Basis Set Ventures

Basis Set Ventures is an AI-native venture capital firm founded in 2017 by Dr. Lan Xuezhao in San Francisco. It invests in early-stage startups harnessing artificial intelligence to boost human productivity, having raised a $250M Fund IV in 2026, bringing total AUM to roughly $850M. The firm builds and uses its own AI tools internally, including Parasail, Tigris, Spice AI, and Simular, and offers founders a "24/7 concierge team" for go-to-market, hiring, and product support, alongside an AI Fellows program. Its portfolio spans AI infrastructure, robotics, and enterprise SaaS, including early investments in Scale AI, Quince, Path Robotics, Rasa, Sakana AI, and Mem0. The firm's investment approach applies data-driven, psychometric analysis to founder evaluation; specific check sizes are not publicly disclosed, though it typically leads seed-stage rounds.