Beichuan Yu
于北川
Beichuan Yu is a 1996-born AI founder who was among Douyin's first campus-hired product managers and an early core member of the team, living through its growth from tens of millions to 600 million daily active users and helping build its early social-relationship features . After ByteDance, he entered the AI wave in 2023 with an "AI influencer marketing" startup that quickly turned cash-flow positive and secured Sequoia Capital backing . He is now founder of Lessie AI (also referred to as 指数引力 / Zhishu Yinli), working on an AI-powered professional networking product described as an "AI LinkedIn" . In a 2025 interview, he reflected that his time at Douyin gave him an inflated ego, realizing only later how much of his success had been environmental .
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Coverage
Little Genius, All-Rounder, or Aesthete? 9 Founders on How AI Companies Define Great Talent | Ronghui
AI Native Founder Live
From Witnessing Douyin's Growth from 30 Million to 600 Million Users, He Decided to Use AI to Reimagine "Finding People" | A Conversation with Beichuan Yu, Founder of Lessie AI, on the New Gateway to Social
For the first time, AI can map the dynamics between people. It will tell you who you most need to meet right now.
Hongshan's Seed Fund Backs New Startup Building an AI-Powered LinkedIn
Can AI connect people with one another?
