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Side-by-side features, use cases and pricing — because the right pick depends on your job and budget, not just the ranking.

15Minutes logo
15Minutes
✓ verifiedPaid

Library of short book summaries, analyses, and audiobooks spanning thousands of nonfiction and fiction titles.

8.8K visits/mo533 saves
9.3K visits/mo
AskYourPDF logo
AskYourPDF
✓ verifiedFreemium

AI assistant to chat with, summarize and auto-fill PDFs, aimed at students and professionals extracting insights from documents.

226K visits/mo48K saves
AI Summary Generator logo
AI Summary Generator
✓ verifiedFreemium

Free-to-start AI text summarizer with adjustable length and bullet output, aimed at students and writers.

13K visits/mo
LightPDF AI logo
LightPDF AI
✓ verifiedFreemium

AI-powered online and desktop PDF suite to edit, convert, OCR, sign, organize and chat with documents across devices.

1.8M visits/mo12K saves
Pricing

No public pricing

Free: $0
Vial: $20
Inkwell: $40
Free: $0 (50 questions/day)
Premium: $11.99/mo (billed yearly)
Pro: $14.99/mo (billed yearly)

Free trial available

Weekly: $3.95/week
Monthly: $11.95/mo
Yearly: $6.74/mo (billed yearly)

No public pricing

Core features
  • Short book summaries and analysis
  • Summary PDFs and audiobooks
  • Personal library to save titles
  • Extensive category browsing
  • Coverage of thousands of books
  • Automatic transcription and summarization of TTRPG sessions
  • Customizable narrator and background music
  • Audio/video recap generation
  • Support for various audio formats
  • Option to proofread and edit the summary
  • Chat across multiple documents
  • Instant document summaries
  • AI PDF form auto-filling
  • Document library organization
  • Chrome extension and mobile apps
  • ChatGPT and Zotero integrations
  • One-click text summarization with word-count limits by plan
  • Paragraph or bullet-point summary formats
  • Choice of summary length (short, medium, long)
  • Advanced editor tool for tweaking output
  • Support for uploading Doc/PDF files
  • Multi-language summarization
  • Edit, convert and annotate PDFs
  • OCR and scanned-PDF enhancement
  • AI summarize and chat with documents
  • E-signature and document organization
  • Batch processing
  • Cross-platform: Web, Windows, Mac, iOS, Android
Use cases
  • Learning a book's key ideas in minutes
  • Listening to book summaries on the go
  • Deciding which full books to read
  • Studying nonfiction concepts efficiently
  • Creating recaps of Dungeons & Dragons, Pathfinder, or other TTRPG sessions
  • Sharing recaps with your party at the beginning of the next session
  • Immortalizing game sessions with captivating audio/video recaps
  • Summarizing long reports or papers
  • Extracting data from contracts
  • Auto-filling repetitive PDF forms
  • Studying and reviewing course material
  • Summarizing academic papers for literature reviews
  • Condensing long articles or blog posts
  • Creating quick overviews for study notes
  • Processing large volumes of text for content teams
  • Convert and edit PDFs online or on desktop
  • Summarize or ask questions about documents
  • OCR scanned PDFs into editable text
  • Sign and organize documents across devices
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