ChatPDF records 1,044,477 monthly visits with -3.7% month-over-month growth and Freemium pricing. Surf records 116,252 monthly visits with -18.9% growth and Free, Pro, Max, API credits pricing.
Chat with any PDF, video, or website and get cited answers in seconds
Institution-grade crypto and equities intelligence, delivered through a chat-style AI analyst.
| Dimension / Metric | ||
|---|---|---|
| Official Domain | chatpdf.com | asksurf.ai |
| Pricing Model | Freemium | Free, Pro, Max, API credits |
| Monthly Visits | 1.04M (1,044,477) | 116.25K (116,252) |
| MoM Traffic Delta | -40.47K (-3.7%) | -27.18K (-18.9%) |
| Primary Market & Share | 🇺🇸 United States (9.6%) | 🇰🇷 South Korea (32.6%) |
| Direct Visits / mo | 457.79K | 88.81K |
| User Rating | 4.2 | 4.2 |
| 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.
Institution-grade crypto and equities intelligence, delivered through a chat-style AI analyst.
Ask questions about tokens, protocols, or equities in plain language and receive answers backed by visible sources rather than unsupported assertions.
Market prices, onchain events, SEC filings, and news are normalized into one structured layer so the model reasons over consistent inputs.
API, MCP server, CLI, and agent skills let teams wire Surf intelligence into their own agents, dashboards, and internal research workflows.
Purpose-built modules for tracking market-moving developments and for looking up structured context on projects and assets.
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-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.
AI trading indicators, real-trade orderflow and charts in one platform
AI trading indicators, real-trade orderflow and charts in one platform
Global macro data and AI research platform for smarter economic decisions
Global macro data and AI research platform for smarter economic decisions
Includes robust developer APIs for custom document workflows, but free tier limits document page counts.
AI investing copilot for stock research, screening and market signals
AI investing copilot for stock research, screening and market signals
AI-driven market analysis for faster, data-backed investing decisions
AI-driven market analysis for faster, data-backed investing decisions
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.
Options flow, dark pools and dealer gamma with an AI analyst built in
Options flow, dark pools and dealer gamma with an AI analyst built in
SpecialistPrivate AI that answers from your own documents, on Mac and Windows
SpecialistPrivate AI that answers from your own documents, on Mac and Windows
