🇺🇸 Sam Altman

On November 30, 2022, OpenAI released ChatGPT as a research preview. Within five days, one million people had used it. Within two months, it had 100 million users — the fastest adoption of any consumer technology in history. Sam Altman, the thirty-seven-year-old CEO of OpenAI, had not planned for this scale of response. ChatGPT was intended as a demonstration of what the company's latest model could do. What it demonstrated instead was that the general public, given access to a genuinely capable AI system through a natural conversational interface, would adopt it with a speed that shocked even its creators. The AI age, which technologists had been anticipating for decades, arrived in one Tuesday morning product launch.

Samuel H. Altman was born on April 22, 1985, in Chicago, Illinois, and grew up in St. Louis, Missouri. He was a precocious child who taught himself to code at eight years old on a Macintosh, and grew up reading Asimov's science fiction and thinking seriously about artificial intelligence as a genuine future possibility rather than a literary device. He enrolled at Stanford University to study computer science but left after his sophomore year — in 2005 — to found a mobile social networking app called Loopt with two Stanford classmates. Loopt allowed friends to share their location with each other in real time. It was acquired by Green Dot Corporation in 2012 for $43.4 million, not a spectacular outcome by Silicon Valley standards, but enough to establish Altman's reputation as a founder and his financial independence.

The trajectory-altering moment came in 2011 when Altman was accepted into Y Combinator, the most prestigious startup accelerator in Silicon Valley. Y Combinator alumni include Dropbox, Airbnb, Stripe, and thousands of other companies; its acceptance rate is lower than Harvard's. Altman so impressed the YC leadership that Paul Graham, the organization's founder, appointed him president of Y Combinator in 2014 when Graham stepped back. Altman was twenty-eight years old. Under his leadership YC expanded dramatically — increasing the number of companies in each batch, launching YC Research, and establishing itself as the entry point for the best technical founders in the world. He served as president until 2019, when he left to focus on OpenAI full-time.

OpenAI had been co-founded in December 2015 by Altman, Elon Musk, Greg Brockman, Ilya Sutskever, Wojciech Zaremba, and John Schulman, with a $1 billion founding commitment from Musk, Thiel, Reid Hoffman, and other investors. The founding premise was that artificial general intelligence was coming regardless of whether anyone tried to build it safely, and that it was better for safety-focused researchers to be at the frontier than to cede that ground to developers less focused on safety. This was a genuinely unusual organizational philosophy — a non-profit AI safety research lab that would deliberately build the most powerful AI systems in the world and try to ensure they were beneficial. Musk departed from the board in 2018 over governance disagreements; OpenAI converted to a "capped-profit" structure in 2019, raising $1 billion from Microsoft, a partnership that would eventually grow to $13 billion.

The products that followed defined the contemporary AI landscape. GPT-2 in 2019, GPT-3 in 2020, Codex in 2021, DALL-E in 2021, ChatGPT in 2022, GPT-4 in 2023 — each release moved the frontier of what AI systems could do, and each moved the public perception of AI from science fiction to practical reality. GPT-4 passed the bar exam in the 90th percentile. DALL-E transformed digital art creation. ChatGPT was used by students, lawyers, doctors, programmers, and writers across every industry on earth within months of its release. OpenAI's valuation, $29 billion in 2023, grew to $157 billion by late 2024.

In November 2023, Altman was briefly fired by OpenAI's board in a surprise overnight decision, then reinstated five days later following an employee revolt in which 95% of OpenAI's staff threatened to resign if he was not brought back. The episode was unprecedented in corporate history: a CEO fired, then restored by popular demand from employees, with Microsoft — which had committed $13 billion to the company — essentially validating his return by offering to hire the entire OpenAI staff if necessary. Altman emerged from the episode with his authority enhanced and the board restructured. It was the most dramatic corporate governance crisis in Silicon Valley in decades, and it demonstrated how thoroughly one person had become identified with an organization at the center of the world's most important technological transition.

Altman is unusual among tech CEOs in his willingness to speak openly about AI's existential risks. He has testified before the US Senate, advocated for AI regulation, and written extensively about the possibility that AI could be the most transformative and most dangerous technology humanity has ever created. His net worth, primarily through equity stakes in Helion Energy and other ventures (OpenAI's capped-profit structure limits his equity there), is estimated at several hundred million dollars — modest by the standards of those who have profited most from the AI boom. What he has accumulated instead is influence over the trajectory of the technology that may define the century.