Sam Altman — Notable For: CEO of OpenAI; previously president of Y Combinator; central figure in the commercialization of large language models

NoteThe source directly confirms all three components of the claim: (1) CEO of OpenAI — stated multiple times, including 'chief executive officer (CEO) of the artificial intelligence research organization OpenAI since 2019'; (2) previously president of Y Combinator — confirmed as 'president from 2014 to 2019'; (3) central figure in the commercialization of large language models — confirmed by the statement that he 'has been described as one of the leading figures of the AI boom' after 'overseen the launch of ChatGPT in November 2022'. All three elements are explicitly supported by the source text.