Phaidra

Phaidra is a Seattle-based industrial AI company that builds self-learning, reinforcement-learning control agents for the world's most complex mission-critical facilities - chief among them the data centers powering the AI boom. Founded in 2019 by alumni of Google DeepMind and the HVAC and defense industries, Phaidra's software plugs into existing building automation and SCADA systems without new hardware, learns a facility's behavior, and continuously adjusts cooling, power and workload setpoints to cut energy use while improving reliability. The company raised a $50M+ Series B in October 2025 led by Collaborative Fund with participation from NVIDIA, positioning itself to make 'AI factories' radically more resource-efficient.