Turn your reading into a study companion
Build a Custom AI from a set of books, courses, or videos, then ask it questions, get quizzed, and connect ideas across everything you read.
You'll end up with a Custom AI that knows one subject's books, PDFs, and videos, and quizzes you on them. Build it with Custom AI → + → Build a Custom AI, then drop your material on its Knowledge tab.
Build it
- 01
Start the builder
Open Custom AI in the sidebar. Click +, then Build a Custom AI.
- 02
Name the subject
Say what you're studying and how you want to be taught. @ mention any notes you already have.
- 03
Save it
Review the card, click Create Custom AI, then Create.
- 04
Add the material
On the Knowledge tab, drop in PDFs, EPUBs, Markdown, audio, or video. They're saved to your Library and attached. Use Paste a link for a video and Add from workspace for books you already saved.
- 05
Keep it focused
On Configure, set Workspace access to Connected sources so it answers from your material only.
What to put in
| Part | What to use |
|---|---|
| Instructions | "Explain in plain words, then point me to the passage. Quiz me one question at a time and wait for my answer." |
| Knowledge | The books, PDFs, course notes, and videos for this one subject. |
| Sources | The items you highlighted. Your highlights live in the Library. Optional: the teacher, via Add a creator. |
| Starters | Up to 4. See the examples below. |
Give each subject its own companion. A narrow set of sources gives sharper answers than one AI for everything you've read.
Use it
- "Quiz me on this week's reading."
- "Explain chapter 4's main argument like I'm new to this."
- "Where do these two authors disagree?"
Connecting knowledge to a Custom AI
Add boards, notes, files, links, creators, and brands so your Custom AI works from your material.
Learn from a mentor's real ideas
Turn a creator's published work into a mentor you can ask questions, with answers grounded in what they actually said.
Where your highlights live
Every highlight you make in Eden or import from Readwise, Kindle, and Snipd lives in your Library. Filter to see just highlights.
Email us. A real person reads every message.
Tell us what you tried and where you got stuck. We answer within one business day.
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