Get updates

AI That Knows Why

Cortus acts only on knowledge it can justify. When the facts change, it notices. When it shouldn't act, it doesn't — and it tells you why.

cortus — active beliefs
All domains
sorted by freshness
  • Weekday mornings are for deep work — no meetings before 11.

    schedule · fresh · confidence 0.97

    Why: You said so directly. Reinforced by fourteen declined invites.

  • The Northwind contract renews in October, unless the early option is exercised.

    work · fresh · confidence 0.88

    Why: From the signed contract. The option clause is unconfirmed.

  • When traveling, you prefer aisle seats — except on flights under two hours.

    travel · fresh · confidence 0.93

    Why: Learned from six bookings, including two short-haul exceptions.

  • Acme's pricing is $40 per seat.

    work · stale — verifying · confidence 0.61

    Why: Last confirmed in March. Their pricing page has changed since.

every belief carries its why

The difference

Cortus: Confidence you can audit.

Knows what it knows, and what it doesn't

Responses are conditioned on its knowledge about your world, and it doesn't pretend to know what it doesn't.

Temporally conscious

Stale facts are verified or updated, and persistent ones are remembered.

Natively Auditable

Every action and output comes with a human-readable account of why it was taken, and how it came to that decision.

Cortus understands what is important to you, and why. When it doesn't know, it asks.