Pricing
Pick how long you want in
Every option unlocks all 119 courses and comes with course credits to build your own topics. The longer you stay, the more you get. No trial that turns into a charge: $15 once is $15 once, and it ends on its own.
Questions
What is a course credit?
One build of any topic you type in: all 5 parts, ready in a few minutes, yours forever even if you stop paying. 30 days and monthly include one (monthly adds one every month); annual gives 12 up front. Extra builds are $5.
Can I keep a course I build to myself?
Yes. Courses you build join the library by default, which is how the library grows for everyone. Tick "keep it private" when you build for a $10 add-on, or make one private later for $10.
How does sharing work?
Every course has a share link. A friend who opens it gets that course free, no account needed. If they later join, you get a month free: a month off your next bill if you are a subscriber, or 30 more days of access otherwise.
Does the 30-day pass renew?
No. It is 30 days and then it stops, with nothing to cancel. Monthly and annual renew, and you can cancel either from your account page.
Is there a free option?
Three courses are free every week for everyone, no payment needed. A free sign-in saves your progress on them.
What if a build fails?
Some topics cannot be built (unsafe, nonsensical, or not a learnable topic). Your credit comes back, or if you paid for the build you are refunded in full.
Are the courses written by people?
They are generated by a language model from a fixed set of instructions, checked by a second review pass that corrects the draft before it is published, and stored as written. Every course page lists the sources to check it against, each one fetched at build time, and shows how many mistakes learners reported and how many were fixed. Every page has a "report a mistake" link and we fix what gets reported. Taking a course never uses a live model, which is why it is fast and why the whole library costs $9 a month.