A new startup called Arize AI is building what it calls a real-time analytics platform for “observability” in artificial intelligence and machine learning. The company is led by CEO Jason Lopatecki, who has also served as chief strategy officer and chief innovation officer at TubeMogul, the video ad company acquired by Adobe. TubeMogul’s co-founder and former CEO Brett Wilson is an investor and board member. While Arize AI is only coming out of stealth today, it’s already raised $4 million in funding led by Foundation Capital, with participation from Wilson and Trinity Ventures.