어떤AI Which AI? — AI tool comparison

릴리스에이아이 · Korean company

Lilys AI

A Korean service summarizing videos, PDFs, and web posts in Korean.

Free plan Korean supported

Last verified:

Open official site (opens in a new tab) Try it on ailearn.space (opens in a new tab)

Key specs

Lilys AI key specs
Price Free plan
Free limits Unlimited AI reports and chats. Supports YouTube, video files, PDFs, and web pages.
Paid price Starter ₩6,320/month · Basic ₩15,920/month · Pro ₩51,120/month (billed annually)
Student / edu discount No
Korean KoreanKorean service. Both UI and summaries default to Korean.
Login Required
Platforms Web · iOS · Android · Browser extension
File input PDF, YOUTUBE, URL, AUDIO, TXT
Download output Copy summaries, export to Notion (varies by plan)
Commercial use UnverifiedTerms of service

Prices may change. Currency and billing period follow the official listing; no currency conversion. Pricing page (opens in a new tab)

Who it's for

  • Students and professionals who want to skim 1-hour YouTube lectures or seminar videos first with a Korean timeline summary.
  • People who need to quickly grasp English papers and report PDFs in Korean. Great for filtering whether the original is worth reading in full.
  • People who want to transcribe meeting recordings or lecture audio to store in note apps. You get both summaries and full transcripts for searchable archives.

Drawbacks

  • The free tier limits monthly summary counts and video lengths, so daily users quickly face the need for a paid plan.
  • While summaries read smoothly, source citation tracking is weak, meaning you must check the original text for precise quotes.
  • Login is strictly required. You cannot test it out without signing up.

Getting started

  1. Sign up and log in on the official website using a Google account or other methods.
  2. On the home screen, enter a YouTube link, PDF file, or web URL. You can also upload audio files.
  3. Once the summary is ready, review key points and the timeline (for videos). Clicking an item jumps to that specific section.
  4. Ask follow-up questions in the chat box below, such as "Explain chapter 3 in more detail."
  5. Copy the results or export them to Notion for storage. Installing the browser extension adds a direct summary button on YouTube.

Similar tools

  • Gemini Notebook Free plan Focuses on "asking questions about sources" rather than simple summarization, with a much more generous free tier.
  • ChatPDF Free plan Handles only PDFs, but can be used immediately without logging in.
  • Glasp Free Glasp extracts raw YouTube transcripts, while Lilys AI organizes the content into structured reports.

See also

Official link

https://lilys.ai/ (opens in a new tab)

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