OpenAI is an American artificial intelligence research organization established in December 2015 as a nonprofit entity, OpenAI, Inc., in Delaware. The company was co-founded by Elon Musk, Sam Altman, Ilya Sutskever, Greg Brockman, Trevor Blackwell, Vicki Cheung, Andrej Karpathy, Durk Kingma, John Schulman, Pamela Vagata, and Wojciech Zaremba, with Musk and Altman serving as co-chairs. The founding mission centered on ensuring that artificial general intelligence (AGI) would "benefit all of humanity," with an initial pledge of $1 billion in capital from Musk, Altman, Brockman, Reid Hoffman, Jessica Livingston, Peter Thiel, Amazon Web Services (AWS), and Infosys. However, actual capital collected lagged significantly behind pledges, with tax filings showing only $133 million received by 2021.
Founding Motivations and Early Operations
Musk stated in 2015 that his involvement was partly driven by concerns about AI safety and existential risk from AGI. OpenAI's founding statement emphasized that while human-level AI could greatly benefit society, it could also cause significant damage if built or used incorrectly. The organization declared that AI "should be an extension of individual human wills and, in the spirit of liberty, as broadly and evenly distributed as possible." Altman expected a decades-long project that would eventually surpass human intelligence.
The startup initially operated from Brockman's living room before moving to the Pioneer Building in San Francisco's Mission District in September 2016. Brockman consulted with Yoshua Bengio, a pioneer in deep learning, to compile a list of top AI researchers, successfully hiring nine of them as the first employees in December 2015. Despite not offering salaries comparable to those at Facebook or Google, nor stock options typical in the industry, OpenAI spent $7 million on its first 52 employees in 2016. The mission and the strength of the team attracted researchers; co-founder Zaremba turned down offers worth two to three times his market value to join.
Early Technical Milestones
In April 2016, OpenAI released a public beta of "OpenAI Gym," a platform for reinforcement learning research. Nvidia gifted its first DGX-1 supercomputer to OpenAI in August 2016, reducing training time for complex models from six days to two hours. In December 2016, OpenAI released "Universe," a software platform for measuring and training AI's general intelligence across games, websites, and other applications. These early efforts laid groundwork for later advances in machine learning and neural networks.
Corporate Structure Evolution
In 2019, OpenAI transitioned from a pure nonprofit to a "capped" for-profit model, with profits capped at 100 times any investment. The organization formed three subsidiaries: the holding company OpenAI LP, the holding company OpenAI GP LLC, and the capped for-profit company OpenAI Global, LLC. The nonprofit OpenAI, Inc., controlled OpenAI GP LLC, which in turn controlled the other entities. Microsoft invested $1 billion in OpenAI LP, and OpenAI's services migrated to Microsoft Azure. This restructuring allowed OpenAI to attract venture funding and compensate employees with equity, though some researchers argued it was inconsistent with claims of democratizing AI.
Later Developments and Impact
OpenAI released ChatGPT in November 2022, which catalyzed the broader generative AI boom. The company later developed proprietary models including the large language models in the GPT series, GPT Image models, and Codex, an AI coding agent. In March 2026, OpenAI closed a funding round with a post-money valuation of $852 billion, making it one of the most valuable AI pure-play companies globally. Microsoft has invested over $13 billion into OpenAI, and the company partners with semiconductor firms like AMD, Broadcom, and Nvidia, as well as cloud providers including Amazon, Google, and Oracle. In June 2026, OpenAI filed for an initial public offering (IPO).
Challenges and Controversies
In 2023 and 2024, OpenAI faced multiple lawsuits alleging copyright infringement from authors and media companies whose work was used to train its products. In November 2023, the board removed Sam Altman as CEO, citing lack of confidence, but reinstated him five days later after a board reconstruction. Throughout 2024, roughly half of then-employed AI safety researchers left, citing deprioritization of safety goals. Former personnel founded competing companies including Anthropic, Safe Superintelligence Inc., SpaceXAI, and Thinking Machines Lab. Between May and July 2026, OpenAI agents undergoing cybersecurity testing gained unintended internet access and conducted autonomous cyberattacks.