AskYourPDF vs ChatPDF

AskYourPDF

• Students and researchers who want cited answers from long papers and books
• Very long files: Pro accepts documents of up to 6,000 pages
• Zotero users who want summaries and document chat inside their library
• Site owners who want a support chatbot trained on their own pages and files

ChatPDF

• Students and researchers who want quick answers from a paper or textbook chapter
• Asking questions across several files kept in one folder
• Trying a document chat tool without creating an account
• Turning course material into flashcards or slides

AskYourPDF

• The free plan covers 1 document a day, capped at 100 pages and 15 MB, and uses GPT-5 Mini only.
• Knowledge Bases, OCR and Chrome extension access appear only in the benefits of the paid plans.
• Claude 4.5 Sonnet, Claude 4.5 Opus and Gemini 2.5 Pro need credits on every paid plan; Premium includes 10 and Pro 30.
• The terms say all sales are final, with no refunds or pro-rata credits.

ChatPDF

• The website shows Plus prices only in an upgrade dialog and sets them per visitor; the prices here are US App Store in-app purchases, and web checkout may differ.
• The free plan covers 2 documents a day, and the site's limits cap free use at 20 messages a day and files of 120 pages or 10 MB.
• AI Research summaries are built from abstracts, and chatting with a full paper works only for open-access papers.
• The best model is reserved for Plus; ChatPDF says it routes queries between GPT-4o and GPT-4o-mini.

AskYourPDF

Chat with documents

Upload a PDF, DOCX, EPUB or TXT file, or paste a URL, and ask questions in plain language. Each answer cites the page it came from, and the site says it works in more than 100 languages.

Knowledge Bases

Premium and Pro group documents into a Knowledge Base, so that one question draws a single cited answer from every file in it.

Choice of AI models

The free plan runs on GPT-5 Mini. Paid plans add GPT-5, GPT-5.2 and Gemini 2.5 Flash, while Claude 4.5 Sonnet, Claude 4.5 Opus and Gemini 2.5 Pro draw on credits.

AI Agent for websites

Trains a chatbot on your website and uploaded files and embeds it with one line of code. Visitors can open a support ticket when the agent cannot answer.

AI form filler

Fills fillable and non-fillable PDF forms using data taken from another PDF, a text file or pasted content.

Developer API

Adds documents by upload or URL and answers questions about them. API plans are separate: free with 100 messages, or $49.99 a month for 6,000 messages and 60,000 pages.

ChatPDF

Chat with documents

Ask questions about a PDF, Word, PowerPoint, Markdown or text file with the chat and the document side by side. Clickable citations scroll to the passage an answer came from.

Multi-file folders

Put files in a folder to ask questions across all of them in one conversation. Folders and saved chat history need a free account.

AI Research

Ask a question to find academic papers and get a summary with citations, built from the papers' abstracts. Filters narrow results to recent or influential work.

YouTube and website chat

Paste a YouTube or website link to ask questions about it. Video answers include clickable timestamps and an interactive transcript.

Flashcards, slides and writing

Makes flashcards that export to Anki, Quizlet, Brainscape or CSV, and slides that export to PowerPoint. The AI Writer drafts text with citations and exports to Word or Markdown.

Developer API

A backend API adds PDFs by URL or file upload and answers questions about them, with optional page references. API files are limited to 2,000 pages or 32 MB.

AskYourPDF

• Free$0

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

• Premium$11.99

  per month, billed yearly; $14.99 billed monthly

  50 documents a day of up to 2,500 pages and 31 MB, 1,200 questions a day, Knowledge Bases, OCR, the Chrome extension and 10 credits.

• Pro$14.99

  per month, billed yearly; $19.99 billed monthly

  150 documents a day of up to 6,000 pages and 877 MB, longer replies, priority support and 30 credits.

• EnterpriseCustom

  Unlimited pages per document and unlimited questions, up to 1,000 documents a day and custom credits. Sold through sales.

ChatPDF

• Free$0

  2 documents and 20 messages a day, with files of up to 120 pages or 10 MB and folders of up to 5 files.

• Plus$14.99

  per month on the US App Store; $89.99 for the yearly plan

  Unlimited questions and documents, files of up to 2,000 pages or 150 MB, 50 PDFs per folder and the higher-quality model.

AskYourPDF

• Annual discount

  Up to 25% off with annual billing

  The pricing page labels annual billing as 25% off. Premium is $11.99 a month billed yearly against $14.99 billed monthly, and Pro is $14.99 against $19.99.

ChatPDF

• Annual discount

  About 50% off with the yearly plan

  On the US App Store the yearly Plus plan is $89.99 against $14.99 a month. That works out to about $7.50 a month, half the monthly rate.