ChatPDF records 1,044,477 monthly visits with -3.7% month-over-month growth and Freemium pricing. Velin records 0 monthly visits with 0% growth and Paid pricing.
Chat with any PDF, video, or website and get cited answers in seconds
Verified answers from your own documents, with citations instead of hallucinations
| Dimension / Metric | | |
|---|---|---|
| Official Domain | chatpdf.com | velin.ai |
| Pricing Model | Freemium | Paid |
| Monthly Visits | 1.04M (1,044,477) | 0 (0) |
| MoM Traffic Delta | -40.47K (-3.7%) | 0 (0%) |
| Primary Market & Share | 🇺🇸 United States (9.6%) | 🌐 Global (—) |
| Direct Visits / mo | 457.79K | 0 |
| User Rating | 4.2 | 4 |
| 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.
Verified answers from your own documents, with citations instead of hallucinations
Upload documents securely and Velin processes and organises them into a ready-to-query knowledge base.
Ask questions in plain English and Velin searches your entire library to pinpoint the exact facts and context you need.
Summaries and insights are generated strictly from your files and include citations back to the original sources.
Vision support lets Velin read charts and images, and web search grounding extends answers beyond your files when needed.
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.
Free / Open-sourceReal-time AI answer engine and research workspace combining live web citations with frontier reasoning models.
Free / Open-sourceReal-time AI answer engine and research workspace combining live web citations with frontier reasoning models.
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.
Free / Open-sourceTurn any document into AI-ready context with agentic parsing and extraction
Free / Open-sourceTurn any document into AI-ready context with agentic parsing and extraction
Includes robust developer APIs for custom document workflows, but free tier limits document page counts.
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.
Free / Open-sourcePrivate AI that answers from your own documents, on Mac and Windows
Free / Open-sourcePrivate 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.
Clean interface for complex technical document summarization, but offers fewer advanced export formatting options.
Free / Open-sourceChatbots that answer from your content, not from guesses
Free / Open-sourceChatbots that answer from your content, not from guesses
