ChatPDF records 1,044,477 monthly visits with -3.7% month-over-month growth and Freemium pricing. Cluing records 11,227 monthly visits with -43.1% growth and Freemium pricing.
Chat with any PDF, video, or website and get cited answers in seconds
Knowledge layer that gives your AI the context it lacks
| Dimension / Metric | | |
|---|---|---|
| Official Domain | chatpdf.com | cluing.io |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 1.04M (1,044,477) | 11.23K (11,227) |
| MoM Traffic Delta | -40.47K (-3.7%) | -8.52K (-43.1%) |
| Primary Market & Share | 🇺🇸 United States (9.6%) | 🇺🇸 United States (50.1%) |
| Direct Visits / mo | 457.79K | 4.45K |
| User Rating | 4.2 | 3.9 |
| Supported Platforms | Website | Website |
Chat with any PDF, video, or website and get cited answers in seconds
Every response is anchored to your source document with clickable citations that scroll to the exact passage, so verification takes seconds instead of page-by-page searching.
Organize documents into folders and query many files in a single conversation to compare arguments, cross-reference findings, or study a whole syllabus at once.
Condense long papers, reports, and contracts into key takeaways, and translate or query documents in any language — including mixing a source language with a different question language.
Generate flashcards and slide decks from your material, and use the built-in AI writer and AI detector for drafting and checking academic text.
Knowledge layer that gives your AI the context it lacks
Save highlights and insights from webpages, PDFs, videos, social posts, newsletters, Kindle, and email using a browser extension or mobile capture.
Let AI suggest structure, group related insights, and use knowledge triggers and chat to keep your base tidy and searchable.
Feed your stored knowledge to any frontier model or custom agent via an AI Canvas and native MCP, so your context travels with you.
Build a common context space that both people and AI agents draw on for research, feedback, and collaboration.
SpecialistAnthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.
SpecialistAnthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.
SpecialistThe AI workspace where teams and agents get work done together
Free / Open-sourceCompletely free PDF reading and editing tool with AI assistant, though basic compared to dedicated platforms.
Free AI-powered PDF editor, converter and reader for every device
Free AI-powered PDF editor, converter and reader for every device
Combines full desktop PDF editing software with AI chat, but requires software installation for full features.
SpecialistTencent's AI knowledge steward for searching, reading, writing, and managing your own knowledge base.
SpecialistTencent's AI knowledge steward for searching, reading, writing, and managing your own knowledge base.
SpecialistA polished space for notes, tasks, and documents that follows you across every device.
SpecialistA polished space for notes, tasks, and documents that follows you across every device.
Includes robust developer APIs for custom document workflows, but free tier limits document page counts.
SpecialistAI agents that turn your own documents into summaries, mind maps and reports
SpecialistAI agents that turn your own documents into summaries, mind maps and reports
Strong multi-format document chat and form filling capabilities, but interface can feel slightly more cluttered.
Strong multi-format document chat and form filling capabilities, but interface can feel slightly more cluttered.
SpecialistPrivate AI that answers from your own documents, on Mac and Windows
SpecialistPrivate AI that answers from your own documents, on Mac and Windows
Great for comparing multiple documents and spreadsheets side by side, but smaller overall user community.
Great for comparing multiple documents and spreadsheets side by side, but smaller overall user community.
