a16z leads $16M seed for AI data startup Preference Model
What's the deal? Preference ModelDealroom has a profile for this one. Try Dealroom →, a superintelligence data research company, emerged from stealth on October 7, 2026, with a $16 million seed round led by Andreessen Horowitz (a16z). SignalFire, South Park Commons, and Scale AngelsDealroom has a profile for this one. Try Dealroom → also joined, alongside angel investors Fei-Fei Li, Ian GoodfellowDealroom has a profile for this one. Try Dealroom →, and Julian Schrittwieser.
What's the endgame? Alongside the raise, the company is open-sourcing Karotte, its framework for building reinforcement learning (RL) environments that resist reward hacks. Over the past year, it built RL environments for several frontier labs.
Why now? Karotte has been hardened through more than a million evaluation runs and controlled red-teaming. That track record underpins the company's pitch to labs training advanced AI systems.
The signal: At $16 million, the seed ranks in the 98th percentile of all enterprise software seed rounds on record — a sign of how aggressively investors are funding the data and training infrastructure behind frontier AI.
Read more: wsgr.com
Image credit: Generated with Gemini
