OpenAI makes second move toward RIA business with catch-and-kill of financial planning website, Hiro; artificial intelligence is powerful, and Sam Altman is the wildcard RIABizOpenAI buys personal finance fintech Hiro Yahoo FinanceOpenAI Acquires AI Financial Planning Startup Hiro in Strategic Move Next Unicorn VenturesOpenAI has bought AI personal finance startup Hiro TechCrunchOpenAI buys its second startup in a month Engadget