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. GPT Guard records 939 monthly visits with +8.2% growth and Freemium, Contact for Pricing pricing.

Chat with AI on enterprise documents without leaking sensitive data
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | chatpdf.com | gptguard.ai |
| Pricing Model | Freemium | Freemium, Contact for Pricing |
| Monthly Visits | 1.04M (1,044,477) | 939 (939) |
| MoM Traffic Delta | -40.47K (-3.7%) | +71 (+8.2%) |
| Primary Market & Share | 🇺🇸 United States (9.6%) | 🇪🇸 Spain (59.3%) |
| Direct Visits / mo | 457.79K | 389 |
| 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.

Chat with AI on enterprise documents without leaking sensitive data
PII and PHI are identified and masked before reaching the LLM, keeping enough context for accurate answers rather than blocking the prompt outright.
Upload unlimited documents and chat across them, with each answer showing the files and context it referenced.
Extract and query text from scans and images so paper-based records are usable in secure AI conversations.
Choose among leading language models for chat and switch to internet search within a session when outside information is 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-sourceHigh-efficiency open-weight and hosted reasoning AI powered by DeepSeek-V4 and R1 at ultra-low token costs.
Free / Open-sourceHigh-efficiency open-weight and hosted reasoning AI powered by DeepSeek-V4 and R1 at ultra-low token costs.

Moonshot AI's long-context assistant for research, coding, and agentic work
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.
Free / Open-sourceOwn your intelligence: a private AI assistant that runs entirely on your machine
Free / Open-sourceOwn your intelligence: a private AI assistant that runs entirely on your machine

Custom AI agents trained on your documentation and knowledge base
Custom AI agents trained on your documentation and knowledge base
Includes robust developer APIs for custom document workflows, but free tier limits document page counts.

Every leading AI model in one secure team workspace
Every leading AI model in one secure team workspace
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.