Siani is a trauma-informed AI companion that engages people daily through voice and visuals, capturing real-time data on mood, stress, goals, and life barriers like housing, food, and transportation. Factors driving 93% of health outcomes but invisible to health systems. Preventing just one avoidable ER visit saves $2,600. With over 13 million avoidable ER visits each year in the U.S., Siani has the potential to unlock tens of billions in savings while improving lives every day.