// THE PEOPLE BEHIND TSUIN.AI
WE ARE BUILDING PRE-AGI AI TWINS THAT CAPTURE THAT THOUGHT PROCESS.
Two people. One objective. To build an AI Twin that continuously learns from the human.
We are not building another AI assistant or agents.
We are building the part of you that fades when the codebase grows past what one head can hold —
and bringing it back to you.
Tsuin (双) means twin in Japanese. A second brain that remembers what you decided, why you decided it, and what you'd say if the same question came again. Not your replacement. Your continuity.
AUDREY AUI YONG
Co-founder · CEO
// previously: product manager
She'd solved that bug before.
She just couldn't remember she'd solved it.
The best engineers who left the team. We lost the reasoning that got them there.— AUDREY, ON WHY SHE NEVER GOT RAISED OR PROMOTION AS A PM. DEVELOPER LEFT, HER PROJECT WAS STALLED.
DAVID FU
Co-founder · Chief AI Officer
// previously: software & AI/ML engineer
AI ships features in hours.
Humans context-switch in minutes.
Memory is the last moat. Build it well, and you'll outlast every model that replaces you.— David, internal memo · jan '26
What We Believe
Memory is infrastructure.
Not a feature. Not a sidebar. The thing you build the company around.
A Twin is not an assistant.
It doesn't help you work. It holds the part of you that already did the work.
Context belongs to the human.
Your Twin trains on you. It speaks only for you. It leaves with you.
We are building for the post-AGI human.
When machines run the codebase, the person who knew why still matters most.
Build your Twin with us.
We're in closed beta. A small group. High signal.
JOIN THE WAITLIST →