Praefex Companion
Your AI finally remembers every conversation, every goal, every private detail — permanently. It runs quietly on hardware you own, under rules you can read and trust. No resets. No data harvesting. No monthly bills. Just an AI that actually knows you and belongs to you.
Early Access
Be among the first to own an AI that truly knows you — no recurring fees, no compromises.
Limited pre-configured Mac Mini bundles. Early access Q2 2026. Software is free forever.
What Is Companion
Companion is a personal AI that lives on a device in your home — a Mac Mini M4 Pro. It runs 70-billion-parameter language models entirely on-device. Nothing leaves your network. There are no monthly fees. The AI you talk to in year one is the same AI, with all of its memory, in year ten.
01
Companion remembers every conversation, goal, preference, and insight — permanently. Memory is stored in an encrypted local database. It is never uploaded, never summarized away, never reset.
02
Over time, Companion learns how you think, how you communicate, and what matters to you. Its personality adjusts to yours. It becomes more useful the longer you have it.
03
Companion operates under 33 published, auditable rules that define exactly what it can and cannot do. The rules are fixed. No corporation can quietly change them after the sale.
04
Runs powerful 70-billion-parameter models entirely on your Mac Mini — no internet required. No API calls to OpenAI, Anthropic, or anyone else. When the internet is down, Companion still works.
05
Praefex Wire lets you securely talk to your Companion from your phone or laptop — all traffic stays encrypted inside your home network. Access your AI from anywhere, privately.
06
You pay for the hardware. The software is free. No subscription. No per-query charges. No pricing tiers. The economics are simple because the architecture eliminates the need for anything else.
Why Not ChatGPT
| The question | ChatGPT / Gemini / Claude | Praefex Companion |
|---|---|---|
| Does it remember me? | Memory resets between sessions. Context windows expire. Your history is a liability they manage, not an asset they preserve. | Every conversation is permanently stored and indexed. Companion remembers what you said three years ago. |
| What happens to my data? | Your conversations are used to train future models. You agreed to it in the Terms of Service. You cannot opt out completely. | Your data never leaves the device. There is no server to breach. There is no policy that can change this. |
| What does it cost? | $20–$200 per month, per user, forever. The price can increase. The model can be downgraded. The service can be shut down. | One hardware purchase. No recurring fees. Software is free and open. |
| Who controls the rules? | A corporation in San Francisco decides what the AI will and will not do. Those rules change without notice. | 33 published rules. Auditable. Fixed at purchase. No one can change them after the fact. |
| What if the company folds? | The service stops. Your history disappears. You start over. | The hardware sits in your house. The software runs offline. Nothing changes. |
| Can I verify any of this? | No. You trust the privacy policy. | Yes. Open software stack. Local inference. Network traffic you can inspect yourself. |
Constitutional Framework
Companion is bound by 33 fixed, publicly auditable constitutional rules. They cannot be changed after deployment — not by us, not by any company, not by any government.
The device owner has absolute authority over their Companion’s behavior and data.
When uncertain, Companion asks rather than assumes.
Your shared history serves as a soft biometric for identity verification.
Detects coercion and surfaces a clean decoy state instead of real data.
Voice data is processed locally and never transmitted.
No remote party can compel access without physical possession of your device.
Companion respects your beliefs without imposing its own.
Companion tells you the truth, even when it’s uncomfortable.
Your rights as owner are retained permanently and cannot be revoked.
Companion never tells you what you want to hear. It tells you what’s true.
The Hardware
Companion ships pre-configured on a Mac Mini M4 Pro. Apple Silicon’s unified memory architecture makes 70-billion-parameter model inference practical at home for the first time. No GPU server. No liquid cooling. A device that sits on your desk and runs quietly.
The Stack
33 rules define the ethical and operational boundaries of Companion. Every rule is published. No silent system changes. No behavior the user has not agreed to. The rules are fixed at deployment and cannot be modified remotely.
Every memory is stored privately and can be found instantly when needed. The database is yours: portable, exportable, and never touched by a third party.
Runs powerful 70-billion-parameter models entirely on your Mac Mini — no internet required. No API key. No token limit. No latency from a data center 1,500 miles away.
Companion observes how you communicate and adapts its tone, depth, and style over time. The more you use it, the more it reflects your thinking. This adaptation is local and private — no profile is built on a server anywhere.
Praefex Wire lets you securely talk to your Companion from your phone or laptop — all traffic stays encrypted inside your home network. Access your AI from your phone, laptop, or tablet. Traffic stays within your mesh.
Founding Cohort
Praefex Companion launches Q2 2026. Reserve your place now.
Limited pre-configured Mac Mini bundles. Early access Q2 2026. Software is free forever.