ChatPDF
8.2#1 in ai pdf toolsFrom $89.99 a yearFree planAndroidiOSWebAPI
VisitChatPDF vs PDF.chat
What both publish
| Fact | ChatPDF | PDF.chat |
|---|---|---|
| API | The backend API supports uploading PDFs or adding them from public URLs, then querying them to build custom PDF chatbots. | The public API is a REST interface for document upload, OCR, polling jobs, page-cited chat, history retrieval and format downloads. |
| API limits | API documentation limits each PDF to 2,000 pages or 32 MB. | Files of five pages or fewer return inline, while larger jobs are asynchronous and require polling; paid plans raise per-file caps. |
| OCR | The iOS listing says the app extracts text from scanned documents and images through OCR. | Scanned and photographed PDFs are processed with OCR before chatting. |
ChatPDF plans
- FreeFree
- ChatPDF Plus monthly$14.99 a month
- ChatPDF Plus yearly$89.99 a year
- ChatPDF PlusPriced on request
PDF.chat plans
- FreeFree
- Small pack$5, paid once
- Starter$5 a month
- Medium pack$15, paid once
- Pro$19 a month
- Large pack$40, paid once
Pick ChatPDF if…
ChatPDF suits students, researchers, and professionals who need to ask questions about or summarize document collections. Its citations, file-sharing controls, and API may also suit people building document-based workflows.
Pick PDF.chat if…
It suits readers who want to question documents and check answers against page citations, including scanned files. The API is also relevant to developers needing document ingestion and page-level responses.