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AI ChatDocs vs ChatPDF

Two fact sheets from our own research, side by side — pricing, platforms, API access and status re-checked by us rather than quoted from the vendors. AI ChatDocs publishes a starting price ($9.99); ChatPDF does not. Both have a free tier. Both ship a public API.

AI ChatDocsChat with PDFs, Word files, websites, and YouTube videos, then get sourced answers instead of skimming.ChatPDFAsk questions about PDFs, documents and videos

Side by side

FactAI ChatDocsChatPDF
CategoryChat with Documents & PDFPDF Tools
Pricing modelFreemiumFreemium
Starts at$9.99 month—
Public APIYesYes
PlatformsWeb, APIWeb, macOS, API
Company—ChatPDF GmbH
Launched—2023
Last verifiedSep 1, 2026Sep 6, 2026

What our research says

AI ChatDocs

AI ChatDocs works if your main need is asking questions across a handful of PDFs or a website instead of reading them end to end. The page and message caps per plan mean heavy users of long documents will hit the ceiling faster than the price alone suggests.

Pros

  • Handles more than PDFs: websites, sitemaps, and YouTube videos as sources too
  • Free tier to test before paying
  • API available on higher plans for custom integration
  • Message and page limits are stated clearly per plan

Cons

  • No company name or location disclosed anywhere on the site
  • Listed prices are shown as discounted from a higher list price, so confirm the actual renewal cost
  • Workspace page limits (200-4,000 pages) cap how much you can load per plan

ChatPDF

The quickest way to interrogate one long PDF without building retrieval yourself, and the page-level citations are what keep it honest. But ChatGPT and Claude now read PDFs natively, so ChatPDF only earns its subscription if you need those citations, the multi-file view, or the API.

Pros

  • answers cite specific pages, so you can check them instead of trusting them
  • handles Word, PowerPoint, Markdown and text files, not only PDF
  • REST API supports streaming and multi-turn conversations
  • free tier works with no account and no card

Cons

  • two documents a day on free runs out fast during real research
  • Plus pricing is not published anywhere on the site
  • no team plan, SSO or shared document library
  • hard per-file limit of 2,000 pages or 32 MB

Which one fits

Choose AI ChatDocs if you need

  • Anyone who needs quick answers from a batch of PDFs instead of reading them fully
  • Users who also want to query a website or a YouTube video's content

Choose ChatPDF if you need

  • students and researchers pulling verifiable quotes out of long papers
  • checking claims inside a contract or report you did not write
  • developers wanting a hosted PDF-Q&A endpoint instead of rolling their own RAG stack

More comparisons

Browse all Chat with Documents & PDF →