Privacy

Sworn to protect
your data.

End-to-end encrypted — AES-256, sealed on your device. Your IP and device ID never reach the model. No analytics, no ads, no trackers, no training on your chats.

Enter Krex →

Nobody else watches
what you do here.

The same cryptography journalists and dissidents trust their lives to — wrapped around every message you send.

AES-256 encryptedZero trainingNo IP · No device IDNo ads · No trackers
What we never do

Privacy by architecture, not promise.

We never train on your chats. Your conversations are yours. They are not a dataset.
Your IP and device ID never reach the model. The thing answering you doesn't know where you are or what you're on.
No ads. No analytics. No trackers. Nothing on this site is watching you for someone else's benefit.
We never sell data. There is no data to sell — the server stores ciphertext it cannot read.
We don't train models — at all. Krex runs frontier models through zero-data-retention (ZDR) providers. We operate models, we don't build them, so your conversations are never needed as training data.
Under the hood

The crypto, for the curious.

ENCRYPTION

AES-256-GCM

Messages are encrypted client-side before they ever leave your device. The server only ever sees sealed ciphertext.

KEY DERIVATION

PBKDF2 · 600k

Your passphrase is stretched 600,000 rounds, so even your key material is brutal to brute-force.

INFERENCE

Zero-data-retention

Prompts run on ZDR providers that process and immediately discard them — never logged, never stored, never trained on.

STORAGE

Ciphertext only

When you enable encryption, our servers hold only sealed ciphertext they cannot read. Lose your passphrase and even we can't recover it — that's the point.

WHAT POWERS IT

Run, not trained

We run frontier models through zero-data-retention providers rather than train our own — so there's no pipeline, and no incentive, to ever harvest your data.

Choose how to get in

Invite-only. No Google, no Meta, no email.

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