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Ask questions of any PDF and get cited answers
Updated
ChatPDF is a web tool for asking questions about PDF documents in natural language. You upload a PDF and receive answers drawn from its content, which makes it useful for long reports, papers and manuals.
You upload a PDF, ChatPDF reads its text, and you ask questions in a chat. Free use is capped by file size, pages and questions per day, and the paid Plus plan raises or removes those limits.
Students, researchers and professionals who need quick answers from long PDFs.
ChatPDF Plus is listed at $19.99 per month in most recent third-party reviews, though other sources report different figures by platform, so confirm on the vendor pricing page. Free is limited to 2 PDFs per day.
SciSpace and Scite target academic literature, Causaly focuses on biomedical research, and Wokelo and Parallel are research tools. Humata is a close chat-with-PDF alternative.
Pricing Model
FREEMIUM
Starting Price
Contact vendor
Free Options
Free version
| Feature | Free | Plus |
|---|---|---|
| 2 PDFs per day | , | |
| 120 pages per file | , | |
| 50 questions per day | , | |
| 10 MB file size | , | |
| Unlimited questions | , | |
| Files up to 2,000 pages | , | |
| 32 MB per PDF | , | |
| Price per third-party reviews | , |
Other
Productivity
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API Types
SDK Availability
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Developer Features
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Compliance Standards
SOC 2 Type II
EnterpriseISO 27001
EnterpriseGDPR Compliant
GlobalHIPAA
HealthcarePCI DSS
FinanceCCPA
PrivacyFedRAMP
GovernmentCSA STAR
CloudDeployment & Data
Data Residency Options
Verify with vendor for your specific region requirements.
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