OpenAI CEO Sam Altman has become one of the AI industry’s most influential figures since bringing the technology into the mainstream with the launch of ChatGPT in 2022. In much the same way that ChatGPT became shorthand for AI chatbots, Altman is the public face of artificial intelligence itself. With his casual dress and sociable demeanor, he has appeared on countless media outlets, conference stages and legislative hearings to promote his optimistic vision for the ways AI can usher in a new age of innovation, productivity and abundance — while also warning that it has the potential to eliminate jobs and be used in harmful ways.
Who Is Sam Altman?
Sam Altman is the CEO of OpenAI and one of the most influential figures in artificial intelligence. After dropping out of Stanford to launch startup Loopt, he became president of Y Combinator before leading OpenAI and bringing generative AI into the mainstream with ChatGPT.
Once motivated to create systems that prioritize safety over profits, Altman has overseen OpenAI’s transformation from a nonprofit research lab to a for-profit business that is continually developing new models, launching new products and expanding into new markets to generate revenue and scale its computing capacity. Ultimately, Altman says those efforts are aimed at achieving artificial general intelligence (AGI), AI that is capable of matching or surpassing human intelligence across a wide range of tasks, while ensuring it will benefit humanity in the long term.
Altman’s mix of ambition, social skill and techno-optimism have been honed over the course of his life, from a suburban St. Louis upbringing to Silicon Valley, where he spent years building relationships, backing startups and taking big swings on ambitious projects. In this article, we’ll take a deep dive into Altman’s career, investments and what he’s working on next.
Sam Altman’s Early Life and Career
From St. Louis to Silicon Valley
Altman was born in April 1985 in Chicago, but he grew up in Clayton, Missouri, a suburb of St. Louis. The eldest of four children, he received his first computer when he was eight years old and later taught himself to code. He attended John Burroughs School, a private, college-preparatory school, where he came out as gay and gave a speech in front of his classmates on National Coming Out Day.
In 2003, Altman enrolled in Stanford University to study computer science, but he dropped out after his sophomore year, when startup incubator Y Combinator selected his pitch for its Summer Founders Program in 2005. The startup, which would eventually be called Loopt, was a geo-tracking app that could help users locate their friends — two years before the first iPhone launched.
Loopt went on to raise $39 million and land partnerships with mobile carriers like Sprint and Verizon. However, it struggled to catch on with users, and in 2012 Altman sold to fintech company Green Dot for $43.4 million. Altman used that money to launch his own venture fund, Hydrazine Capital, which received a large investment from renowned venture capitalist Peter Thiel.
Taking the Helm at Y Combinator
At just 19 years old, Altman made quite an impression on Y Combinator co-founder Paul Graham, who likened him to a young Bill Gates. Nearly a decade later, Graham chose Altman to succeed him by becoming Y Combinator’s first president. While Loopt may not have been a financial success, Graham said he chose Altman, then 28, because he was both smart and extroverted.
When Altman took the job in 2014, Y Combinator had already helped propel more than 600 startups, including household names like Dropbox, Airbnb and Stripe. Over his five-year tenure, Altman expanded the size of cohorts, launched the YC Continuity Fund to support YC alumni and donated $10 million to the creation of the YC Research fund, which would go on to support OpenAI. According to The New Yorker, though, investors began to complain to Graham that Altman’s personal investments in Y Combinator startups prevented other investors from participating in funding rounds. Graham also said that Altman’s work with OpenAI was conflicting with his Y Combinator role. In 2019, Altman agreed to step down and focus on leading OpenAI.
The Founding and Evolution of OpenAI
Altman, Elon Musk and four other co-founders launched OpenAI in 2015 out of a concern that Google DeepMind was not prioritizing safety in its pursuit of artificial general intelligence. As such, OpenAI was originally established as a nonprofit to ensure that AGI “benefits all of humanity.”
However, the need for more computing power inspired the co-founders to consider a for-profit arm that could raise capital. After a power struggle over the structure of the for-profit organization, Musk stepped down from the organization, and Altman was appointed CEO. OpenAI then created a capped, for-profit arm that reports to the nonprofit parent company governed by a board of directors. This for-profit structure allowed OpenAI to enter into a partnership with Microsoft, which then invested an initial $1 billion in the company.
OpenAI, which had already launched its GPT large language model, went on to release the more sophisticated GPT-3 model in 2020 and AI image generator Dall-E in 2021 before releasing its signature ChatGPT chatbot in November 2022, setting off an AI arms race that sent Google — along with former Altman colleagues Dario Amodei and Elon Musk — on a rush to develop their own competing LLMs. Amid this growing buzz, Microsoft invested another $10 billion in OpenAI in January 2023.
In November 2023, OpenAI Chief Scientist Ilya Sutskever, with help from then-CTO Mira Murati, provided the company’s board of directors with evidence that Altman had misrepresented facts about internal safety protocols, according to The New Yorker. The board then voted to fire Altman, prompting him to appeal to Microsoft CEO Satya Nadella and other investors. OpenAI co-founder Greg Brockman resigned in protest, and more than 700 employees, including Murati and Sutskever, signed a petition calling for the board to resign and Altman to be reinstated. Within the week, the board was replaced and Altman was rehired. The following month, Time magazine named Altman CEO of the Year.
Musk, who went on to launch his own AI company xAI, sued Altman and OpenAI in 2024, alleging that the organization breached its founding agreement by transitioning to a for-profit company. Musk eventually lost the lawsuit, and OpenAI restructured as a public benefit corporation in October 2025, removing fundraising limitations and paving the way for the company to eventually go public.
Following President Donald Trump’s 2024 election win, Altman moved quickly to make in-roads with the new administration by donating to Trump’s inaugural fund and attending his inauguration. He also arranged for Trump to announce the Stargate Project, a joint initiative between OpenAI, SoftBank and Oracle to invest $500 billion in the construction of 20 AI data centers over the next four years.
Sam Altman’s Major Investments and Net Worth
Despite leading a company worth hundreds of billions of dollars, Altman holds no equity in OpenAI, and he reportedly collects a salary of just $76,001. And yet, he’s a billionaire with a net worth of $3.4 billion, according to Forbes.
Altman’s wealth mostly comes from his investments in other tech companies — many of which he made while leading Y Combinator. All told, Altman has made an estimated 400 of these investments, but here are some of his largest known holdings:
- Stripe: According to The Wall Street Journal, Altman invested $15,000 for 2 percent ownership in Stripe in 2009. The fintech company is now worth $159 billion.
- Airbnb: In 2008, he invested $100,000 in Airbnb, according to Fortune.
- Uber: Altman also made an early $100,000 investment in Uber, according to Fortune.
- Reddit: In 2014, Hydrazine invested $28 million in Reddit, according to The Wall Street Journal. Altman owns 7.6 percent of the social media platform, which went public in 2024 and is now worth $35 billion.
- Asana: In 2016, Altman led a $50 million Series C funding round in the project management platform.
- Helion Energy: One of Altman’s largest holdings is in nuclear fusion startup Helion Energy. He invested $375 million in the startup in 2021, and his current stake is estimated to be $1.65 billion, according to Forbes. In 2023, Microsoft, which had a partnership with OpenAI, agreed to buy power from Helion, and in 2026, Altman stepped down as Helion’s board chair amid rumors of OpenAI signing a similar deal.
- Retro Biosciences: In 2022, Altman invested $180 million in longevity startup Retro Biosciences, telling MIT Technology Review that he “basically just took all my liquid net worth and put it into [Helion Energy and Retro Biosciences].”
- Stoke Space: Altman has also invested in sectors dominated by Musk’s companies, presumably as part of their ongoing feud. Hydrazine has invested in rocket manufacturer Stoke Space, according to The Wall Street Journal.
- Neuralink: Altman has also invested in Neuralink, Musk’s brain-computer interface startup, as recently as 2021. But in 2025 he co-founded a competitor, Merge Labs. OpenAI has invested in Merge Labs, but Altman does not own equity in the startup, according to The Wall Street Journal.
What Is Sam Altman Working on Next?
OpenAI IPO
OpenAI is one of the most highly anticipated IPOs of 2026, but going public would also force the company to open up its financial books. But since it doesn’t expect to be profitable until at least 2030, the move is unpopular with investors that have grown increasingly wary of AI spending. OpenAI was last valued at $852 billion, but Altman has said an IPO that values the company at anything less than $1 trillion would be a non-starter, leading some to believe the company may wait until 2027 to go public. While a Wall Street debut might bring in more funding, Altman told the Big Technology Podcast that he is “zero percent excited” about running a public company, adding that it would be “really annoying” in some ways.
Custom Chips
In June 2026, OpenAI announced that it partnered with Broadcom to produce its first AI chip, called Jalapeño, which is expected to be deployed by the end of 2026. The chip was designed for AI inference, and it is informed by the systems in ChatGPT, Codex and other OpenAI products. By designing its own AI chip, OpenAI hopes it can boost compute efficiency, which will improve AI training and produce more capable AI models and products.
Mystery Device
OpenAI is also working on expanding into the hardware realm with a device designed by legendary Apple designer Jony Ive. While specific details about the device have not been officially released, a recent report from Bloomberg suggests it will be a portable smart speaker that can answer questions, play media and control smart home appliances.
Frequently Asked Questions
Did Sam Altman graduate from Stanford?
No. Sam Altman enrolled at Stanford University in 2003 to study computer science but dropped out during his sophomore year to launch Loopt, a location-sharing startup that was eventually sold to fintech company Green Dot for more than $40 million.
Does Sam Altman own OpenAI?
No, Altman does not have equity in OpenAI. The company is governed by a nonprofit parent organization, though it also operates a public benefit corporation that can raise outside investment.
Did Sam Altman and Elon Musk found OpenAI together?
Yes, Altman and Musk were among OpenAI’s six co-founders when the organization launched in 2015. Musk later left the company after disagreements over its direction and has since become one of OpenAI’s most vocal critics.
Is Sam Altman a billionaire?
Yes. As of July 2026, Sam Altman has an estimated net worth of about $3.4 billion, according to Forbes.
