Physical AI simulation startup Antioch raises $32M Series A led by Greylock
Scobleizer · x · 2026-09-09
Antioch announced a $32 million Series A led by Greylock, with participation from A VC, Category Ventures, Box Group, Icehouse Ventures and angels.
Founder Harry Mellsop argues physical AI is the defining opportunity of our lifetime, but the industry is bottlenecked by development speed: iteration is hardware-bound, testing is slow and costly, and data is scarce. Antioch's answer is scaled, high-fidelity simulation — autonomy teams in advanced manufacturing and humanoid robotics use it to validate systems at scale and generate large volumes of synthetic training data.
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