Your personalized learning engine.

Turn the content you trust into a knowledge base that helps you learn, stay current, and put what you know into practice.

Built around the sources you trust

YouTube channels Podcasts Articles Interviews

The knowledge you want is already out there.

Whatever you want to learn, there are people already doing it, testing it, researching it, and sharing what they know.

The hard part is finding the right information.

It’s searching across dozens of channels. Watching hundreds of hours of videos. Saving things you mean to come back to. Remembering where you heard something. Connecting ideas across different sources. Keeping up as new information comes out.

And figuring out what any of it actually means for you.

Your learning engine brings that knowledge together so you can spend less time searching and more time understanding.

Don’t just save content.
Learn from it.

Your bookmarks keep growing. Your Watch Later list has 247 videos in it. You follow brilliant people whose content you know would be useful — if you actually had time to consume all of it.

Your learning engine turns all of that content into something you can actively use.

  • Ask questions across hundreds of videos.
  • Explore the biggest ideas in a topic.
  • Compare how different sources approach the same problem.
  • Discover useful concepts you wouldn't have known to search for.
  • Turn hours of content into insights, frameworks, and next steps.

And whenever something deserves a deeper dive, go straight back to the original source.

Explore your knowledge
What do different experts say about learning something new?
Across your sources

Explore where ideas overlap, where perspectives differ, and which source is worth going deeper into.

↗ Source one↗ Source two↗ Source three
Illustrative preview

Learn your way.

01

Start with what you want to know.

Tell us what you’re interested in learning — from consumer psychology to strength training to AI engineering.

02

Choose the content you trust.

Add the creators and channels you already follow, or let us help you discover relevant sources.

03

Make their knowledge searchable.

Their content becomes part of your personalized learning library, ready to explore whenever you need it.

04

Learn, explore, and apply.

Ask specific questions or browse the ideas already inside your library. Compare perspectives, follow interesting threads, and apply what you learn to your own goals.

Your own curriculum, built from the content you trust.

A great course does more than give you information. It finds useful material, filters out the noise, organizes ideas, connects concepts, and helps you understand what matters.

But an enormous amount of the world's best knowledge is already being shared publicly.

Your learning engine brings that scattered knowledge together and helps turn it into something you can actually learn from.

Across YouTube channels.
Podcasts and interviews.
Articles and researchers.
Practitioners doing the work.
Ideas worth coming back to.

Explore a subject from multiple perspectives today — and eventually build structured learning paths around exactly what you want to master.

Stay current without keeping up with everything.

The people you learn from don't stop publishing. Your knowledge base keeps growing as they do.

See what’s new across the sources you follow without checking every channel individually. Get a digest of the latest ideas, research, developments, and conversations relevant to you.

Discover when new evidence challenges an older idea. See when several sources suddenly start talking about the same emerging topic. Or simply catch the handful of new videos that are genuinely worth your attention.

Know what changed — and decide what deserves a deeper look.

Go beyond the empty chat box.

Sometimes the hardest part of learning with AI is knowing what to ask. So your knowledge base doesn’t just sit there waiting for questions.

Explore the ideas inside it. Discover recurring themes. See where sources agree — and where they don’t. Find concepts you haven’t encountered yet. Explore what’s new. Follow an idea back to the content it came from.

The goal isn’t just to answer your questions. It’s to help you understand the subject.

Built on the content, not instead of it.

Every insight stays connected to where it came from.

See which sources contributed to an answer. Jump directly to the original video. Explore more from a creator whose ideas resonate with you. Go deeper when a summary sparks your curiosity.

Your learning engine makes great content easier to navigate and learn from — while keeping the original sources at the center.

Frequently asked questions

Why wouldn’t I just ask ChatGPT, Claude, or another AI?

General-purpose AI is incredibly useful, but sometimes you want more than a general answer.

You want to learn from specific sources you trust. You want the perspective of people actively working in the field. You want to know where an idea came from.

And in fast-moving fields, you may want information published long after a model was originally trained.

Your learning engine combines the speed and flexibility of AI with a knowledge base built around the content you choose — including new content as it’s published.

Do I have to know which channels to add?

No. If you already know whose content you trust, add them directly.

If you don't, start with a topic and discover relevant creators and sources to build your library. You decide what belongs in your learning engine.

Does this replace watching the original content?

It shouldn’t. Use your learning engine to discover ideas, answer questions, connect information across sources, and figure out what deserves more of your attention.

Every insight points back to the original content so you can watch, listen, or read more whenever you want the full context.

What happens when new content is published?

Your knowledge base can grow with the sources you follow. New content can be added automatically so you can see what’s changed, explore the latest ideas, and stay current without manually checking every source yourself.

Is this just another place to save content?

No. Saving is only the first step. The point is to make the content you care about searchable, explorable, connected, and useful — so the things you save can actually become things you learn.

There’s more knowledge out there than you could ever consume.

You don’t need more content.
You need a better way to learn from it.

Open Marble