Physical AI simulation startup Antioch raises $32M Series A led by Greylock
_shreya_s · x · 2026-09-09
Antioch announced a $32 million Series A led by Greylock, with participation from A Capital, Category Ventures, BoxGroup, Icehouse Ventures and angels.
The pitch: while AI has drastically accelerated software development, physical autonomy is still constrained by slow, expensive hardware iteration. Antioch lets physical AI teams build, test, and validate systems at the speed of software. Dozens of teams including Amazon's Ring already use it to bring physical products to market faster; partners include NVIDIA Robotics and Nebius. Greylock argues scaled, high-fidelity simulation will be critical infrastructure for the next generation of physical AI companies.
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