Knowledge is power.Prove yours.
Closed-book tests, set and graded by an AI examiner, in 246 subjects. Every point on the board is earned by what you know, and none of it can be bought.
One question. A clock. An examiner who follows up.
Name any topic, from school biology to red teaming. The examiner asks for reasoning, not a line learned by heart, and when your answer is thin, it asks you to go further.
- Questions that make you think: explain, apply, calculate, compare
- A clock on every question, set by the examiner
- Up to two follow-ups, then one grade for the whole exchange
Why is it colder in winter in the Northern Hemisphere?
Only what is in your head.
No notes, no other tabs, no AI helpers. Leaving the test shows on your result with the time away, and only clean, finished tests count as verified.
Hard to earn. Worth showing.
Ten fields, each worth 1,000 points, earned module by module. An easy question proves at most 40% of a module, only hard ones reach 100%, and a wrong answer costs part of what you had shown.
Everything worth knowing, on one map.
246 subjects and 2,954 modules, from school foundations to specialist fields. Every subject is rated 1 to 10 by what it builds on, so you always know how high you are climbing.
- subjects
- 246
- modules
- 2,954
- connections
- 593
The same race for everyone.
Everyone gets the same 3 ranked tests a day. You are ranked in your country and in the world by your knowledge score, and by nothing else.
- 1
Mira K.2,140 - 2
Kenji S.1,712 - 3
Ana L.1,266 - 4
Tomás R.1,198 - 5
You1,180
The only flex you can’t buy.
Three grades in ten disciplines, places among the best of your country and the world, and breadth across the fields. Each one unlocks a portrait or a backdrop, and once earned, it stays yours.
Learn exactly what you missed.
After a test, the tutor teaches what was missing, one task at a time, and never gives the answer before your third try. Memory checks bring the idea back after 1, 3 and 7 days.
- TutorYou have the angle right. What else changes in winter?
- YouThe days are shorter.
- TutorExactly. So the ground has less time to warm up.
- Day 1
- Day 3
- Day 7
Standing is earned by knowledge alone.
Nothing at Astratos can be bought: not a point, not a place on the board, not a distinction. Adept, our subscription, deepens your study. It never touches your rank.
Free
- 3 ranked skill tests a day
- 1 study session a day: learn any topic or a past test with the tutor, or review a test
- Memory checks on your last 3 tests that went less well
- Your progress across the atlas, and the leaderboard
Adept
- 3 ranked skill tests a day, like everyone
- 5 practice tests a day that never touch your rank
- 5 study sessions a day, with unlimited tutor replies
- Open Discussion: ask the scholar anything, 15 messages a day
- Talk out loud with a voice tutor: 3 calls a week, up to 5 minutes each
- Full progress: every module, trends, depth by difficulty and what to learn next
Study in your own language.
Questions, feedback and lessons arrive in any of nine languages, and the examiner grades what you know, whatever language you answer in.