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.
ChatPDF records 1,044,477 monthly visits with -3.7% month-over-month growth and Freemium pricing. Particle records 15,561 monthly visits with -11.9% growth and Free pricing.

Personalized news, summarized from many sources
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | chatpdf.com | particle.news |
| Pricing Model | Freemium | Free |
| Monthly Visits | 1.04M (1,044,477) | 15.56K (15,561) |
| MoM Traffic Delta | -40.47K (-3.7%) | -2.11K (-11.9%) |
| Primary Market & Share | 🇺🇸 United States (9.6%) | 🇺🇸 United States (75.5%) |
| Direct Visits / mo | 457.79K | 11.89K |
| 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.

Personalized news, summarized from many sources
Each story is condensed into a short summary built from many publishers' reporting, so you can grasp the essentials quickly and still see the underlying articles.
Follow channels such as technology, politics, sports, science, economics and gaming, plus narrower entities and events, to shape what appears in your feed.
Query a large index of podcasts to see what shows are saying about a given topic, company or person, alongside the written coverage.
Stories display how many articles back each summary, giving a rough signal of how widely an event is being covered.
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.

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.
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.
Turn podcast listening into lasting knowledge
Turn podcast listening into lasting knowledge
Chat with any YouTube video and get instant answers from its content
Chat with any YouTube video and get instant answers from its content
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.
Clean interface for complex technical document summarization, but offers fewer advanced export formatting options.