详细内容
Understand like Aristotle
The research copilot—discover resources richer, grasp them quicker, dive deeper, act bolder
Loved by over 900,000+ Knowledge Seekers
Trusted by individuals at
Grasp quicker
Drop the sources, get your own dynamic notes
All Sources Welcome
Bring YouTube videos, PDFs, websites, audio files—even live recordings.
The Right Note for Every Goal
Click once to get a ready-to-use textbook with diagrams, mind maps, images, and tables. Pick your style—Timeline, Key, Easy Note, or even Quiz.
Link sources, trust everything
Every sentence carries a citation—jump to the exact quote in the original resource. For videos, use timestamps to land on the right moment.
All Knowledge, No Borders
Don't miss out just because of language. The source viewer's translation lets you use resources in any language, effortlessly.
Dive Deeper
Meet Lily, your Thinking Partner
No liar, reliable partner
Ask Lily anything! She answers based on the trusted sources you provide. Extract just the parts you need from vast materials.
Suggestions, choices
Lily suggests questions that add depth. You can also select parts of a source or note to ask about.
Beyond chatbot, Agent
Not just Q&A—you can also request note writing, editing, and everything else you need for your research.
Deep Search
Tired of empty AI answers?
Sure, ChatGPT nail “Trump’s age.” But ask “Where’s Tesla headed this month?”—and the trust is gone. That’s why DeepSearch recommends reliable sources—so you can discover the insights that matter.
Report Copilot
Understanding ends in expression.Coming soon
Organize your own insight reports with Report Copilot. It helps you back up your thoughts by quickly surfacing evidence from your sources. You focus on the ideas that matter—AI clears the obstacles.
More features to power your workflow
Share & Export
Share via link or export to Notion, PDF, DOCX, or Markdown.
Collections & Tags
Organize your pages using collections and tags.
Chrome Extension
Scrape and save multiple sources easily.
Custom Note
Create custom notes with your own prompts.
Scrap
Clip and manage selected passages from your notes.
Terms Definition
Click underlines to see explanations instantly.
Security as Strong as Our Features
We treat your personal information with the utmost care. All data transmissions are fully encrypted, and providers are prevented from using your data for AI model training.
Use cases
ResearchLearnersFinance & InvestingScholars
Collect sources, analyze information, and write compelling research reports.
Customers love
Spreading globally by word of mouth
Of course, ChatGPT is an amazing tool—I subscribe to it myself.
But my personal top pick is LilysAI.
Since I study a lot through YouTube these days, I often use it to summarize YouTube videos.
@jun_marke_roumu
Now I just read everything through LilysAI. Sent all my tabs with the Chrome extension, keep a To-Do collection, and clear it as I go. Summaries save tons of time—originals only if I need more.
@asbubam
This is insane. Must try
@profilestevekim
"Top 5 most used in daily life. Gemini, GPT, Claude Code, Perplexity, LilysAI are used so much."
@choi.openai
Just subscribed to LilysAI. Crazy thing is, there still doesn’t seem to be any real competitor. NotebookLM also performs similar functions, but I find LilysAI's way of processing sources much more appealing.
@extsvforest
"The AIs I actually pay for and keep telling everyone to use: 1️⃣ When I’m curious – ChatGPT 2️⃣ When I need ideas – Perplexity 3️⃣ When I want layered summaries – LilysAI"
@baetsahgong
Unlock life-changing knowledge
The research copilot—discover resources richer, grasp them quicker, dive deeper, act bolder