ChatPDF records 1,044,477 monthly visits with -3.7% month-over-month growth and Freemium pricing. Wikis.ai records 1,703 monthly visits with -21.6% growth and Freemium pricing.
Chat with any PDF, video, or website and get cited answers in seconds
Ask once, compare the best AI models.
| Dimension / Metric | ||
|---|---|---|
| Official Domain | chatpdf.com | wikis.ai |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 1.04M (1,044,477) | 1.7K (1,703) |
| MoM Traffic Delta | -40.47K (-3.7%) | -468 (-21.6%) |
| Primary Market & Share | 🇺🇸 United States (9.6%) | 🌐 Global (—) |
| Direct Visits / mo | 457.79K | 520 |
| User Rating | 4.2 | 4.1 |
| 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.
Ask once, compare the best AI models.
Send a single prompt to multiple models like GPT, Claude, Gemini, Grok and DeepSeek, then scan their answers in a stable side-by-side grid instead of juggling tabs.
A dedicated research mode explores the web in real time, gathers primary sources and reviews, and assembles a structured report with inspectable citations.
See where models agree and where they diverge, using consensus as a confidence signal while keeping each model's distinct nuance visible.
An editorially structured library of explainers on AI fundamentals, models, marketing, audio and more, each of which you can continue as a chat with any model.
OpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
OpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
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.
Real-time AI answer engine and research workspace combining live web citations with frontier reasoning models.
Real-time AI answer engine and research workspace combining live web citations with frontier reasoning models.
Moonshot AI's long-context assistant for research, coding, and agentic work
AI research platform for reading, understanding and writing scientific papers
AI research platform for reading, understanding and writing scientific papers
Computational knowledge engine for expert answers
Free / Open-sourceCompletely free PDF reading and editing tool with AI assistant, though basic compared to dedicated platforms.
Chat with 30+ leading AI models in one clean, fast workspace
Chat with 30+ leading AI models in one clean, fast workspace
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.
One subscription, many AI models — chat, search, analyze files and links
One subscription, many AI models — chat, search, analyze files and links
A free AI answer engine that cites its sources
A free AI answer engine that cites its sources
