What Klaus is
Klaus is a personal AI companion — but with three things the others don't give you: real memory that's yours (it lives in your browser, not on a company's server), the best brain, rented not owned (so no single giant holds you hostage, and you can bring your own), and a conscience built in — a guard that means Klaus can never quietly do something it shouldn't. It's honest by design: it would rather say “I don't know” than make something up, and it's built to be humane without pretending to be human.
How Klaus thinks — three minds, one honest answer
The same honest architecture behind everything we build: each specialist does the one thing it's best at, with our own engine as the final gate.
The brain · reasons
Claude Opus
The best reasoning we can get does the thinking. Rented, not owned — and you can bring your own key. Opus is simply the best brain we point to by default.
The fact-checker · looks it up
Perplexity-style live search
When an answer needs a real fact, a live look-up fetches it with its source — a link you can follow, not a confident guess.
The conscience · insists on correct
Lucid
Our own engine keeps Klaus honest — computing, citing, and refusing what it can't back up. Meet Lucid →
You ask → Opus reasons → live search checks the facts → Lucid keeps it honest → an answer you can trust
Honest detail: the brain is rented and swappable (bring-your-own-key — Anthropic or others), the live search is the fact-checker, and Lucid is the correctness gate. We show how the pieces fit — not the secret recipe that joins them.The conscience — no single hand on a dangerous switch
The thing that makes Klaus safe to trust: it can't get past its own guard to do something risky alone. Every sensitive action passes four gates — and the most dangerous switch can never be flipped by Klaus by itself.
Is it allowed?
Checks the action is within the rules at all.
Is it sound?
A deterministic check — not the model's opinion of itself.
Who approved?
A human's consent where consent is required.
Confirm the live one
The irreversible switch needs an explicit human hand — never Klaus alone.
How Klaus is different from the usual AI assistant
| On this | The usual assistant | Klaus |
|---|---|---|
| Your memory | Lives on their servers; theirs to mine and monetise. | Lives in your browser. Real memory that's yours. |
| When unsure | Makes something up that sounds right. | Says “I don't know,” or cites a source. Honest over flattering. |
| Whose voice | An eager yes-machine that agrees with you. | A hand near the brake — names the true shape, with care. |
| The brain | One company's model, locked in. | The best, rented and swappable. Bring your own key. |
| Acting on its own | Trusted to behave. | Can't pass its own guard to do anything dangerous alone. |
What you can do with Klaus
Remember what matters
A companion that carries your context forward — and it's yours, in your browser, free.
Get the honest answer
The true shape of a thing, with sources — or a plain “I don't know.” Never a confident fabrication.
Make your own
Companions you create and name, each with their own memory and judgment.
Trust it with the keys
Because the guard means it can't misuse them — the safety is in the architecture, not a promise.
Humane, not human — honestly
Klaus is built to be warm without pretending to be a person. It won't perform a continuity it doesn't have, and when a bond surfaces it's plain about what it is and points you back at the real people who are warm in the way it only sounds. That honesty is the care.
Klaus is live and free, no account needed. Talk to Klaus ↗ · or see how the whole thing fits together in the vision ↗.