plus a separate feature for chatting with YouTube videos.
Does ChatPDF have an API?
Yes, ChatPDF offers a backend API for developers who want to build document question-answering into their own application.
Information last verified: September 2026.
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