OpenAI is an American AI research organization with both non-profit and for-profit arms, based in San Francisco. Its primary goal is to develop safe and beneficial artificial general intelligence (AGI), defined as highly autonomous systems exceeding human performance in most economically valuable work. The organization focuses on ensuring AI benefits humanity and avoids potential risks through careful research and development practices.
In December 2015, Brockman hired nine AI researchers as the first employees.
In December 2015, OpenAI was founded as a not-for-profit organization by Sam Altman, Elon Musk, and others with a pledge of $1 billion in capital.
In 2015, Musk and Altman stated that they were partly motivated by concerns about AI safety and existential risk from artificial general intelligence.
In 2015, OpenAI was founded in Delaware as a nonprofit organization.
In April 2016, OpenAI released a public beta of "OpenAI Gym", its platform for reinforcement learning research.
In August 2016, Nvidia gifted its first DGX-1 supercomputer to OpenAI.
In December 2016, OpenAI released "Universe", a software platform for measuring and training AI general intelligence.
In 2016, OpenAI spent $7 million on its first 52 employees.
In 2017, OpenAI spent $7.9 million on cloud computing, a quarter of its functional expenses.
In 2018, Elon Musk resigned from his Board of Directors seat at OpenAI, citing a potential conflict of interest with his role as CEO of Tesla due to Tesla's AI development for self-driving cars.
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 February 2019, GPT-2 was announced, and it gained attention for its ability to generate human-like text.
By 2019, OpenAI had only received $130 million of the $1 billion initially pledged.
In 2019, OpenAI created OpenAI Global, LLC, a capped-profit subsidiary controlled by the nonprofit.
In 2019, OpenAI created a for-profit subsidiary.
In 2019, OpenAI transitioned from non-profit to a "capped" for-profit model.
Microsoft's 2019 investment in OpenAI, totaling $1 billion, reportedly kicked off the contemporary AI boom.
Eleven employees left OpenAI, mostly between December 2020 and January 2021, to establish Anthropic.
In 2020, OpenAI announced GPT-3, a language model trained on large internet datasets and its API, which would form the heart of its first commercial product.
Eleven employees left OpenAI, mostly between December 2020 and January 2021, to establish Anthropic.
As early as November 2021, OpenAI began outsourcing the annotation of data sets to Sama, a company based in San Francisco that employed workers in Kenya, to train an AI model to detect toxicity. These workers described themselves as mentally scarred by the violent content.
In 2021, OpenAI Global, LLC was valued at $14.5 billion.
In 2021, OpenAI developed Whisper, a speech recognition tool, and used it to transcribe over one million hours of YouTube videos to train GPT-4. This raised internal concerns regarding potential violations of YouTube's terms of service, but the project proceeded.
In 2021, OpenAI introduced DALL-E, a deep learning model that generates digital images from textual descriptions, using a variant of the GPT-3 architecture.
In November 2022, OpenAI's release of ChatGPT catalyzed widespread interest in generative AI.
In December 2022, OpenAI launched a free preview of ChatGPT, an AI chatbot based on GPT-3.5, receiving over a million signups in the first five days.
In January 2023, OpenAI Global, LLC was in talks for funding that would value the company at $29 billion.
On January 23, 2023, Microsoft announced a new US$10 billion investment in OpenAI Global, LLC.
On February 7, 2023, Microsoft announced integrating AI technology based on ChatGPT into Microsoft Bing, Edge, Microsoft 365, and other products.
On March 3, 2023, Reid Hoffman resigned from his OpenAI board seat, citing potential conflicts of interest with his AI company investments.
On March 14, 2023, OpenAI released GPT-4 as an API (with a waitlist) and as a feature of ChatGPT Plus.
In March 2023, OpenAI faced criticism for not disclosing technical details about products like GPT-4, a departure from its initial commitment to openness, citing competitiveness and safety concerns.
In April 2023, the EU's European Data Protection Board (EDPB) formed a dedicated task force on ChatGPT to foster cooperation and information exchange on possible enforcement actions.
In May 2023, Sam Altman, Greg Brockman, and Ilya Sutskever posted recommendations for the governance of superintelligence, proposing an international watchdog organization and more safety research.
In June 2023, a lawsuit was filed claiming that OpenAI scraped 300 billion words online without consent and without registering as a data broker, also alleging unlawful collection of personal data to train AI models.
In July 2023, OpenAI initiated the superalignment project, aiming to align future superintelligent systems within four years, committing 20% of its computing resources.
In July 2023, OpenAI was sued for copyright infringement by authors Sarah Silverman, Matthew Butterick, Paul Tremblay and Mona Awad.
In July 2023, the FTC launched an investigation into OpenAI over allegations of data scraping and publishing false information, raising concerns about privacy safeguards.
In August 2023, OpenAI acquired Global Illumination, a New York-based start-up that uses AI to develop digital infrastructure and creative tools.
In September 2023, 17 authors, including George R. R. Martin, John Grisham, Jodi Picoult, and Jonathan Franzen, joined the Authors Guild in filing a class action lawsuit against OpenAI. They alleged that OpenAI's technology was illegally using their copyrighted work.
On November 6, 2023, OpenAI launched GPTs, enabling users to create custom versions of ChatGPT for specific purposes.
On November 14, 2023, OpenAI temporarily suspended new sign-ups for ChatGPT Plus due to high demand.
In November 2023, OpenAI's board removed Sam Altman as CEO, citing a lack of confidence, but reinstated him five days later.
On November 17, 2023, Sam Altman was removed as CEO by OpenAI's board, with Mira Murati taking over as interim CEO. Greg Brockman resigned as president, and several researchers also resigned.
On November 18, 2023, discussions began regarding Sam Altman's potential return as CEO of OpenAI, fueled by investor pressure. Altman considered starting a new company if reinstatement talks failed.
On November 19, 2023, negotiations for Sam Altman's return as CEO failed, and Emmett Shear replaced Mira Murati as interim CEO. The board approached Anthropic's CEO, Dario Amodei, about replacing Altman and proposed merging the two companies, but both offers were declined.
On November 20, 2023, Microsoft CEO Satya Nadella announced that Sam Altman and Greg Brockman would join Microsoft to lead a new AI research team. However, OpenAI employees threatened to resign if Altman wasn't rehired, prompting renewed negotiations.
On November 21, 2023, Sam Altman and Greg Brockman returned to their former roles at OpenAI with a reconstructed board including Bret Taylor and Lawrence Summers.
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.
In late December 2023, The New York Times sued OpenAI for copyright infringement.
According to anonymous sources cited by Reuters in December 2022, OpenAI Global, LLC projected $200 million in revenue for 2023.
From September to December 2023, Microsoft rebranded all variants of its Copilot to Microsoft Copilot.
On January 10, 2024, OpenAI was criticized for lifting its ban on using ChatGPT for "military and warfare". Previous policies prohibited "weapons development" and "military and warfare", while new policies prohibited using the service to "develop or use weapons".
In January 2024, Arizona State University purchased ChatGPT Enterprise in OpenAI's first deal with a university.
In February 2024, The Intercept, Raw Story, and Alternate Media Inc. filed a copyright litigation lawsuit against OpenAI, charting a new legal strategy for digital-only publishers.
In February 2024, the Securities and Exchange Commission subpoenaed OpenAI's internal communication to investigate whether Sam Altman's actions misled investors.
On February 29, 2024, Elon Musk filed a lawsuit against OpenAI and CEO Sam Altman.
On April 9, 2024, OpenAI countersued Musk in federal court, alleging "bad-faith tactics."
In late April 2024, NOYB filed a complaint against OpenAI with the Austrian Datenschutzbehörde for violating the European General Data Protection Regulation, regarding inaccurate personal data generated by ChatGPT.
In May 2024, Chief Scientist Ilya Sutskever resigned from OpenAI and was succeeded by Jakub Pachocki. Co-leader Jan Leike also departed, and Paul Nakasone joined the board of OpenAI. The company also signed deals with Reddit, News Corp, Axios, and Vox Media.
In May 2024, OpenAI ended the superalignment project after its co-leaders Ilya Sutskever and Jan Leike left the company.
In May 2024, it was revealed that OpenAI had destroyed its Books1 and Books2 training datasets, used in training GPT-3 and believed to have contained over 100,000 copyrighted books, which were subject to copyright.
In May 2024, it was revealed that OpenAI required departing employees to sign a non-disparagement agreement. Former employee Daniel Kokotajlo forfeited his equity to avoid signing it. Sam Altman initially claimed ignorance of the equity cancellation provision, but leaked documents refuted this.
On May 22, 2024, OpenAI partnered with News Corp to integrate news content from publications like The Wall Street Journal into its AI platform.
On May 23, 2024, OpenAI sent a memo releasing former employees from a lifelong non-disparagement agreement, which had previously forbidden them from criticizing OpenAI.
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 June 2024, OpenAI acquired Multi, a startup focused on remote collaboration.
In July 2024, Microsoft resigned from 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, OpenAI's global affairs chief endorsed the UK's "smart" AI regulation during testimony to a House of Lords committee.
In October 2024, OpenAI completed a $6.6 billion capital raise with a $157 billion valuation.
In October 2024, Suchir Balaji accused OpenAI of violating copyright law. He was a likely witness in a major copyright trial against the AI company.
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 November 2024, a coalition of Canadian news outlets including the Toronto Star and CBC sued OpenAI for using their news articles to train its software without permission.
On November 26, 2024, Suchir Balaji died by suicide, which prompted conspiracy theories and calls for an investigation.
In December 2024, OpenAI launched the Sora model and OpenAI o1. Also, 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.
In December 2024, OpenAI proposed a restructuring plan to convert the capped-profit into a Delaware-based public benefit corporation (PBC).
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.
According to anonymous sources cited by Reuters in December 2022, OpenAI Global, LLC projected $1 billion in revenue for 2024.
In 2024, Microsoft was already CoreWeave's biggest customer. OpenAI and Microsoft were renegotiating their partnership terms to facilitate a potential future initial public offering by OpenAI, while ensuring Microsoft's continued access to advanced AI models.
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.
In 2024, many employees gradually left OpenAI after the temporary removal and subsequent return of Sam Altman, including much of the original leadership team and a significant number of AI safety researchers.
On May 21, OpenAI announced the $6.5 billion acquisition of io, an AI hardware start-up founded by former Apple designer Jony Ive in 2024.
Throughout 2024, roughly half of then-employed AI safety researchers left OpenAI, citing the company's role in an industry-wide problem.
On January 21, 2025, Donald Trump announced The Stargate Project, a joint venture between OpenAI, Oracle, SoftBank and MGX.
On January 23, 2025, OpenAI released Operator, an AI agent and tool for accessing websites to execute user-defined goals, initially available to Pro users in the United States.
On February 10, 2025, a consortium led by Elon Musk submitted a $97.4 billion unsolicited bid to buy the nonprofit that controls OpenAI.
In February 2025, OpenAI CEO Sam Altman expressed interest in collaborating with China, despite U.S. regulatory restrictions. This followed the rise of DeepSeek, a Chinese AI company, and OpenAI enhanced security to protect its development techniques.
In February 2025, OpenAI rejected the $97.4 billion unsolicited bid, stating that it was not for sale.
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.
In March 2025, amidst 781 state AI bills or laws in the United States, OpenAI advocated for federal preemption of state AI laws. OpenAI opposed California's AI legislation, while Public Citizen argued that existing state laws have not hindered innovation.
By April 2025, ChatGPT subscriptions reached 20 million paid subscribers.
In April 2025, OpenAI raised $40 billion at a $300 billion post-money valuation.
On April 24, 2025, Ziff Davis sued OpenAI in Delaware federal court for copyright infringement.
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.
In July 2025, according to OpenAI, one of its experimental models achieved a gold medal-level performance at the International Mathematical Olympiad.
In July 2025, the company reported annualized revenue of $12 billion.
On August 1, 2025, OpenAI permanently removed the "share with search engines" feature due to the inadvertent exposure of private ChatGPT conversations to public search engines.
In August 2025, OpenAI faced criticism after thousands of private ChatGPT conversations were exposed to search engines due to an experimental 'share with search engines' feature. The opt-in feature resulted in personal details being inadvertently exposed in search results.
In August 2025, the parents of a 16-year-old boy who died by suicide filed a wrongful death lawsuit against OpenAI (and CEO Sam Altman), alleging that conversations with ChatGPT contributed to their son's death.
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.
In September 2025, OpenAI and NVIDIA announced a memorandum of understanding that included a potential deployment of at least 10 gigawatts of NVIDIA systems and a $100 billion investment from NVIDIA in OpenAI. OpenAI expected the negotiations to be completed within weeks.
In September 2025, OpenAI published a study revealing that "non-work tasks" constitute over 72 percent of all ChatGPT usage, with business productivity accounting for a minority.
In September 2025, it was revealed that OpenAI signed a contract with Oracle to purchase $300 billion in computing power over the next five years.
On October 6, 2025, OpenAI showcased its Agent Builder platform, featuring a visual drag-and-drop interface for agentic workflows, during the company's DevDay event.
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 October 2025, OpenAI acquired the personal finance app Roi.
In October 2025, OpenAI announced a 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 October 2025, OpenAI completed an employee share sale of up to $10 billion to existing investors, valuing the company at $500 billion, surpassing SpaceX as the world's most valuable privately owned company.
In October 2025, OpenAI conducted a $6.6 billion share sale that valued the company at $500 billion.
On October 21, 2025, OpenAI introduced ChatGPT Atlas, a web browser integrating ChatGPT into web navigation.
On October 28, 2025, OpenAI announced the adoption of the new PBC corporate structure, with the for-profit branch becoming OpenAI Group PBC and the non-profit becoming the OpenAI Foundation.
In November 2025, Lawrence Summers resigned from OpenAI's board of directors.
In November 2025, the Social Media Victims Law Center and Tech Justice Law Project filed seven lawsuits against OpenAI, including four wrongful death suits, alleging that prolonged ChatGPT usage contributed to the suicides of the victims.
On December 11, 2025, OpenAI announced GPT-5.2.
In December 2025, Adam's estate sued OpenAI claiming that the company shared responsibility in a murder case due to the risk of chatbot psychosis. OpenAI responded saying they will make ChatGPT safer for users disconnected from reality.
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 will be available to OpenAI users.
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 2025, Microsoft owns a 27% stake in the for-profit OpenAI Group PBC, valued at $135 billion.
In 2025, OpenAI projected an $8 billion operating loss due to the intensive computational costs of training and operating large language models.
In 2025, OpenAI reported significant revenue growth attributed to expanded computing infrastructure and increased enterprise adoption. The company's revenue model included free consumer access, paid subscriptions like ChatGPT Plus, enterprise licensing, and API usage-based pricing, reflecting a freemium SaaS structure.
In 2025, OpenAI's Chief Product Officer, Kevin Weil, was commissioned lieutenant colonel in the U.S. Army to join Detachment 201 as senior advisor.
As of January 2026, the memorandum of understanding announced in September 2025 between OpenAI and NVIDIA has not been realized, and the two sides are rethinking the future of their partnership.
In January 2026, OpenAI 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.
On January 27, 2026, OpenAI introduced Prism, a LaTeX-native workspace designed to assist scientists with research and writing tasks, such as drafting scientific papers, managing citations, and formatting equations.
After 8 victims were killed in mass shootings on February 10, 2026, it was revealed that OpenAI had banned the account belonging to the perpetrator due to violent queries approximately 7 months prior to the attacks, but had opted not to report the account to authorities at the time.
On 28 February 2026, OpenAI announced that it had reached an agreement with the DoD to deploy its models in the government's classified network. CEO Sam 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.
In 2026, OpenAI and Broadcom aimed for mass production of their custom AI chip, which is manufactured by TSMC on a 3 nm process node.
In 2026, OpenAI projected annual expenditures to reach $17 billion, primarily allocated toward expanding compute infrastructure, developing proprietary AI chips, constructing data centers, and funding intensive model training programs.
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 early 2026, reports indicated that OpenAI was developing a collaborative software development platform intended to compete with services like GitHub and GitLab.
In 2027, OpenAI projected its annual expenditures to escalate significantly, reaching $35 billion. These funds were primarily allocated toward expanding compute infrastructure, developing proprietary AI chips, constructing data centers, and funding intensive model training programs.
In 2028, OpenAI projected annual expenditures to reach $45 billion, mainly for expanding compute infrastructure, developing AI chips, building data centers, and funding model training programs.
By 2029, OpenAI reported revised long-term spending projections totaling approximately $115 billion, allocated toward expanding compute infrastructure, developing proprietary AI chips, constructing data centers, and funding intensive model training programs.
OpenAI's financial strategy prioritizes market expansion and technological advancement, targeting cash-flow-positive operations by 2029.
OpenAI projected revenue of approximately $200 billion by 2030, underscoring the capital requirements for scaling AI technology and maintaining its industry leadership.
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