Antioch raises $32M for physical-AI simulation

Antioch raised $32 million in Series A funding led by Greylock to scale high-fidelity simulation for physical-AI teams, according to its funding announcement. The platform calibrates simulations to customer hardware and runs thousands of parallel evaluations before deployment; Amazon’s Ring says its simulated results have matched held-out physical tests. The Unitree deployment read shows why shipment counts are not capability evidence: robotics builders should spend new capital on sim-to-real validation loops, but demand held-out hardware results before treating simulation throughput as production reliability.