There is a moment in every industry when someone stops playing by the existing rules and rewrites them entirely. For artificial intelligence, that moment arrived on November 30, 2022 — the day OpenAI released ChatGPT. Within five days, a million people had signed up. Within two months, it had reached a hundred million users, becoming the fastest-growing consumer product in recorded history. Behind it all stood one man who had spent years trying to convince the world that this moment was coming: Sam Altman.
Not everyone believed him. That’s what makes the story worth telling.
An Eight-Year-Old With a Macintosh
Samuel Harris Altman was born on April 22, 1985, in Chicago, Illinois, and grew up in the suburbs of St. Louis, Missouri. By the time he was eight years old, he had already received his first Apple Macintosh — and didn’t just use it, he disassembled it to understand how it worked. That instinct — to get under the hood, to understand systems at their most fundamental level — never left him.
He enrolled at Stanford University to study computer science but left after two years when an idea demanded his full attention. In 2005, he co-founded Loopt, a location-sharing social network — one of the first of its kind — which raised over $30 million in venture capital and was eventually acquired by Green Dot Corporation for $43.4 million. He was barely out of his teens. It wasn’t a moonshot. It was a warm-up.
The Startup Whisperer
What came next shaped Silicon Valley’s next generation. In 2011, Altman joined Y Combinator as a partner — the storied startup accelerator that gave the world Airbnb, Stripe, Dropbox, and Reddit. By 2014, he was its president. During his tenure, Y Combinator backed nearly 1,900 companies and grew its influence tenfold. Altman didn’t just run the programme — he became the connective tissue of an entire generation of founders.
He was the rare investor who could spot the signal in a pitch before the founder had finished the sentence. And he was equally rare in being willing to say, plainly and without apology, what he believed: that artificial intelligence was not a distant idea but an imminent force, and that the organisations building it had an obligation to do so responsibly.
The Most Important Project of This Era
In December 2015, Altman co-founded OpenAI alongside Greg Brockman, Ilya Sutskever, Elon Musk, and others. It launched as a nonprofit research laboratory with an unusual premise: build artificial general intelligence — AI that can do anything a human can — and ensure it benefits all of humanity, not just a handful of shareholders. Initial pledges for funding reached $1 billion.
Musk departed in 2018 over what he described as a potential conflict of interest with Tesla. The loss of his financial backing put OpenAI in a difficult position. Altman navigated the organisation through that turbulence and, in 2019, stepped away from Y Combinator entirely to lead OpenAI full-time as CEO. The company transitioned to a capped-profit structure, partnered with Microsoft, and began the work that would eventually change the world.
The rest is history — though history of a particularly chaotic kind.
Five Days That Shook Silicon Valley
November 2023 was the strangest week in OpenAI’s short but turbulent history. On November 17, the company’s board abruptly fired Altman as CEO, citing that he had not been ‘consistently candid’ in his communications with them. The announcement sent shockwaves through the industry. Within hours, Greg Brockman resigned. Within days, over 700 of OpenAI’s roughly 770 employees — including board member Ilya Sutskever, who had been involved in the original decision — signed an open letter threatening to follow Altman to Microsoft unless he was reinstated.
Microsoft CEO Satya Nadella had already offered Altman a role leading a new AI research team. The negotiation that followed — played out in real time across social media, boardrooms, and newsrooms — ended with Altman returning to OpenAI, a reconstructed board, and a company more unified than it had been before the crisis began. The episode demonstrated something the entire industry had suspected: that Altman was not merely the CEO of OpenAI — he was, in many respects, the reason people believed in it.
Rewriting the Scale of Ambition
By early 2025, OpenAI’s valuation had reached $300 billion following a major funding round led by SoftBank. Then, on January 21, 2025, Altman stood beside President Donald Trump at the White House to announce Stargate — a $500 billion joint venture between OpenAI, SoftBank, Oracle, and MGX — described by Trump as ‘the largest AI infrastructure project in history.’ Altman called it ‘the most important project of this era.’
The company had earned approximately $3.7 billion from ChatGPT in 2024 alone, with projections suggesting revenues could reach $11 billion in 2025. ChatGPT Enterprise crossed $1 billion in revenue independently. OpenAI’s AI models — including GPT-4o, the o1 reasoning series, and the Sora text-to-video system — had become embedded in the workflows of enterprises, developers, governments, and individuals across the globe. In a remarkable signal of reach, one of OpenAI’s experimental models performed at gold-medal level at the International Mathematical Olympiad in July 2025.
What Drives the Machine
Altman has never held equity in OpenAI — a deliberate choice he made at the founding. He earns $76,000 a year as CEO. His wealth comes from early-stage investments in companies like Stripe and Reddit, whose shares alone climbed to $1.4 billion in value by late 2024. He and his husband Oliver Mulherin signed the Giving Pledge in 2024, committing to donate most of their fortune to charitable causes.
In his September 2024 essay ‘The Intelligence Age,’ Altman laid out his vision plainly: that superintelligence is coming within a matter of years, that the cost of using AI drops roughly ten times every twelve months, and that this compounding acceleration will transform what it means to be productive, creative, or competitive in any industry. The essay was not written for consumers. It was a statement of intent — directed at every enterprise leader, policymaker, and technologist who still thought this moment could be managed at a comfortable distance.
