ChatPDF is an AI tool that transforms PDFs into interactive chatbots. Upload any PDF document and ask natural language questions to get instant answers with page-level citations. The tool uses GPT-4o and GPT-4o-mini models with smart dynamic routing for optimal speed and accuracy. Features include multilingual support, side-by-side document viewing with clickable citations, and document sharing capabilities. Best for analyzing research papers, legal contracts, textbooks, manuals, and technical documents without manual searching or scrolling.
Who it's for
studentsresearchers
Pricing · freemium
checked Jul 22, 2026
Plan
Price
Includes
Free
$0 /mo
2 PDFs per day · 50 questions per PDF · Up to 120 pages per PDF · Up to 100 MB file size · No account required
Plus
$5 /mo
50 PDFs per day · 500 pages per PDF · Unlimited questions · Priority support
Max
$15 /mo
500 PDFs per day · 2000 pages per PDF · Unlimited questions · Enhanced features
AI-researched pricing — verify on the official site before subscribing.
Use it for
— Analyzing research papers and academic PDFs
— Legal document and contract review
— Extracting key information from long reports
— Summarizing textbooks and manuals
— Quick document lookup without manual searching
— Comparing information across documents
— Studying complex materials faster
Get the most out of it
01Use the free tier to test workflow compatibility before upgrading—2 PDFs daily with 50 questions each covers light research needs.
02Always verify critical answers by clicking citations to jump directly to source pages; avoid relying on ChatPDF for accuracy on inferential questions.
03For documents with tables, charts, or figures, manually review data-heavy sections as the tool struggles with image content inside PDFs.
04Avoid uploading confidential or sensitive materials since documents are processed through third-party LLM APIs; review privacy policy first.
05If you need multi-document analysis or documents over 500 pages, consider Google NotebookLM (free, unlimited) as a complementary tool.
