Skip to content
ToolGPA

ChatDOC alternatives · AI Research

Free alternatives to ChatDOC

ChatDOC has no free plan. 51 of the 69 other AI research tools in this directory are free or have a free plan.

ChatDOC is a paid product with a free trial, starting at $89.9 per 360 days (a 30-day plan is also sold). 10 of them have no paid plan at all; the rest pair a free plan with paid ones.

51 tools · Listings checked up to Nov 13, 2026 · Where the facts come from

The 12 closest to ChatDOC

  1. ChatPDF

    Ask questions about PDFs and get answers with citations

    What is free: 2 documents a day, usable without an account. A free account adds saved history and multi-file folders. Free files are capped at 120 pages or 10 MB.

    • ChatPDF starts at $89.99 per year or $14.99 per month (US App Store in-app purchase). ChatDOC starts at $89.9 per 360 days (a 30-day plan is also sold).
    • ChatPDF has a free plan. ChatDOC does not, though it has a free trial.
    • Only ChatPDF lists macOS, Windows, iOS and Android apps.
    • Only ChatDOC lists a browser extension.
    ChatPDF vs ChatDOCChatPDF pricing and details

  2. AskYourPDF

    Chat with PDFs and other documents and get cited answers

    What is free: 1 document a day of up to 100 pages and 15 MB, with 50 questions and 3 conversations a day on the GPT-5 Mini model.

    • AskYourPDF starts at $11.99 per month, billed yearly ($14.99 billed monthly). ChatDOC starts at $89.9 per 360 days (a 30-day plan is also sold).
    • AskYourPDF has a free plan. ChatDOC does not, though it has a free trial.
    • Only AskYourPDF lists iOS and Android apps.
    AskYourPDF vs ChatDOCAskYourPDF pricing and details

  3. Humata

    Document Q&A with cited answers across your uploaded files

    What is free: 1 user and 60 free pages a month with basic features. The homepage also limits it to 10 answers.

    • Humata starts at $9.99 per month, billed monthly (covers up to 3 users). ChatDOC starts at $89.9 per 360 days (a 30-day plan is also sold).
    • Humata has a free plan. ChatDOC does not, though it has a free trial.
    • Only ChatDOC lists a browser extension.
    Humata vs ChatDOCHumata pricing and details

  4. Anara

    AI research assistant that cites the exact source passage

    What is free: a daily allowance of AI usage and uploads, files of up to 20 MB or 120 pages each, and the Zotero and Mendeley connectors. No credit card required.

    • Anara starts at $8 per seat / month, billed yearly ($10 billed monthly). ChatDOC starts at $89.9 per 360 days (a 30-day plan is also sold).
    • Anara has a free plan. ChatDOC does not, though it has a free trial.
    • Only Anara lists macOS and iOS apps.
    • Anara also covers AI search, web clipper and AI agents.
    Anara vs ChatDOCAnara pricing and details

  5. Docalysis

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

    What is free: 50 question credits and 600 uploaded pages a month, files up to 5 MB and 150 pages each.

    • Docalysis starts at $14 per month, billed monthly. ChatDOC starts at $89.9 per 360 days (a 30-day plan is also sold).
    • Docalysis has a free plan. ChatDOC does not, though it has a free trial.
    • Only ChatDOC lists a browser extension.
    • Docalysis also covers documents.
    Docalysis vs ChatDOCDocalysis pricing and details

  6. PDF.ai

    Chat with PDFs and parse them through an API

    What is free: Hobby: 1 PDF, 100 questions a month, 10 MB files and OCR on 2 pages per file.

    • PDF.ai starts at $10 per month, billed yearly. ChatDOC starts at $89.9 per 360 days (a 30-day plan is also sold).
    • PDF.ai has a free plan. ChatDOC does not, though it has a free trial.
    • PDF.ai also covers documents.
    • ChatDOC also covers citations.
    PDF.ai vs ChatDOCPDF.ai pricing and details

  7. Paperguide

    AI research platform for literature and systematic reviews

    What is free: 2,000 AI credits and 20 AI searches a month, 500 MB of reference storage, extraction tables of up to 10 papers and 5 columns, and 10 Search API requests a month.

    • Paperguide starts at $12 per seat / month, billed annually ($8 with the academic discount). ChatDOC starts at $89.9 per 360 days (a 30-day plan is also sold).
    • Paperguide has a free plan. ChatDOC does not, though it has a free trial.
    • Paperguide also covers AI search, AI agents and long-form writing.
    Paperguide pricing and details

  8. Evidence Hunt

    Medical literature search and chat with cited evidence

    What is free: Basic plan: free chats with low-cost models plus 3 pro-quality questions, PubMed search, history and 1 evidence signal.

    • Evidence Hunt starts at €16.5 per month, billed yearly. ChatDOC starts at $89.9 per 360 days (a 30-day plan is also sold).
    • Evidence Hunt has a free plan. ChatDOC does not, though it has a free trial.
    • Only ChatDOC lists a browser extension.
    • Evidence Hunt also covers AI search.
    Evidence Hunt pricing and details

  9. Elicit

    AI research assistant for literature search and systematic reviews

    What is free: Basic plan: unlimited search over 138 million papers, unlimited paper summaries and chat with papers, Zotero import, and limited Research Agent and report usage.

    • Elicit starts at $49 per user / month, billed annually ($11 on academic pricing). ChatDOC starts at $89.9 per 360 days (a 30-day plan is also sold).
    • Elicit has a free plan. ChatDOC does not, though it has a free trial.
    • Elicit also covers AI search and AI agents.
    • ChatDOC also covers chat assistant.
    Elicit pricing and details

  10. Consensus

    AI search engine that answers questions from peer-reviewed papers

    What is free: Basic paper search across 400M+ papers, plus 10 Pro messages and 3 Deep Searches per month. Paid tiers are Pro, Deep, Team and Enterprise; their prices could not be read.

    • Consensus has a free plan. ChatDOC does not, though it has a free trial.
    • Only Consensus lists an Android app.
    • Only ChatDOC lists a browser extension.
    • Consensus also covers AI search and AI agents.
    Consensus pricing and details

  11. Semantic Scholar

    Free AI-powered search engine for scientific literature

    What is free: Everything. There is no paid plan.

    • Semantic Scholar is free. ChatDOC starts at $89.9 per 360 days (a 30-day plan is also sold).
    • Semantic Scholar has a free plan. ChatDOC does not, though it has a free trial.
    • Semantic Scholar also covers AI search.
    • ChatDOC also covers chat assistant.
    Semantic Scholar pricing and details

  12. SciSpace

    AI research platform for literature review and reading papers

    What is free: Third-party listings report a free tier, but its current limits could not be read: SciSpace's site turned automated readers away, and the archived pricing data covers paid plans only.

    • SciSpace starts at $12 per month, billed annually ($20 billed monthly). ChatDOC starts at $89.9 per 360 days (a 30-day plan is also sold).
    • SciSpace has a free plan. ChatDOC does not, though it has a free trial.
    • Only SciSpace lists an iOS app.
    • SciSpace also covers AI search and AI agents.
    SciSpace pricing and details

39 more that are free or have a free plan

All 51 in one table

Common questions

Is there a free alternative to ChatDOC?

Yes. ChatPDF, AskYourPDF, Humata, Anara, Docalysis, PDF.ai, Paperguide, Evidence Hunt and 43 more are free or have a free plan.

Does ChatDOC have a free plan?

ChatDOC has no free plan. ChatDOC is a paid product with a free trial, starting at $89.9 per 360 days (a 30-day plan is also sold).

When was this checked?

Each listing shows its own date. On this page they run from Oct 5, 2026 to Nov 13, 2026. Vendors change prices and plans without notice, so confirm on their site before you buy.

This page is built from the listings. A tool is here because its listing says so, and the order is how close each is to ChatDOC: the alternatives its listing names first, then the tools that share the most features with it.