Kairos

Optimizing studying.

Learning that stays, proves, and improves itself.

See an example check

You skip a paid shift to go to a concert. What is the opportunity cost?

Example

The price of the ticket.

Unsure

Partly right.

58/ 100

What held
The ticket counts. Money you spend is part of what the choice costs you.
What’s missing
You left out the pay from the shift you skipped. Opportunity cost is everything you give up when you choose, including money you never got to earn.
Next
Try again in one sentence: what does a free concert cost someone who skips a paid shift to go?
Example, not a real learner’s answer. Typed-answer scoring is in development.

The problem

You knew it the night before. Then the exam asked, and you blanked.

AI makes practice feel easy. Close the chat, and it’s gone.

+48%

On practice problems, with the chatbot

−17%

On the exam, chatbot removed

Both against students who never had it.

In a study of nearly 1,000 high-school math students, those who practiced with a general-purpose chatbot scored 17% lower on an exam without the chatbot than students who never had it.

Bastani et al., PNAS, 2025 · doi:10.1073/pnas.2422633122

Kairos works the other way: you produce the answer. Kairos proves what held and improves the rest.

How it works

  1. Improves

    Six questions shape how Kairos teaches you. Choose one of the curated paths, or name what you want to become, and Kairos lays a path for it. Each new lesson is shaped by what you got wrong.

  2. Proves

    Every lesson teaches, then asks, and you answer before you see the answer. Multiple-choice answers are checked on the server against the key, by fixed rules, and nothing rounds the result up. Then you explain it in your own words, and Nous, the AI inside Kairos, reads it and replies.

  3. Stays

    Days later, Kairos will ask again, with no warm-up and no hints. What you still hold is yours, proven.

    Once you master a concept at a checkpoint, each pass pushes its next check further out. A miss brings it back sooner.

    372160180

    days

What builds up

Mastery here is computed only from what you actually did. No one can hand it to you, not even Kairos.

Roadmap

Your record will become a map of what you understand, bright where it held and dim where it still needs work.

In time, that map becomes proof you can put in front of anyone.

Starting with college students. Kairos opens to small circles, in order.

Joining adds your email to the list. It doesn’t create an account.