Sam Altman (Wikipedia)Samuel Harris Altman (born April 22, 1985) is an American entrepreneur and investor best known as the chief executive officer of OpenAI since 2019 (he was briefly fired and reinstated in November 2023). He is also the chairman of clean energy companies Oklo Inc. and Helion Energy. Altman is considered to be one of the leading figures of the AI boom. He dropped out of Stanford University after two years and founded Loopt, a mobile social networking service, raising more than $30 million in venture capital. In 2011, Altman joined Y Combinator, a startup accelerator, and was its president from 2014 to 2019.