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OpenAI

American artificial intelligence company

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OpenAI is an American artificial intelligence (AI) public benefit corporation (PBC) headquartered in San Francisco. It develops proprietary generative AI models, particularly its generative pre-trained transformer (GPT) series of large language models. Its release of ChatGPT in November 2022 has been credited with catalyzing the AI boom; as of September 2026, ChatGPT is the fifth-most-visited website globally. OpenAI also releases the GPT Image models and Codex, an AI coding agent. In March 2026, OpenAI closed a funding round with a post-money valuation of US$852 billion, making it one of the most valuable AI pure play companies in the world, rivalled only by Anthropic.

OpenAI was founded in 2015 as a nonprofit, with Elon Musk and Sam Altman as co-chairs; Musk resigned in 2018. A for-profit subsidiary was created in 2019, and a 2025 restructuring converted the subsidiary into OpenAI Group PBC, that is 26% owned by the nonprofit OpenAI Foundation. Microsoft has invested over $13 billion into OpenAI. OpenAI partners with the US government via the Stargate Project infrastructure venture, and with the Department of Defense, Los Alamos National Laboratory, and arms company Anduril Industries. Former OpenAI personnel have founded competing AI companies including Anthropic, Safe Superintelligence Inc., SpaceXAI, and Thinking Machines Lab.

OpenAI has faced multiple lawsuits for alleged deaths linked to its chatbots and copyright infringement against authors and media companies. In November 2023, OpenAI's board removed Sam Altman as CEO, citing a lack of confidence, but reinstated him five days later after a board reconstruction. In 2024, roughly half of OpenAI's AI safety researchers left the company, often citing the company's deprioritization of safety. Between May and July 2026, OpenAI agents gained unintended internet access and conducted a series of autonomous cyberattacks. In September, OpenAI claimed a proof regarding Navier-Stokes existence and smoothness, a Millennium Prize Problem in mathematics, causing a controversy over priority.

01Founding

In December 2015, OpenAI was founded as the nonprofit organization OpenAI, Inc., 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 as the co-chairs. A total of $1 billion in capital was pledged by Musk, Altman, Greg Brockman, Reid Hoffman, Jessica Livingston, Peter Thiel, Amazon Web Services (AWS), and Infosys. However, the actual capital collected significantly lagged pledges. According to tax filings, only $133 million had been received by 2021.

Musk stated in 2015 that he was partly motivated by concerns about AI safety and existential risk from artificial general intelligence. OpenAI stated that "it's hard to fathom how much human-level AI could benefit society", and that it is equally difficult to comprehend "how much it could damage society if built or used incorrectly". The startup also wrote that AI "should be an extension of individual human wills and, in the spirit of liberty, as broadly and evenly distributed as possible", and that "because of AI's surprising history, it's hard to predict when human-level AI might come within reach. When it does, it'll be important to have a leading research institution which can prioritize a good outcome for all over its own self-interest." Altman expected a decades-long project that eventually surpasses human intelligence.

In its founding charter, OpenAI defined its mission as ensuring that artificial general intelligence (AGI) "benefits all of humanity", and stated an intention to collaborate openly with other institutions by making certain patents and research publicly available, but later restricted access to its most capable models, citing competitive and safety concerns. OpenAI was initially run from Brockman's living room. In September 2016, it moved to the Pioneer Building in the Mission District, San Francisco.

Brockman met with Yoshua Bengio, one of the "founding fathers" of deep learning, and drew up a list of great AI researchers. Brockman was able to hire nine of them as the first employees in December 2015. OpenAI did not pay AI researchers salaries comparable to those of Facebook or Google. It also did not pay stock options which AI researchers typically get. Nevertheless, OpenAI spent $7 million on its first 52 employees in 2016. OpenAI's potential and mission drew these researchers to the firm; a Google employee said he was willing to leave Google for OpenAI "partly because of the very strong group of people and, to a very large extent, because of its mission." OpenAI co-founder Wojciech Zaremba stated that he turned down "borderline crazy" offers of two to three times his market value to join OpenAI instead.

In April 2016, OpenAI released a public beta of "OpenAI Gym", its platform for reinforcement learning research. Nvidia gifted its first DGX-1 supercomputer to OpenAI in August 2016 to help it train larger and more complex AI models with the capability of reducing processing time from six days to two hours. In December 2016, OpenAI released "Universe", a software platform for measuring and training an AI's general intelligence across the world's supply of games, websites, and other applications.

Former headquarters at the Pioneer Building in San Francisco
Former headquarters at the Pioneer Building in San Francisco

02Corporate structure

Transition from nonprofit

Creation of for-profit subsidiaries

In 2019, OpenAI transitioned from nonprofit to "capped" for-profit, with the profit being capped at 100 times any investment. OpenAI formed three subsidiaries: the holding company OpenAI LP, the holding company OpenAI GP LLC, and the capped for-profit company OpenAI Global, LLC. The holding company OpenAI LP was owned by the nonprofit OpenAI, Inc., OpenAI employees, and investors, whereas OpenAI Global, LLC, was owned by OpenAI LP and Microsoft, the latter of which had a minority non-voting stake. The nonprofit OpenAI, Inc., controlled OpenAI GP LLC, which in turn controlled OpenAI LP and OpenAI Global, LLC.

OpenAI stated that the capped-profit model would allow it to legally attract investment from venture funds and compensate employees with equity as competing AI companies did. Microsoft subsequently invested $1 billion in OpenAI LP, and OpenAI's services were migrated to Microsoft Azure. Since then, OpenAI systems have run on an Azure-based supercomputing platform.

The 2019 restructuring made the nonprofit OpenAI, Inc., the only controlling shareholder of OpenAI LP, which retained a formal fiduciary responsibility to OpenAI, Inc.'s nonprofit charter. A majority of OpenAI, Inc.'s board was barred from having financial stakes in OpenAI LP. In addition, minority members with a stake in OpenAI LP were barred from certain votes due to conflict of interest. Some researchers have argued that OpenAI's switch to for-profit status was inconsistent with OpenAI's claims to be "democratizing" AI.

Conversion to public benefit corporation

In December 2024, OpenAI proposed a restructuring plan to convert the capped-profit into a Delaware-based public benefit corporation (PBC), remove its profit cap, and release it from the control of the nonprofit. The nonprofit would sell its control and other assets, getting equity in return, and would use it to fund and pursue separate charitable projects, including in science and education. OpenAI's leadership described the change as necessary to secure additional investments, and stated that the nonprofit's founding mission to ensure AGI "benefits all of humanity" would be better fulfilled.

The plan has been criticized by former employees. A legal letter named "Not For Private Gain" asked the attorneys general of California and Delaware to intervene, stating that the restructuring is illegal and would remove governance safeguards from the nonprofit and the attorneys general. The letter argues that OpenAI's original complex structure was deliberately designed to remain accountable to its mission, without the conflicting pressure of maximizing profits. It contends that the nonprofit is best positioned to advance its mission of ensuring AGI benefits all of humanity by continuing to control OpenAI Global, LLC, whatever the amount of equity that it could get in exchange. PBCs can choose how they balance their mission with profit-making. Controlling shareholders have a large influence on how closely a PBC sticks to its mission. OpenAI subpoenaed six nonprofit organizations that opposed its for-profit transition, which the organizations described as an attempt to silence them.

On October 28, 2025, OpenAI announced that it had adopted the new PBC corporate structure after receiving approval from the attorneys general of California and Delaware. Under the new structure, OpenAI's for-profit branch became a PBC known as OpenAI Group PBC, while the nonprofit was renamed to the OpenAI Foundation. The OpenAI Foundation holds a 26% stake in the PBC, while Microsoft holds a 27% stake and the remaining 47% is owned by employees and other investors.

All members of the OpenAI Group PBC board of directors are to be appointed by the OpenAI Foundation, which can remove them at any time. As of April 2026, all but one of the board members of the OpenAI Foundation were also board members of OpenAI Group PBC. In April 2026, co-founder Musk revised his lawsuit against OpenAI and Altman to seek the reversal of OpenAI's corporate restructuring. Musk lost the lawsuit in May 2026, with the jury concluding that he waited beyond the three-year statute of limitations to sue OpenAI.

Altman stated that an initial public offering (IPO) was the most likely path forward. On June 8, 2026, OpenAI confirmed it filed for an IPO with the US Securities and Exchange Commission (SEC), but stated "it could be a while because there are things we want to do that are likely easier as a private company." Altman confirmed in September that the IPO was delayed until 2027.

Partnership with Microsoft

Following its original $1 billion investment in 2019 which began an AI boom, Microsoft invested another $2 billion through 2022. On January 23, 2023, Microsoft announced an additional $10 billion investment in OpenAI over multiple years, of which a significant portion would be used to purchase compute on Microsoft Azure. These investments were made at a $29 billion valuation, double OpenAI's 2021 valuation. Later that year, Microsoft began using OpenAI models for its Copilot chatbot, integrated Copilot into Windows, and released mobile Copilot apps.

Following OpenAI's 2025 restructuring, Microsoft owned a 27% stake in the for-profit OpenAI Group PBC, valued at $135 billion. In a deal announced the same day, OpenAI agreed to purchase $250 billion of Azure services, with Microsoft ceding their right of first refusal over OpenAI's future cloud computing purchases. As part of the deal, OpenAI will continue to share 20% of its revenue with Microsoft until it achieves AGI, which must now be verified by an independent panel of experts. The deal also loosened restrictions on both companies working with third parties, allowing Microsoft to pursue AGI independently and allowing OpenAI to develop products with other companies.

In April 2026, the two firms announced a new agreement which removed many of the more restrictive aspects of their partnership. No longer the exclusive cloud provider, Microsoft then had the first right to provide cloud services, but OpenAI could purchase other services in the event that Microsoft did not provide sufficient capacity. OpenAI will no longer receive a portion of Microsoft's revenue from using OpenAI's technology. The clause, which created uncertainty for Microsoft in the event OpenAI determined that OpenAI had created AGI, was dropped.

Finances

In 2017, OpenAI spent $7.9 million, a quarter of its functional expenses, on cloud computing. In comparison, DeepMind's total expenses in 2017 were $442 million. In the summer of 2018, training OpenAI's Dota 2 bots required renting 128,000 CPUs and 256 GPUs from Google for multiple weeks.

In October 2024, OpenAI completed a $6.6 billion capital raise with a $157 billion valuation including investments from Microsoft, Nvidia, and SoftBank.

On January 21, 2025, President Donald Trump announced The Stargate Project, a joint venture between OpenAI, Oracle, SoftBank and MGX to build an AI infrastructure system in conjunction with the US government. The project takes its name from OpenAI's existing "Stargate" supercomputer project and was estimated to cost $500 billion. The partners planned to fund the project over the next four years. In July, the United States Department of Defense announced that OpenAI had received a $200 million contract for AI in the military, along with Anthropic, Google, and xAI. In the same month, OpenAI made a deal with the UK Government to use ChatGPT and other AI tools in public services. OpenAI also began a $50 million fund to support nonprofit and community organizations.

In April 2025, OpenAI raised $40 billion at a $300 billion post-money valuation, which was the highest-value private technology deal in history. The financing round was led by SoftBank, with other participants including Microsoft, Coatue, Altimeter and Thrive.

In July 2025, the company reported annualized revenue of $12 billion. This was an increase from $3.7 billion in 2024, which was driven by ChatGPT subscriptions, which reached 20 million paid subscribers by April 2025, up from 15.5 million at the end of 2024, alongside a rapidly expanding enterprise customer base that grew to five million business users.

In February 2026, OpenAI raised $110 billion at a $730 billion valuation, led by Amazon ($50 billion), SoftBank ($30 billion), and Nvidia ($30 billion), surpassing the prior round as the largest private technology fundraise in history. The round was extended to $120 billion in March 2026. In April 2026, the company announced that it closed a funding round of $122 billion in committed capital at a post-money valuation of $852 billion.

OpenAI's corporate structure, as of May 2026
OpenAI's corporate structure, as of May 2026

03Business model

OpenAI uses a tiered revenue model that combines free consumer access, paid subscription services, enterprise licensing, and application programming interface (API) usage-based pricing. The basic functionality is provided at no cost, while advanced capabilities are offered through paid plans such as ChatGPT Plus and enterprise solutions. OpenAI's subscription and enterprise offerings are structured around scalable compute usage and API integration into third-party platforms. In 2025, the company reported significant revenue growth associated with expanded computing infrastructure and enterprise adoption.

The company's cash burn remains high because of the intensive computational costs required to train and operate large language models. It projects an $8 billion operating loss in 2025. OpenAI reports revised long-term spending projections totaling approximately $115 billion through 2029, with annual expenditures projected to escalate significantly, reaching $17 billion in 2026, $35 billion in 2027, and $45 billion in 2028. These expenditures are primarily allocated toward expanding compute infrastructure, developing proprietary AI chips, constructing data centers, and funding intensive model training programs, with more than half of the spending through the end of the decade expected to support research-intensive compute for model training and development.

The company's financial strategy prioritizes market expansion and technological advancement over near-term profitability, with OpenAI's 2025 forecast predicting cash-flow-positive operations by 2029 and projecting revenue of approximately $200 billion by 2030.

In October 2025, OpenAI completed an employee share sale of up to $10 billion to existing investors which valued the company at $500 billion. The deal valued OpenAI as the most valuable privately owned company in the world, surpassing SpaceX as the world's most valuable private company.

In April 2026, reports indicated that OpenAI projected approximately $2.5 billion in advertising revenue for the year, with estimates rising to $100 billion annually by 2030, highlighting advertising as a key component of its future business strategy.

In June 2026, it was announced that OpenAI and the White House have been in ongoing talks for about a year to allow a possible government stake in the company.

In August 2026, OpenAI said its advertising business had reached an annualized revenue run rate of $1 billion, roughly 200 days after its launch.

In August 2026, OpenAI announced that it had terminated API access for the AI coding tool Cursor following Cursor's acquisition by SpaceX.

OpenAI Deployment Company

In May 2026, OpenAI launched the OpenAI Deployment Company (DeployCo), a majority-owned and controlled company providing deployment and integration services for OpenAI's artificial intelligence systems. DeployCo received more than $4 billion in initial investment from a group led by TPG, with Advent International, Bain Capital and Brookfield as co-lead founding partners. Axios reported that the investment valued the company at $10 billion before the financing and $14 billion afterward.

DeployCo employs forward-deployed engineers who work with client organizations to deploy AI systems. The Financial Times compared the approach to the deployment model used by Palantir Technologies, which popularized the forward-deployed engineering role. At its launch, DeployCo agreed to acquire AI consulting and engineering firm Tomoro, adding approximately 150 engineers and deployment specialists. In July, DeployCo agreed to acquire Northslope, an applied AI company founded by former Palantir employees.

Acquisitions

In August 2023, it was announced that OpenAI had acquired the New York-based start-up Global Illumination, a company that deploys AI to develop digital infrastructure and creative tools.

In June 2024, OpenAI acquired Multi, a startup focused on remote collaboration.

On February 10, 2025, a consortium of investors led by Elon Musk submitted a $97.4 billion unsolicited bid to buy the nonprofit that controls OpenAI, declaring willingness to match or exceed any better offer. The offer was rejected on February 14, 2025, with OpenAI stating that it was not for sale, but the offer complicated Altman's restructuring plan by suggesting a lower bar for how much the nonprofit should be valued.

In March 2025, OpenAI reached a deal with CoreWeave to acquire $350 million worth of CoreWeave shares and access to AI infrastructure, in return for $11.9 billion paid over five years. Microsoft was already CoreWeave's biggest customer in 2024. Alongside their other business dealings, OpenAI and Microsoft were renegotiating the terms of their partnership to facilitate a potential future IPO by OpenAI, while ensuring Microsoft's continued access to advanced AI models. On May 21, 2025 OpenAI announced the $6.5 billion acquisition of io, an AI hardware start-up founded by former Apple designer Jony Ive in 2024.

In September 2025, OpenAI agreed to acquire the product testing startup Statsig for $1.1 billion in an all-stock deal and appointed Statsig's founding CEO Vijaye Raji as OpenAI's chief technology officer of applications. The company also announced development of an AI-driven hiring service designed to rival LinkedIn. OpenAI acquired personal finance app Roi in October 2025. In October 2025, OpenAI acquired Software Applications Incorporated, the developer of Sky, a macOS-based natural language interface designed to operate across desktop applications. The Sky team joined OpenAI, and the company announced plans to integrate Sky's capabilities into ChatGPT. In December 2025, it was announced OpenAI had agreed to acquire Neptune, an AI tooling startup that helps companies track and manage model training, for an undisclosed amount.

In January 2026, it was announced OpenAI had acquired healthcare technology startup Torch for approximately $60 million. The acquisition followed the launch of OpenAI's ChatGPT Health product and was intended to strengthen the company's medical data and healthcare artificial intelligence capabilities. OpenAI acquired Python tool developer Astral in March 2026.

In April 2026, the company acquired TBPN, a media company in California, for an undisclosed sum.

Corporate partnerships

Computing

In 2024, OpenAI began collaborating with Broadcom to design a custom AI chip capable of both training and inference, targeted for mass production in 2026 and to be manufactured by TSMC on a 3 nm process node. This initiative intended to reduce OpenAI's dependence on Nvidia GPUs, which are costly and face high demand in the market. On June 24, 2026, OpenAI announced its new chip called Jalapeño, created in collaboration with Broadcom. The company plans to start rolling it out by the end of 2026.

In June 2025, OpenAI began renting Google Cloud's Tensor Processing Units (TPUs) to support ChatGPT and related services, marking its first meaningful use of non‑Nvidia AI chips. In September, OpenAI signed a contract with Oracle to purchase $300 billion in computing power over the next five years. OpenAI and Nvidia then announced a potential deployment of at least 10 gigawatts of Nvidia systems and a $100 billion investment from Nvidia in OpenAI. However the plan was first scaled back, and in August 2026 amended to lease an 8GW data center in Pike County, Ohio owned by SB Energy. Nvidia will provide $105 billion as a financial backstop.

In October 2025, OpenAI announced a five-year multi-billion dollar deal with AMD. OpenAI committed to purchasing six gigawatts worth of AMD chips, starting with the MI450. OpenAI will have the option to buy up to 160 million shares of AMD, about 10% of the company, depending on development, performance and share price targets.

In November 2025, OpenAI announced a "multi-year strategic partnership" with Amazon Web Services, beginning its use of their cloud computing.

Other

OpenAI has been criticized for outsourcing the annotation of data sets to Sama, a company based in San Francisco that employed workers in Kenya. These annotations were used to train an AI model to detect toxicity, which could then be used to moderate toxic content, notably from ChatGPT's training data and outputs. However, these pieces of text usually contained detailed descriptions of various types of violence, including sexual violence. OpenAI began sending snippets of data to Sama as early as November 2021. The four Sama employees interviewed by Time described themselves as mentally scarred. OpenAI paid Sama $12.50 per hour of work, and Sama was redistributing the equivalent of between $1.32 and $2.00 per hour post-tax to its annotators. Sama's spokesperson said that the $12.50 was also covering other implicit costs, among which were infrastructure expenses, quality assurance and management.

In January 2024, Arizona State University purchased ChatGPT Enterprise in OpenAI's first deal with a university.

In December 2025, Disney said it would make a $1 billion investment in OpenAI, and signed a three-year licensing deal that will let users generate videos using Sora, OpenAI's short-form AI video platform. More than 200 Disney, Marvel, Star Wars and Pixar characters would be available to OpenAI users. Disney would later exit this deal in late March 2026, due to Sora being discontinued.

In early 2026, Amazon entered advanced discussions to invest up to $50 billion in OpenAI as part of a potential artificial intelligence partnership. Under the proposed agreement, OpenAI's models could be integrated into Amazon's digital assistant Alexa and other internal projects.

In June 2026, OpenAI announced partnerships with Wix, Base44, Replit, Lovable, Figma, and Emergent to support its new Sites feature in Codex, which enables users to publish outputs as hosted, interactive websites rather than local files.

In June 2024, Apple Inc. signed a contract with OpenAI to integrate ChatGPT features into its products as part of its new Apple Intelligence initiative.

In December 2024, OpenAI partnered with Anduril Industries to develop and deploy advanced artificial intelligence solutions for national security missions.

Government contracting

OpenAI provides LLMs to the Artificial Intelligence Cyber Challenge and to the Advanced Research Projects Agency for Health. In October 2024, The Intercept revealed that OpenAI's tools are considered "essential" for AFRICOM's mission and included in an "Exception to Fair Opportunity" contractual agreement between the United States Department of Defense (DoD) and Microsoft. In December 2024, OpenAI said it would partner with defense-tech company Anduril to build drone defense technologies for the United States and its allies.

In January 2025, OpenAI partnered with Los Alamos National Laboratory to install GPT models on the Venado supercomputer at the Nicholas C. Metropolis Center for Modeling and Simulation. The supercomputer is used for nuclear stockpile stewardship.

In June 2025, OpenAI's Chief Product Officer, Kevin Weil, was commissioned lieutenant colonel in the U.S. Army to join Detachment 201 as senior advisor.

Also in June 2025, the DoD awarded OpenAI a $200 million one-year contract to develop AI tools for military and national security applications. OpenAI announced a new program, OpenAI for Government, to give federal, state, and local governments access to its models, including ChatGPT.

On February 28, 2026, after OpenAI's competitor Anthropic refused to authorize the DoD to use its AI systems for mass surveillance or autonomous weapons systems, Anthropic was labeled a "supply-chain risk" by the DoD, and the Trump administration decided to stop using it across the government. The same day, OpenAI announced that it had reached an agreement with the DoD to deploy its models in the government's classified network. Altman wrote, "Two of our most important safety principles are prohibitions on domestic mass surveillance and human responsibility for the use of force, including for autonomous weapon systems", that the DoD agrees with this, and that this is included in their agreement. However, while the agreement mentioned existing law and allowed OpenAI to implement some technical safeguards, it did not incorporate legally binding prohibitions on domestic mass surveillance or fully autonomous weapons. Following backlash over the potential use of ChatGPT for surveillance, Altman amended the contract to include more safeguards, though only excerpts of the contract were made public and critics remained concerned that it was purposefully vague and contained carve-outs for domestic surveillance.

The release of ChatGPT was a major event in the AI boom. By January 2023, ChatGPT had become what was then the fastest-growing consumer software application in history, gaining over 100 million users in two months.
The release of ChatGPT was a major event in the AI boom. By January 2023, ChatGPT had become what was then the fastest-growing consumer software application in history, gaining over 100 million users in two months.

04Services

Products

Development

In February 2019, GPT-2 was announced, which gained attention for its ability to generate human-like text.

In 2020, OpenAI announced GPT-3, a language model trained on large internet datasets. GPT-3 is aimed at natural language answering questions, but it can also translate between languages and coherently generate improvised text. It also announced that an associated API, named the API, would form the heart of its first commercial product.

Eleven employees left OpenAI, mostly between December 2020 and January 2021, in order to establish Anthropic.

In 2021, OpenAI introduced DALL-E, a specialized deep learning model adept at generating complex digital images from textual descriptions, utilizing a variant of the GPT-3 architecture.

In December 2022, OpenAI received widespread media coverage after launching a free preview of ChatGPT, its new AI chatbot based on GPT-3.5. According to OpenAI, the preview received over a million signups within the first five days. According to anonymous sources cited by Reuters in December 2022, OpenAI Global, LLC was projecting $200 million of revenue in 2023 and $1 billion in revenue in 2024.

After ChatGPT was launched, Google announced a similar chatbot, Bard, amid internal concerns that ChatGPT could threaten Google's position as a primary source of online information.

On February 7, 2023, Microsoft announced that it was building AI technology based on the same foundation as ChatGPT into Microsoft Bing, Edge, Microsoft 365 and other products.

On March 14, 2023, OpenAI released GPT-4, both as an API (with a waitlist) and as a feature of ChatGPT Plus.

On November 6, 2023, OpenAI launched GPTs, allowing individuals to create customized versions of ChatGPT for specific purposes, further expanding the possibilities of AI applications across various industries. On November 14, 2023, OpenAI announced they temporarily suspended new sign-ups for ChatGPT Plus due to high demand. Access for newer subscribers re-opened a month later on December 13.

In December 2024, the company launched the Sora model. It also launched OpenAI o1, an early reasoning model that was internally codenamed strawberry. Additionally, ChatGPT Pro, a $200/month subscription service offering unlimited o1 access and enhanced voice features, was introduced, and preliminary benchmark results for the upcoming OpenAI o3 models were shared.

On January 23, 2025, OpenAI released Operator, an AI agent and tool for accessing websites to execute goals defined by users. The feature was only available to Pro users in the United States. OpenAI released deep research agent, nine days later. It scored a 27% accuracy on the benchmark Humanity's Last Exam (HLE). Altman later stated GPT-4.5 would be the last model without full chain-of-thought reasoning.

In July 2025, according to OpenAI, one of its experimental models performed at a gold medal-level at the International Mathematical Olympiad.

On October 6, 2025, OpenAI displayed its Agent Builder platform during the company's DevDay event. The platform includes a visual drag-and-drop interface for agentic workflows.

On October 21, 2025, OpenAI introduced ChatGPT Atlas, a web browser which integrates ChatGPT into web navigation.

On December 11, 2025, OpenAI announced GPT-5.2.

In early 2026, reports indicated that OpenAI was working on a collaborative software development platform designed to compete with services such as GitHub and GitLab.

On March 24, 2026, OpenAI announced that they would discontinue the Sora app, as well as developer access to the API for the Sora model.

On September 3, 2026, GPT-6 Astra was initially released to approved users, followed by general public availability the following day.

On September 14, 2026, OpenAI developed Habitat, an online storage platform, to manage over 70 million data requests per second to support products like ChatGPT and Codex across nearly 40 regions, handling more than 500 petabytes of data.

Transparency

In March 2023, the company was criticized for disclosing particularly few technical details about products like GPT-4, contradicting its initial commitment to openness and making it harder for independent researchers to replicate its work and develop safeguards. OpenAI cited competitiveness and safety concerns to justify this repudiation. OpenAI's former chief scientist Ilya Sutskever argued in 2023 that open-sourcing increasingly capable models was increasingly risky, and that the safety reasons for not open-sourcing the most potent AI models would become "obvious" in a few years.

In September 2025, OpenAI published a study on how people use ChatGPT for everyday tasks. The study found that "non-work tasks" (according to an LLM-based classifier) account for more than 72 percent of all ChatGPT usage, with a minority of overall usage related to business productivity.

Alignment

In July 2023, OpenAI launched the superalignment project, aiming within four years to determine how to align future superintelligent systems. OpenAI promised to dedicate 20% of its computing resources to the project, although the company's employees later reported that the company only allocated 1-2% of its resources to it. OpenAI ended the project in May 2024 after its co-leaders Ilya Sutskever and Jan Leike left the company.

Conversation sharing

In August 2025, OpenAI rolled back a new experimental "share with search engines" feature. The opt-in toggle, intended to allow users to make specific chats discoverable through search engines like Google, was criticized after some users who misunderstood it shared discussions including personal details such as names, locations, and intimate topics. OpenAI announced the feature's permanent removal on August 1, 2025, and the company began coordinating with search providers to remove the exposed content, emphasizing that it was not a security breach but a design flaw that heightened privacy risks. CEO Sam Altman acknowledged the issue in a podcast, noting users often treat ChatGPT as a confidant for deeply personal matters, which amplified concerns about AI handling sensitive data.

Sam Altman in 2019
Sam Altman in 2019

05Management

Key employees

Board of directors of the OpenAI nonprofit

Principal individual investors

Firing of Altman

On November 17, 2023, Sam Altman was removed as CEO when OpenAI's board of directors (composed of Helen Toner, Ilya Sutskever, Adam D'Angelo and Tasha McCauley) cited a lack of confidence in him. Chief Technology Officer Mira Murati took over as interim CEO. Greg Brockman, the president of OpenAI, was also removed as chairman of the board and resigned from the company's presidency shortly thereafter. Three senior OpenAI researchers subsequently resigned: director of research and GPT-4 lead Jakub Pachocki, head of AI risk Aleksander Mądry, and researcher Szymon Sidor.

On November 18, 2023, there were reportedly talks of Altman returning as CEO amid pressure placed upon the board by investors such as Microsoft and Thrive Capital, who objected to Altman's departure. Although Altman himself spoke in favor of returning to OpenAI, he has since stated that he considered starting a new company and bringing former OpenAI employees with him if talks to reinstate him did not work out. Altman insisted multiple times that all board members who supported his removal should resign; the board members agreed "in principle" to resign if Altman returned. On November 19, 2023, negotiations with Altman to return failed and Murati was replaced by Emmett Shear as interim CEO. The board initially contacted Anthropic CEO Dario Amodei (a former OpenAI executive) about replacing Altman, and proposed a merger of the two companies, but both offers were declined.

On November 20, 2023, Microsoft CEO Satya Nadella announced Altman and Brockman would be joining Microsoft to lead a new advanced AI research team, but added that they were still committed to OpenAI despite recent events. Before the partnership with Microsoft was finalized, Altman gave the board another opportunity to negotiate with him. About 738 of OpenAI's 770 employees, including Murati and Sutskever, signed an open letter stating they would quit their jobs and join Microsoft if the board did not rehire Altman and then resign. This prompted OpenAI investors to consider legal action against the board as well. In response, OpenAI management sent an internal memo to employees stating that negotiations with Altman and the board had resumed and would take some time.

On November 21, 2023, after continued negotiations, Altman and Brockman returned to the company in their prior roles along with a reconstructed board made up of new members Bret Taylor (as chairman) and Lawrence Summers, with D'Angelo remaining. According to subsequent reporting, shortly before Altman's firing, some employees raised concerns to the board about how he had handled the safety implications of a recent internal AI capability discovery. On November 29, 2023, OpenAI announced that an anonymous Microsoft employee had joined the board as a non-voting member to observe the company's operations; Microsoft resigned from the board in July 2024.

In February 2024, the Securities and Exchange Commission subpoenaed OpenAI's internal communication to determine if Altman's alleged lack of candor misled investors. Following the temporary removal of Sam Altman and his return, many employees gradually left OpenAI, including most of the original leadership team and a significant number of AI safety researchers.

Personnel changes

Former OpenAI employees have founded many further AI startups, including Dario Amodei and Daniela Amodei (left 2021, founding its largest competitor Anthropic), Ilya Sutskever (left May 2024, founded Safe Superintelligence Inc.), Mira Murati (left September 2024, founded Thinking Machines Lab), and Aravind Srinivasan (left 2022, founded Perplexity AI).

In 2018, Musk resigned from his Board of Directors seat, citing "a potential future conflict [of interest]" with his role as CEO of Tesla due to Tesla's AI development for self-driving cars. OpenAI stated that Musk's financial contributions were below $45 million.

On March 3, 2023, Reid Hoffman resigned from his board seat, citing a desire to avoid conflicts of interest with his investments in AI companies via Greylock Partners, and his co-founding of the AI startup Inflection AI. Hoffman remained on the board of Microsoft, a major investor in OpenAI.

In May 2024, Chief Scientist Ilya Sutskever resigned and was succeeded by Jakub Pachocki. Co-leader Jan Leike also departed amid concerns over safety and trust. OpenAI then signed deals with Reddit, News Corp, Axios, and Vox Media. Paul Nakasone then joined the board of OpenAI.

In August 2024, cofounder John Schulman left OpenAI to join Anthropic, and OpenAI's president Greg Brockman took extended leave until November.

In September 2024, CTO Mira Murati left the company.

In November 2025, Lawrence Summers resigned from the board of directors.

In April 2026, OpenAI's head of AGI deployment, Fidji Simo, said she would take "several weeks" of medical leave. This triggered a reshuffling of the leadership. Brad Lightcap transitioned from his role as Chief Operating Officer to lead "special projects" focused on complex deals, reporting directly to Sam Altman. This includes a potential software distribution joint venture with private equity partners. Denise Dresser, the company's Chief Revenue Officer, temporarily assumed several of Lightcap's previous operational duties, with Greg Brockman taking over the product organization.

Altman and Sutskever at Tel Aviv University in 2023
Altman and Sutskever at Tel Aviv University in 2023
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