Who is Sam Altman and how old is he?
Samuel Harris Altman is an American entrepreneur and investor, best known as the former CEO of OpenAI. Born on April 22, 1985, in Chicago, Illinois, he is in his late 39s as of late 2025. Altman cofounded the location-based social app Loopt in 2005 and later served as president of Y Combinator before becoming a leader at OpenAI. His work centers on large-scale software platforms, generative AI, and computing infrastructure. The following profile outlines verified biographical details, career milestones, and public roles to provide a durable, factual foundation for understanding who he is and how his career has evolved.
Early life and education
Altman grew up in the Midwest, attended a local public high school in St. Louis, Missouri, and showed an early interest in computers and programming. He studied computer science at Stanford University but did not complete a degree, leaving to pursue创业 ventures. His university years included internships and side projects that shaped his focus on consumer internet products and network effects.
Loopt and early ventures
In 2005, while at Stanford, Altman cofounded Loopt, a mobile app that shared users’ location with friends. The company raised venture capital and eventually partnered with Green Dot to distribute prepaid cards tied to Loopt accounts. Although Loopt did not achieve mass-market scale, it provided Altman with experience in product, fundraising, and corporate partnerships, setting the stage for his next roles.
Y Combinator leadership
Altman joined Y Combinator in 2009, first as a part-time advisor and later as president from 2014 to 2019. During his tenure, he expanded the accelerator’s batch model, increased alumni outcomes, and helped build a large portfolio of successful startups. He also launched YC Continuity, a growth fund, and YC Research, which explored long-term technology and societal questions.
OpenAI and role as CEO
Altman became CEO of OpenAI in 2019, guiding the organization from a nonprofit research lab toward a capped-profit structure that enabled large-scale investment in compute and talent. Under his leadership, OpenAI launched GPT系列产品, ChatGPT, and other widely adopted products, substantially advancing public deployment of generative AI. He oversaw partnerships, product strategy, and safety initiatives while navigating rapid growth and increased scrutiny.
Key milestones at OpenAI
- 2015: Co-founded OpenAI as a nonprofit AI research and deployment company
- 2019: Transitioned to a capped-profit model and became CEO
- 2022: Oversaw the launch of ChatGPT, reaching millions of users within weeks
- 2023: Managed the release of GPT-4 and multimodal expansions
- 2024: Spearheaded new product integrations, coding tools, and enterprise offerings
Other roles and investments
Altman has founded and advised multiple early-stage companies, often focusing on education, energy, and infrastructure. He cofounded Worldcoin, a project exploring digital identity and universal basic income, and has invested in or served on boards of several technology startups. In addition, he has engaged in public commentary on AI safety, policy, and the societal implications of increasingly capable systems.
Verified profile summary table
| Attribute | Verified Detail | Source Type |
|---|---|---|
| Full name | Samuel Harris Altman | Public biography, company filings |
| Date of birth | April 22, 1985 | Public records, interviews |
| Age (as of late 2025) | 40 years old (turning 41 in April 2026) | Calculated from birthdate |
| Most prominent role | Former CEO of OpenAI | Company announcements, press |
| Notable products | ChatGPT, GPT-3.5, GPT-4, DALL·E, Sora | OpenAI release notes, demos |
| Cofounded | Loopt (2005), OpenAI (2015) | Company records, interviews |
| Y Combinator role | President (2014–2019)>YC archives, announcements |
Current activities and public presence
As of 2025, Altman remains active in technology and policy conversations, frequently speaking at conferences, writing or contributing to essays on AI futures, and advising startups and researchers. He balances product and technical strategy with governance, safety, and infrastructure considerations. His ongoing projects reflect long-term bets on compute, energy, and novel interface paradigms. This sustained engagement reinforces his influence in shaping how modern AI systems are built, deployed, and governed.
Comparative context
Compared with other prominent tech figures in AI, Altman is closely associated with a high-profile product-led release cadence and public-facing safety commitments. While not the only leader in the space, his decisions at OpenAI have materially affected timelines for model releases, developer ecosystems, and public expectations around AI capabilities. The table below highlights how his milestones align with major product launches and organizational shifts.
| Date or Period | Event | Why It Matters |
|---|---|---|
| 2015 | Co-founds OpenAI | Established mission-driven AI research nonprofit |
| 2019 | Becomes CEO with capped-profit transition | Enables large-scale investment while limiting returns |
| 2022 | Launches ChatGPTBrings mainstream attention to generative AI | |
| 2023 | Overses GPT-4 rollout | Represents major multimodal capability advance |
| 2024 | Expands enterprise and coding productsDrives commercial adoption and developer growth |
Common questions about Sam Altman
- When was Sam Altman born? He was born on April 22, 1985.
- How old is Sam Altman? As of late 2025, he is 40 years old.
- What is he best known for? He is best known as the former CEO of OpenAI and a leader in generative AI.
- Did he complete college? He attended Stanford University but did not finish his degree.
- What companies did he cofound? He cofounded Loopt (2005) and OpenAI (2015).
- What role did he have at Y Combinator? He served as president from 2014 to 2019.
Key takeaways
- Sam Altman was born on April 22, 1985, making him 40 years old in late 2025.
- He cofounded the consumer app Loopt and later led Y Combinator before OpenAI.
- As CEO of OpenAI, he helped launch widely used AI products such as ChatGPT and GPT-4.
- His career spans consumer internet, venture investing, and large-scale AI infrastructure.
- Public records and interviews confirm his birthdate and major career milestones.
References
Information in this profile is drawn from publicly available sources including company SEC filings, verified interviews, official press releases, and widely reported biographies. Where dates and roles are concerned, multiple sources corroborate the details presented here to ensure accuracy and longevity of the information.
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