Pricing
Pricing so simple,
you'd read instantly.
Start free — every published volume is open to read. Upgrade only when you want progress sync across devices, the writable code-trace playground, and offline PDFs.
Reader
For anyone curious about modern AI
$0/forever
Start reading- All published volumes — open access
- Interactive 3D visualizations
- Code-trace walkthroughs (read-only)
- Community discussion threads
- Mobile + desktop reading
Scholar
FeaturedFor engineers building intuition
$8/month
Billed yearly as $96Save 33%
- Everything in Reader
- Progress + notes synced across devices
- Full code-trace playground (edit + run)
- Tensor & attention interactive playgrounds
- Offline PDF downloads of every chapter
- Priority email support
- New volumes the day they ship
Scholar — Monthly
Try it month-to-month
$12/month
Billed monthly · cancel any time
- Everything in Scholar
- Pay month-to-month
- Cancel any time, no questions asked
Stripe checkout is being finalised. Create a free Reader account now — we'll email you the moment paid plans go live.
No credit card needed to start. Cancel any time. 14-day refund on first paid charge.
What you get
Side-by-side, no fine print.
| Feature | Reader | Scholar |
|---|---|---|
| All published volumes — read access | ||
| Interactive 3D visualizations | ||
| Community discussion threads | ||
| Notes + bookmarks (local only) | ||
| Progress + notes synced across devices | ||
| Writable code-trace playground | ||
| Tensor & attention interactive playgrounds | ||
| Offline PDF downloads | ||
| Priority email support | ||
| New volumes the day they ship |
FAQ
The short answers.
Is there really a free tier?+
Yes — the Reader plan is free forever and gives you full read access to every published volume, every chapter, and every interactive 3D visualization. You only upgrade if you want progress sync, the writable code-trace playground, offline PDFs, or priority support.
Can I cancel any time?+
Always. Cancel from your account page in one click. If you're on a yearly plan we prorate the unused portion automatically. No retention dance, no email gauntlet.
What's the difference between Scholar and the free Reader plan?+
Reader is for reading. Scholar is for working through the book — your notes/bookmarks/progress sync across devices, the code-trace playground is editable so you can experiment with the PyTorch in-place, and you get offline PDFs you can read on a plane. Scholars also get new volumes the day they ship.
Do you offer a team / classroom plan?+
Yes — we have a Team plan with shared reading-group rooms, shared notebooks, SSO, and invoicing. Reach out via the contact form on the account page and we'll set it up.
Refunds?+
If you're not satisfied within 14 days of your first paid charge, email us and we'll refund you in full — no questions, no forms.
Start free. Upgrade when you're hooked.
The Reader plan is free forever. Most people don't upgrade until they've finished their first chapter — and we're fine with that.