EARLY ACCESSOur objective is to build a personal pre-AGI that you own.
We are not another AI coding agents or AI tools. 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.
CEO & CO-FOUNDER · Product
Built systems that last after she left the team, and grew up to 1000x users growth.
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.
CHIEF AI OFFICER & CO-FOUNDER · SOFTWARE & AI/ML ENGINEER
Built web server similar to Node.JS two years before Node.JS was launched.
Doraemon is a form of AGI, why does this blue shiba twin looks like Doraemon with ears?
— David, internal memo · jan '26
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AGI is near.
We're just 1 or 2 breakthroughs away from AGI.
Decentralised AGI.
Human is a form of AGI, and we should own a personal pre-AGI.
Your twin should behave like you.
Your Twin trains on you. It speaks only for you. It leaves with you.
We're gathering our Technical Advisory Board.
A small group. High signal.
The best developer is not the one who codes the fastest, but the one who thinks the deepest.
