Your digital twin. Thinks like you, acts for you, stays with you.
Sona builds a second you from your own words. It drafts your email the way you write it, thinks decisions through with you, covers the meetings you cannot make, and gives you back about an hour a day. You own it, and one tap deletes it. Not a chatbot. You.
We are opening access in small batches, in signup order. You own everything, and one tap deletes it.
Watch a twin at work
A scripted preview. A real twin runs on your voice, your history, and your rules - and asks before it acts.
Alex - Sona twin
acts only with permission
What Sona is, in one sentence
A digital twin is a private AI model of one real person: how you think, speak, decide, and remember. You build it, you own it, and nobody else gets access unless you say so. Sona makes it useful every day and keeps it safe for a lifetime.
Your best thinking is going to the wrong things
In life
You cannot be in two places. Messages pile up, meetings eat the day, and the version of you that thinks clearly goes into answering things anyone could answer. By evening there is nothing left for the work that needed you specifically.
Over time
The way you think is the most valuable thing you own, and it is written down nowhere. It lives in your head, gets spent on routine, and when you stop, it goes with you. The same is true of the people who shaped you.
Alone
And every tool you use starts from zero. ChatGPT knows everything about the world and nothing about you, so the help it gives is help for anyone. Advice for everyone is advice for no one.
Every tool captures your data.
None of them captures you.
That is the gap Sona fills.
Meet the second you
Sona builds a twin that acts like you, then puts it to work.
Thinks it through with you.
Talk a hard decision through with yourself, from the outside. Your twin asks the questions you would ask, then shows you the one you have been avoiding.
Writes in your voice.
Emails and replies drafted the way you would write them, so all that is left is to send. It learns from every edit you make, and most people get back about an hour a day.
Goes to meetings for you.
With your permission, your twin sits in the meetings you cannot make. It listens, answers the routine questions by your rules, and hands you a 90-second brief on the way out.
Remembers everything for you.
What did I promise? What did we decide? Where did I see that? Ask and get the answer, with a reminder before the deadline instead of after it.
And if you want, it keeps your voice and your stories safe for the long run. Built on consent, control, and dignity.
Read how we think about thisHow Sona builds a twin that is really you
Five layers around one core. You see every step and you control all of them.
- YouOne core, five layers around it.
Layer 1 of 5
Capture
It starts with a conversation. Persona Genesis interviews you and follows whatever you talk about most easily, and you watch your persona fill in as you go. Life Import adds the chats, notes, and voice recordings you choose to connect.
Layer 2 of 5
Persona Core
The engine of likeness: your phrasing 1:1, your values, your real biography. A Values Firewall knows what you would never say - and declines in your style. A Truth Anchor keeps it honest: on the unknown, it says "let me check with the real me."
Layer 3 of 5
Conversation
Start with text. Add Voice Twin - your timbre from a 1-5 minute sample, conversations in real time. Then Video Twin, so it looks like you too. And Polyglot Twin speaks 30+ languages in your voice.
Layer 4 of 5
Agency
The twin does things - Ghostwriter drafts, Meeting Ghost covers meetings, Daily Sync reports every morning what happened and what it already did. Always assist first, act second, never without your confirmation.
Layer 5 of 5
Trust & Memory
Continuum Memory that lives like yours. A Consent Registry for who may ever do what with your twin. A quantum-safe Vault, a signature on everything it creates - and a Kill Switch: full export or deletion in one tap, always free. Nothing here happens to your twin without you. Not access, not inheritance, not deletion.
You talk to it, it learns to be you, and then it starts helping. You stay in charge the whole time.
0
layers around one core, each one yours to see and control
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samples of your writing is where your style starts to land
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NIST post-quantum standards guarding your Vault
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tap to export or permanently delete everything
The recognition test
The recognition test
One test decides whether your twin is finished. Someone who knows you well gets a blind chat, and they cannot tell whether they are talking to you or to your twin.
Same question, sent to two chats. One is a person. One is their Sona twin.
Honestly? Run the version where you stay and the version where you go, then check which one you keep talking yourself out of. That's usually the one you actually want.
Don't decide it as a job - decide it as a year of your life. What do you lose if you stay, and is that a story you'll be at peace telling later?
That is the bar, and we measure it rather than assert it. Blind conversations, scored and repeated, until "sounds like you" is a number we can show you. Every part of Sona gets held to it.
Illustration of the recognition test.
Four reasons Sona is not just another AI
It sounds like one person.
ChatGPT was trained on everyone, so it answers like everyone. Your twin was trained on you, so it answers like you. And we score it: blind conversations with people who know you well, until "sounds like you" is a number.
It does the work, not just the talking.
Companions chat. Your twin sends the email, preps your notes, thinks the decision through, and covers the meeting you cannot make. Always with your permission.
Yours, and only yours.
You see everything, you can erase anything, and you decide who ever gets access. It is protected with quantum-safe encryption, built to hold even against the machines that could break today's encryption.
A memory that works like yours.
Your twin remembers the important things vividly and the trivial ones dimly, and brings up the right one at the right moment. Your people, your promises, your decisions. Nothing worth keeping gets lost.
Things only a second you can do
Once a twin knows you well, it can do things no general assistant can.
Advice from your future self.
A twin that knows your history can answer as the you of ten years from now, extrapolating your own trajectory and goals in your own voice. It is a projection, and it says so.
Rehearse before it counts.
Practice the hard conversation against a simulation of the other side, built from public information and labeled as a simulation. Then walk in ready.
You, in 30 languages.
Your twin speaks languages you never learned, in your voice and your style. If you sell expertise, that is a global audience without hiring a single translator.
A day without your phone.
Your twin takes the incoming, handles the routine, and interrupts you only on your own definition of urgent.
Your twins, in the room together.
Send your twin to settle the routine with your colleagues' twins. It comes back with a decision for you to approve, and every step is logged.
Always a whisper away.
With Sona Link, the bone-conduction earpiece now in development, your twin whispers the name you forgot and the answer you need. Only you can hear it.
Built to stay safe for a lifetime, even against a quantum computer
Some secrets need to stay secret for decades, not months, and your twin is one of them. So we protect it with encryption designed to hold even against the quantum computers that NIST published new standards for in 2024. Think of it as a lock that tomorrow's most powerful machine still cannot pick.
Sona Vault uses post-quantum cryptography based on three NIST-standardized algorithms: ML-KEM for key exchange, ML-DSA for signatures, and SLH-DSA as a hash-based backup that does not depend on lattice mathematics, alongside strong encryption in transit and at rest. We are not inventing exotic physics. We are applying the standards built for exactly this threat now, rather than waiting for "harvest now, decrypt later" attacks to make old encryption a liability.
A digital twin is meant to last a lifetime and beyond. Encryption that is "good enough for now" is not good enough for something you intend to keep forever.
Whether you are a person or a company, Sona fits
For You
Build your own twin and get your time back. It drafts in your voice, thinks decisions through, covers your routine meetings, and keeps what is worth keeping. Yours from day one.
Explore Sona for you
For Business
Bring twins to your experts, creators, or customers, as a feature inside your product or white-label under your brand. GDPR, CCPA, and the EU AI Act are handled from the first line of code.
Explore Sona for businessLaunching soon
Be first to meet your twin
Sona is not public yet. Join the waitlist and we will tell you the moment you can build your twin. You will own it, and one tap deletes it.
What Sona is not
Not a deepfake tool.
You can only build a twin of yourself, as a verified person, and everything it generates is cryptographically signed. Anyone can check that a piece of content came from a Sona twin, which is the opposite of how a deepfake works.
Not another generic assistant.
Most AI answers like a helpful stranger. Your twin answers like you, because it is grounded in your style, your values, and your actual history. That difference is the whole point.
Made for the living, first.
Every twin is built by a real person, about themselves, while they are here. Whether anything is ever kept or shared later is a choice that stays entirely with its owner.
One identity. Three bodies.
Today your twin lives in a chat window. That is the first form, not the last. Next comes your voice on a call, then your face on a video call, then an earpiece that keeps your twin within whisper distance. The direction is simple: you should stop opening an app and just have your twin with you.
Sona Twin
Your digital twin in text, voice, and video. It advises, drafts, remembers, and stays. Join the waitlist.
Sona Link
A bone-conduction earpiece light enough to forget. Your twin whispers what you need when you need it, and briefs you after the meetings it covered.
Sona OS & Neural
The platform stage: your twin inside the apps you already use, with new abilities from a Skill Store. Further out, we are researching a direct bridge between you, your twin, and everything it knows.
Questions people ask about Sona
- What is a digital twin of a person?
- A private AI model of one real person: how they think, speak, decide, and remember. They build it, they own it, and they control who ever gets access. Sona builds yours and keeps it secure.
- How is Sona different from a chatbot like ChatGPT?
- ChatGPT answers like a helpful stranger, because it was trained on everyone. Your twin answers like you, because it was trained on you. And it has to pass the recognition test: someone who knows you well, in a blind chat, cannot tell you apart.
- Is this resurrection of dead people?
- No. Sona is for the living. Every twin is made by a real person, about themselves, while they are alive. Preserving and one day passing on a twin is an option the owner controls, with consent and care built in.
- Who owns my data, and can I delete my twin?
- You do. You can view everything, change who has access, and permanently delete your twin at any time. We never sell your data.
- How is my twin protected from future quantum computers?
- Sona Vault uses post-quantum encryption based on NIST standards (ML-KEM, ML-DSA, and SLH-DSA). In plain terms, it is a lock designed so that even a future quantum computer cannot pick it.
- Can my twin act on my behalf?
- Yes, within limits you set. It can draft messages, give advice, and cover routine meetings, then bring you the brief afterwards. It assists first, asks before it acts, and logs everything it does.
Become the second version of yourself
Join the waitlist and be among the first to build your twin. You will own it, and one tap deletes it.