Ex-ByteDance intern raises $30M for stealth China world-models startup
What's the deal? Tian Keyu, a former ByteDance intern and recent Peking University master's graduate, has raised nearly $30 million from investors including 5Y Capital and IDG Capital for an unnamed AI startupDealroom has a profile for this one. Try Dealroom →. The round values the 10-person company at $200 million post-money.
What's the endgame? Tian is building world models — AI systems that simulate real-world physics for applications ranging from robotics to interactive video and autonomous driving. His team has built what he calls a dictionary for AI, with 200,000 symbols unrecognisable to humans, to process video more efficiently.
The approach stems from Tian's paper honoured at NeurIPS 2024, which proposed a more efficient image-generation method that works like a large language model by predicting upcoming pixel clusters. He says the technique can cut the cost of generating a second of video by at least an order of magnitude.
Why now? Investor interest in world models is accelerating. Fei-Fei Li's World Labs was acquired by AMD last month in a multibillion-dollar deal that chief executive officer Lisa Su said was for "access to world-class talent."
Yann LeCun, Meta's former chief AI scientist, raised $1 billion in seed funding for his Advanced Machine Intelligence LabsDealroom has a profile for this one. Try Dealroom →. In China, video generator PixVerseDealroom has a profile for this one. Try Dealroom → and 3D AI developer Vast are already building interactive world models.
The backstory: ByteDance dismissed Tian in 2024 after three years, citing "a serious violation." A court later ordered him to pay US$68.8K — about $75,000 — for breach of contract, after the company sought $1.1 million in damages.
Tian said he shut down another intern's program to free up computing resources for colleagues, acknowledging wrongdoing while framing it as a vigilante act. "It was me fighting fire with fire," he said. "If I could go back with what I know today, I would definitely take a wiser approach."
What could go wrong? The startup has no name, no product, and no business model. Tian said he is not spending time on a consumer product, planning live demonstrations ahead of a full model release in 2027.
The signal: The bet on an unproven founder at such an early stage reflects a broader shift among investors toward backing promising developers over finished products. With heavyweights like Li and LeCun defining the field, world models are emerging as one of AI's most contested frontiers — and China's firms are moving to stake their claim.
Read more: techinasia.com, Bloomberg
Image credit: Generated with Gemini
