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Alternatives · AI Research

PDF.ai alternatives

As of Nov 13, 2026, the best PDF.ai alternative for most people is ChatPDF (2.8 GPA), second in our ranking of AI research tools. It's also the best free one.

PDF.ai compared with 5 alternatives: ChatPDF, AskYourPDF, Humata, Docalysis and ChatDOC.

PDF.ai has a free plan. Paid plans start at $10 per month, billed yearly. 4 of the 5 alternatives are free or have a free plan. One more offers a free trial.

Listings checked up to Nov 12, 2026 · Where the facts come from

Black Friday: is there a PDF.ai sale?

At a glance

ToolPriceFree planRuns on
PDF.aiThis toolFree plan · from $10/moYesWeb, Browser extension
ChatPDFFree plan · from $89.99/yrYesWeb, macOS, Windows, iOS, Android
AskYourPDFFree plan · from $11.99/moYesWeb, iOS, Android, Browser extension
HumataFree plan · from $9.99/moYesWeb
DocalysisFree plan · from $14/moYesWeb
ChatDOCFree trial · from $89.9/yrTrial onlyWeb, Browser extension

Price against what you get

PDF.ai starts at $10 a month and scores 2.7 out of 4 on features, ease of use and platforms. 1 of the 5 alternatives on this chart scores higher and starts lower: ChatPDF.

Humata and ChatDOC start lower without scoring higher.

Features, ease of use and platforms, averaged

C2.0B3.0A4.0Free$1$2$5$10$20$50More for lessCosts more, scores moreCosts less, scores lessCosts more, scores lessPDF.aiChatPDFAskYourPDFHumataDocalysisChatDOC

What paid plans start at, a month (each step along is roughly double) →

  • The best score at each price
  • Has a free plan
  • No free plan
The full chart of AI research tools, and the best at every price

How each one differs from PDF.ai

  1. ChatPDF

    Ask questions about PDFs and get answers with citations

    • ChatPDF starts at $89.99 per year or $14.99 per month (US App Store in-app purchase).
    • ChatPDF also lists macOS, Windows, iOS and Android apps.
    • ChatPDF lists no browser extension, which PDF.ai has.
    • ChatPDF also covers AI search and citations.
    • ChatPDF does not cover documents, which PDF.ai does.

    Suits: Students and researchers who want quick answers from a paper or textbook chapter

    ChatPDF vs PDF.aiChatPDF pricing and details

  2. AskYourPDF

    Chat with PDFs and other documents and get cited answers

    • AskYourPDF starts at $11.99 per month, billed yearly ($14.99 billed monthly).
    • AskYourPDF also lists iOS and Android apps.
    • AskYourPDF also covers citations.
    • AskYourPDF does not cover documents, which PDF.ai does.

    Suits: Students and researchers who want cited answers from long papers and books

    AskYourPDF vs PDF.aiAskYourPDF pricing and details

  3. Humata

    Document Q&A with cited answers across your uploaded files

    • Humata starts at $9.99 per month, billed monthly (covers up to 3 users).
    • Humata lists no browser extension, which PDF.ai has.
    • Humata also covers citations.
    • Humata does not cover documents, which PDF.ai does.

    Suits: Asking questions across many long PDFs and getting cited answers

    Humata vs PDF.aiHumata pricing and details

  4. Docalysis

    Chat with PDF, text, CSV and Word files and get answers from them

    • Docalysis starts at $14 per month, billed monthly.
    • Docalysis lists no browser extension, which PDF.ai has.
    • Docalysis does not cover research, which PDF.ai does.

    Suits: Analysts, lawyers and accountants who need answers from long documents

    Docalysis vs PDF.aiDocalysis pricing and details

  5. ChatDOC

    Chat with PDFs and documents, with answers traced to the source

    • ChatDOC starts at $89.9 per 360 days (a 30-day plan is also sold).
    • ChatDOC has no free plan, only a free trial, unlike PDF.ai.
    • ChatDOC also covers citations.
    • ChatDOC does not cover documents, which PDF.ai does.

    Suits: Checking each AI answer against the passage it came from

    ChatDOC vs PDF.aiChatDOC pricing and details

Limits worth knowing in PDF.ai

  • Monthly-billing prices were not readable; the prices shown are those billed yearly.
  • The Ultimate plan's API is for non-commercial use only; commercial use needs the credit add-on.
  • The chatbot widget is a separate paid plan.
PDF.ai pricing and details

Common questions

What are the alternatives to PDF.ai?

The alternatives to PDF.ai in this directory are ChatPDF, AskYourPDF, Humata, Docalysis and ChatDOC. Each one has a side-by-side comparison with PDF.ai.

Is there a free alternative to PDF.ai?

Yes. ChatPDF, AskYourPDF, Humata and Docalysis have a free plan alongside paid ones.

Which PDF.ai alternatives work on Windows?

The PDF.ai listing does not include a Windows app. ChatPDF lists one.

Which PDF.ai alternatives work on macOS?

The PDF.ai listing does not include a macOS app. ChatPDF lists one.

When were these prices checked?

Each listing shows its own date. On this page they run from Oct 5, 2026 to Nov 12, 2026. Vendors change prices without notice, so confirm on their site before you buy.