Prox builds AI technical support for complex physical products. Its multimodal agent platform can generate wiring diagrams, share CAD models, process field videos, and provide voice support, building knowledge engines that understand complicated physical products. The company targets industries such as HVAC, EV charging, industrial equipment, and manufacturing where specialized technical expertise is scarce. Prox is part of Y Combinator's Fall 2025 batch and is based in San Francisco.