Your AI tutor, grounded in your own textbooks.
Upload your textbooks. Get a tutor who works through them with you, chapter by chapter.
It’s Week 6. A Linear Algebra problem set is due Friday, there are 400 pages of Philosophy reading on your desk, and your course materials are scattered across half a dozen tabs.
ChatGPT doesn’t know your professor’s version of any of it — so every session, you’re pasting screenshots and re-explaining the course. By finals, you want to actually know this material. Right now, you’re just trying to keep up.
Drop in your textbook PDFs. Otto maps every chapter into a structured outline you can work through.
Ask anything, any time. Your AI professor already knows what’s in your book and cites the exact page when it answers.
Work problems from the section you just read. Every attempt feeds back into your skill map.
Most study tools are happy to hand you the worked solution. You scroll, nod, close the tab. On exam night, the same problem still breaks you.
Otto won’t do that. It asks you the next question you should be asking yourself. It works the problem with you — up to the step you actually got stuck on, not past it.
“I can’t remember how I got the answer” is the worst feeling in an exam room. We’re building the tool we wish we’d had.
Every answer cites the page and the textbook your course assigned — down to the paragraph the idea came from.
Works for physics problem sets, case law excerpts, history readings, and language textbooks alike. Handles equations, diagrams, and scanned pages.
See which concepts you've actually mastered — and which you've been avoiding since Week 3.
Skills are pulled from your textbook, not a generic taxonomy. Your tracker updates every session.
Problems from the section you just worked through — no generic problem banks, no unrelated fluff.
Miss a problem? Your skill map updates, and the next session drills it.
Most of us already use ChatGPT or NotebookLM. Here’s what Otto does that they don’t.
We start from your textbook.
ChatGPT and NotebookLM are genuinely great — once you tell them what you’re reading, what course this is, and which edition of the textbook you have. Otto does that setup once. Every session after starts with your textbook already loaded.
We turn reading into a loop.
NotebookLM is a great document-chat — you ask a question, you get an answer grounded in your PDF. Otto adds the other half of studying: practice problems from the section you just read, and a mastery tracker that follows what you’ve actually learned.
We teach, not just answer.
We walk the problem with you, up to the step you got stuck on. The difference between "closing the tab satisfied" and "passing the exam" lives in that step.
From organic-chemistry mechanisms to close-reading Dostoevsky, every plan is the whole campus — lectures, practice, skill maps, insights. Plans differ on the compute behind them and how much you take on. Pay yearly and two months are on us.
| AUDITORAuditorFreeno card, everSit in free — try the whole campus, then keep going your way.Audit free | SCHOLARScholar$5/moor $48/yrYou already pay for the AI; $5 runs the campus around it.Enroll as Scholar | Most chosenENROLLEDEnrolled$24/moor $240/yrFull campus, zero setup, enough compute you never think about it.Enroll now | HONORSHonors$39/moor $390/yrThe sharpest models on faculty, spent where they matter.Enroll in Honors | |
|---|---|---|---|---|
| Compute & models | ||||
| AI credentials | On us, or your key | Your own AI key | Managed — included | Managed — included |
| Included compute | Starter credit, one-time | Unmetered — your key | Managed pool, every term | Largest managed pool |
| Models | Gemini, or any on your key | Any model — your key | Gemini | Gemini, Claude & GPT |
| Frontier models (Claude, GPT) | – | Your keyIncluded — Your key | – | Included |
| Scale | ||||
| Professors | Core faculty | Core + skill mentors | Broad faculty | Full faculty |
| Courses | 1 | 15 | 10 | 30 |
| Textbooks | 2 | 60 | 40 | 120 |
| Materials storage | 1 GB | 25 GB | 15 GB | 50 GB |
| Every plan includes | ||||
| Lectures, practice, skill maps & insights | Included | Included | Included | Included |
| Socratic teaching & pace control | Included | Included | Included | Included |
Compute & models
Scale
Every plan includes
Compute & models
Scale
Every plan includes
Compute & models
Scale
Every plan includes
Compute & models
Scale
Every plan includes
Auditor is free, two ways. Start with a one-time credit of managed AI — no card, no key — enough to load a textbook and study it across several sessions. When it’s spent, add your own AI key and keep auditing free for as long as you like. One course either way.
Every plan opens with the core faculty; paid tiers bring more professors on board from the start, and you earn the rest through study on any plan.
Change or cancel anytime — it’s self-service, and access runs to the end of the period you paid for. Payments are handled by Lemon Squeezy, our merchant of record, who manages billing, receipts, and tax.
Understand it. Practice it. Remember it when it counts. Upload your textbook — we’ll take it from there.
Upload your textbook
