ChatPDF
Chat with any PDF - Your PDF AI to ask your PDF anything
LilysAI
Don’t miss the sources that change your performance
Updated February 2026
| ChatPDF | LilysAI | |
|---|---|---|
| Rating | 4.1★ | 5.0★ |
| Reviews | 16 | 20 |
| Pros | 10 | 23 |
| FactScore™ | 50.2 | 66.1 |
FactScore™ Comparison
FactScore™ weighs both quality (rating) and popularity (reviews) for a fairer ranking than stars alone.
Pros & Cons
Only in ChatPDF — Pros
Easy to use Saves time Fast document processing Helpful for academic work Summarize/translate/explain/rewrite Accurate response to prompts Fact-checking capability Multiple format support Upload large PDFsBoth tools — Pros
Free tierOnly in LilysAI — Pros
Video summarization Sophisticated summaries Time-saving Content organization Educational tool Mind map generation Fast performance Korean language support Multi-language support PDF summarization Structured notes Audio summarization High readability AI-powered chat Content creation User-friendly interface Various output formats Voice transcription Website summarization Export options Global accessibility Real-time meeting summariesOnly in ChatPDF — Cons
Cannot combine multiple PDFs Sometimes inaccurate responses Inconsistent performance Limited free version Pricing compared to competitorsBoth tools — Cons
—Only in LilysAI — Cons
—Details
| ChatPDF | LilysAI | |
|---|---|---|
| Categories | Note and writing apps, PDF Editor, AI Chatbots | Note and writing apps |
| Platforms | Web | Web |
| Became Popular | March 2, 2023 | May 15, 2025 |
| Website | chatpdf.com | lilys.ai |
Who Should Pick Which?
Choose ChatPDF if...
- Easy to use
- Saves time
- Fast document processing
Choose LilysAI if...
- Video summarization
- Sophisticated summaries
- Time-saving
With a FactScore™ of 50.2 vs 66.1, LilysAI leads in community reception. ChatPDF uniquely offers Easy to use and Saves time, while LilysAI stands out for Video summarization and Sophisticated summaries.
What Users Say
ChatPDF
UPDF ticks all the checkboxes to be a feature-rich and reliable AI tool to chat with PDFs, regardless of document length or complexity. Convert PDFs to mind maps Fast document processing Accurate r...
Life's too short to read hundreds of pages of docs. Use ChatPDF instead.
Awesome product, loved it! Saves a lot of my time.
LilysAI
사용자로서 LilysAI는 다양한 형식의 콘텐츠를 신속하고 정확하게 요약하는 인공지능 기반의 생산성 도구로, 학습, 업무, 콘텐츠 제작 등 여러 분야에서 유용하게 활용하고 있습니다. LilysAI를 사용하며 다른 이...
Efficient, intuitive, and incredibly helpful! LilysAI has saved me so much time by helping me quickly understand long or complex texts. The summaries are clear and accurate, making reading and revi...
I've found this service incredibly useful, especially when I need quick summaries of YouTube content during work. When I'm pressed for time and need to check specific information fast, I simply sta...
Related Comparisons
Frequently Asked Questions
Which is better, ChatPDF or LilysAI?
Based on FactScore™, LilysAI leads with a score of 66.1 vs 50.2. LilysAI has a higher rating of 5.0★ compared to 4.1★.
What are the pros of ChatPDF compared to LilysAI?
ChatPDF uniquely offers: Easy to use, Saves time, Fast document processing, Helpful for academic work, Summarize/translate/explain/rewrite.
What are the pros of LilysAI compared to ChatPDF?
LilysAI uniquely offers: Video summarization, Sophisticated summaries, Time-saving, Content organization, Educational tool.
Is ChatPDF better rated than LilysAI?
ChatPDF is rated 4.1★ from 16 reviews. LilysAI is rated 5.0★ from 20 reviews.
What is the FactScore™ of ChatPDF and LilysAI?
FactScore™ weighs rating and review volume together. ChatPDF scores 50.2 and LilysAI scores 66.1.
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