OpenAI Statistics 2026: Revenue, History, Employees & Data

Last Updated: July 26, 2026

OpenAI is the most consequential technology company founded in the 21st century. Its revenue grew from $200 million in 2023 to approximately $25 billion in annualized revenue by early 2026 - a trajectory that Gradually.ai describes as the fastest revenue growth in the history of the technology industry. Its flagship product ChatGPT reached 100 million users in two months - faster than any application in history. Its valuation went from $1 billion at founding to $852 billion in March 2026 in seven years - an 852x increase that no private company has replicated.

The story is also the most dramatic in Silicon Valley history. Eleven co-founders including Elon Musk and Sam Altman. A founding mission to build AI for humanity's benefit, not profit. Musk's departure after a power struggle. A $13 billion Microsoft partnership that reshaped the AI industry. The five-day boardroom coup that fired and reinstated Sam Altman while 700 of 770 employees threatened mass resignation. Musk suing OpenAI in 2024, losing at trial in June 2026, with OpenAI filing its IPO application three days later.

This guide covers the complete OpenAI data picture - founding story, Sam Altman biography, full revenue history, all funding rounds, employee statistics, products, acquisitions, legal battles, and the IPO saga - with every figure attributed to a named source.

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OpenAI was founded on December 11, 2015, not to build a product - but out of fear.

The founding group was motivated by a specific concern: that Google DeepMind was not prioritizing safety in its pursuit of artificial general intelligence per Britannica's OpenAI profile. The founders believed that if AGI arrived first at a single powerful corporation without safety-first development principles, the consequences for humanity could be severe. A nonprofit, they reasoned, could develop AGI with a different set of incentives - answerable to humanity broadly rather than to shareholders.

The initial funding pledge of $1 billion came from a who's-who of Silicon Valley: Sam Altman, Elon Musk, Peter Thiel, Amazon Web Services, Reid Hoffman, Jessica Livingston, and others. Musk has claimed he personally contributed approximately $50 million. The money was pledged over time - the nonprofit did not receive $1 billion immediately.

The original mission statement: "ensuring that artificial general intelligence benefits all of humanity."

The founding location was San Francisco - not a garage, not a dorm room, but the Silicon Valley ecosystem that would become the center of the AI industry it helped create.

The first years:

OpenAI initially operated as a pure research lab, publishing research openly (the "Open" in OpenAI reflected this commitment). Early projects included reinforcement learning research, robotics, and natural language systems. The 2020 release of GPT-3 changed everything - the model's ability to generate coherent, contextually appropriate text shocked the NLP community and signaled that the scaling approach was working.

The 2019 restructuring:

By 2019, OpenAI faced a fundamental challenge: training frontier AI models required capital at a scale a nonprofit could not sustainably raise. The solution was a "capped-profit" hybrid structure. A for-profit arm was created beneath the nonprofit parent. Investor returns were capped at 100 times their initial investment - generous enough to attract commercial capital, limited enough to maintain the nonprofit mission's priority.

Microsoft invested $1 billion into this structure in 2019 - the first of what would become a $13 billion total commitment. The partnership gave OpenAI access to Azure cloud computing at scale. Sam Altman was appointed CEO.

For our complete analysis of how OpenAI's competitive position has evolved, our OpenAI statistics guide covers the current market data in detail.

OpenAI's founding group was the most credentialed AI founding team in history.

Sam Altman - Co-founder, current CEO. Former Y Combinator president. More on Altman in the dedicated section below.

Elon Musk - Co-founder, co-chair (2015-2018). Departed in 2018 after a power struggle. Later sued OpenAI. More in the dedicated section below.

Greg Brockman - Co-founder, president and CEO of Applications. Former CTO of Stripe. Briefly removed from the board and resigned as president during the November 2023 coup, then returned when Altman was reinstated.

Ilya Sutskever - Co-founder, former Chief Scientist. One of the most cited AI researchers in history. Departed OpenAI in 2024 to co-found Safe Superintelligence Inc., a safety-focused AI lab.

John Schulman - Co-founder. Departed 2024 and joined Anthropic. Key figure in reinforcement learning from human feedback (RLHF) - the technique that made ChatGPT work.

Wojciech Zaremba - Co-founder. Remains at OpenAI. Key contributor to early reinforcement learning research.

Andrej Karpathy - Co-founder. Departed to join Tesla, then returned to OpenAI, then departed again in 2024. One of the most respected AI educators and researchers publicly.

Trevor Blackwell - Co-founder. Robotics engineer, founder of Anki.

Durk Kingma - Co-founder. Variational autoencoder pioneer, key figure in generative model research.

Vicki Cheung - Co-founder. Early AI researcher.

Pamela Vagata - Co-founder. Early AI engineer.

The eleven-person founding group represented an unusual concentration of talent. Multiple founders had PhDs from Stanford, MIT, and Berkeley. Several had previously worked at Google Brain or Google DeepMind. The group that left to build what they believed was a safer alternative to Google's AI development was, ironically, largely trained at Google.

The departure pattern:

By 2026, the majority of OpenAI's original eleven founders had departed: Musk (2018), Karpathy (multiple departures), Schulman (2024, joined Anthropic), Sutskever (2024, founded SSI). The high departure rate of co-founders is one of the most discussed governance concerns heading into OpenAI's IPO.

Sam Altman is the most prominent individual in the global AI industry in 2026. As CEO of the company that launched the modern AI era with ChatGPT, his decisions have shaped the trajectory of a technology that is redefining every industry on earth.

Early life and education:

Altman was born in 1985 in Chicago, Illinois. He attended Stanford University studying computer science but dropped out without completing his degree. The Stanford dropout-to-billionaire narrative is well-worn in Silicon Valley - but Altman's path was more complicated than most.

Career before OpenAI:

At age 19, Altman co-founded Loopt - a location-based social networking app that was ahead of its time. Loopt secured venture financing from NEA, Sequoia Capital, and Y Combinator. In March 2012, after years of struggle to find product-market fit, Loopt was acquired by the Green Dot Corporation for $43.4 million. Not a failure, not a transformational success.

Altman joined Y Combinator as a partner in 2011. In February 2014, he was appointed president by co-founder Paul Graham - a significant transition for an organization that had become the most important startup accelerator in the world. In those eight days in 2014 when Reddit CEO Yishan Wong resigned, Altman briefly served as Reddit's interim CEO. He invested in multiple Reddit funding rounds and when Reddit went public in 2024, Altman was revealed to be its third-largest shareholder with approximately 8.7-9% of outstanding shares.

At OpenAI:

Altman became CEO of OpenAI in 2019 when Musk departed. He has served as CEO through every inflection point since - the GPT-3 breakthrough, the ChatGPT launch, the Microsoft partnership, the November 2023 firing and reinstatement, the $852 billion valuation, the IPO filing, and the IPO delay.

The compensation paradox:

Altman's reported annual salary is $76,001 - barely above the US median income. He owns 0% of OpenAI equity. This is not humility; it is a structural artifact of OpenAI's nonprofit founding. He has no formal equity stake in a company now worth $852 billion. After OpenAI's October 2024 restructuring to PBC status, it was reported the company was looking to provide Altman with approximately a 7% stake - which at $852 billion valuation would be worth approximately $59 billion. This equity grant is a central element of the IPO preparation story.

Personal investments:

Altman has invested in Neuralink (Musk's brain-computer interface startup), later co-founding Merge Labs (a Neuralink competitor) in 2025. He invested $180 million in Retro Biosciences longevity startup in 2022, telling MIT Technology Review he "basically just took all my liquid net worth and put it into Helion Energy and Retro Biosciences." He has been publicly vocal about his interest in longevity research and has invested in multiple startups in the space.

Public profile:

Altman has become the face of both the AI opportunity and AI risk in public discourse. He testified before Congress. He met with heads of state. He co-authored research on safety. He simultaneously argues that AI will create enormous prosperity and acknowledges that it may eliminate millions of jobs. His April 2026 call for a "New Deal" for AI - including a 4-day workweek and new taxes on wealthy individuals - was widely covered. He is simultaneously the person most responsible for accelerating AI deployment and one of its most prominent cautionary voices.

The Elon Musk chapter of OpenAI's history is the most dramatic subplot in a story full of drama.

The founding partnership:

Musk and Altman were co-chairs of OpenAI at founding. Musk was one of the largest initial financial contributors - he claims to have committed approximately $50 million at founding per Business Insider reporting. The partnership made sense at the time: Musk was among the most vocal voices about AI risk and the most credible technology entrepreneur willing to back a safety-first AI lab.

The 2018 power struggle:

In 2018, Musk proposed taking control of OpenAI to compete more directly with other AI companies including Google per Britannica's Sam Altman profile. Altman declined. The refusal reflected a fundamental disagreement: Musk believed faster development under his leadership was necessary to stay ahead; Altman and the board believed Musk's proposed control structure would compromise the organization's nonprofit mission and independence. Musk left the OpenAI board in 2018. His departure was framed publicly as avoiding a conflict of interest with Tesla's AI work.

The lawsuit:

In 2024, Musk filed a lawsuit against OpenAI, Sam Altman, Greg Brockman, and Microsoft, claiming the company had abandoned its original nonprofit mission in favor of commercial interests. Musk argued that the Microsoft partnership and the capped-profit structure betrayed the founding principles he had helped establish and funded.

OpenAI disputed all of Musk's claims, arguing the structural evolution was necessary to secure the computing resources required for frontier AI development. The nonprofit mission remained the governing priority per its corporate structure.

A federal jury trial in California in 2026 focused on these accusations. On June 5, 2026, the jury ruled against Musk, finding that he had waited too long to file his claims. The court dismissed the lawsuit. Three days later, on June 8, 2026, OpenAI filed its confidential S-1 with the SEC.

The timing was not coincidental. The lawsuit had been one of the obstacles to a public offering. With it dismissed, the IPO path cleared.

Musk's competing ventures:

After departing OpenAI's board, Musk founded xAI in 2023 and launched Grok as a direct competitor to ChatGPT. He has been consistently critical of OpenAI publicly while building a competing AI laboratory. For our complete data on xAI and Grok, our xAI statistics guide covers the competitive picture.

No event in OpenAI's history has been more analyzed - or more consequential for understanding how the company operates.

Friday, November 17, 2023:

OpenAI's board removed Sam Altman as CEO. The official reason: Altman was "not consistently candid in his communications with the board." Greg Brockman was simultaneously removed from the board and immediately resigned as President of OpenAI.

The announcement was abrupt and unexpected. Altman and Brockman both said they were blindsided. The board offered no additional explanation.

The Microsoft response:

On November 20 - just three days after the firing - Microsoft CEO Satya Nadella announced that Sam Altman and Greg Brockman had been hired to lead a new advanced AI research team at Microsoft. Nadella announced this before OpenAI had named a permanent replacement CEO. The move was interpreted as Microsoft securing its most important AI partnership relationships regardless of what OpenAI's board decided.

The employee revolt:

700 of OpenAI's 770 employees at the time signed an open letter threatening to resign and join Altman at Microsoft if the board did not reverse course and reinstate both Altman and Brockman. The signatories included senior researchers, engineers, and leaders across every part of the organization. The letter made the board's position untenable: without staff, OpenAI had no value.

Five days later:

Altman was reinstated as CEO. The board that had fired him was reconstituted. The new board included Bret Taylor (co-founder of Salesforce and former Twitter chairman), Larry Summers (former US Treasury Secretary), and Adam D'Angelo (Quora CEO and one of the original firing board members who remained). The original board members who had orchestrated the firing departed.

The lasting significance:

The November 2023 crisis established several durable facts about OpenAI: Sam Altman's personal brand is inseparable from OpenAI's institutional identity; employees would choose Altman over the institutional board; and Microsoft's financial leverage over OpenAI is significant enough to influence corporate governance outcomes. All three facts shaped the IPO preparation process.

OpenAI's revenue trajectory is the most dramatic in technology history. The company generated approximately $200 million in revenue in 2023. By early 2026, it was generating approximately $25 billion in annualized revenue. That is a 125x increase in roughly three years.

The full revenue history:

Sources: Investing in the Web OpenAI Statistics, Wikipedia citing SEC filings, Gradually.ai OpenAI Statistics

The financial reality:

Despite extraordinary revenue growth, OpenAI is not profitable. The company loses $1.22 for every dollar it earns. 2025 net loss: approximately $9 billion. Projected 2026 losses: $14-33 billion depending on accounting method. OpenAI does not project profitability until at least 2030. Source: AI Business Weekly OpenAI IPO guide

Revenue per employee:

Revenue per employee passed $3 million in early 2026 per Makerstations - comparable to Nvidia ($3.3M as we covered in our nvidia-statistics guide) and significantly above Google ($1.8M), Meta ($1.6M), and Apple ($2.4M) per Bloomberg. This metric explains how OpenAI sustains extraordinary compensation packages despite ongoing losses.

The new revenue streams of 2026:

OpenAI's advertising pilot reached $100 million in ARR in under six weeks - a new revenue stream not present at the start of 2026. ChatGPT Work, launched July 9, 2026, represents the company's move toward agentic enterprise software revenue. ChatGPT Health entered healthcare. The product surface area expanding beyond API access and subscriptions is central to the IPO narrative.

The revenue concentration risk:

Approximately 65-70% of OpenAI's revenue comes from ChatGPT subscriptions and API access. Enterprise contracts (92% of Fortune 500 using ChatGPT) provide revenue stability but also concentration. The IPO prospectus, when released, will clarify the customer concentration and contract duration picture that analysts cannot currently verify from external data.

For our complete current OpenAI market data including ChatGPT user numbers and competitive position, our OpenAI statistics guide covers the current numbers.

The valuation trajectory from $1 billion at founding to $852 billion in March 2026 is unprecedented for any private company.

The complete funding history:

Sources: Gradually.ai, Latka, AI Business Weekly OpenAI IPO

Total funding raised: $138.4 billion across all rounds.

The March 2026 round context:

The $122 billion March 2026 round was announced in February 2026 with a $730 billion pre-money valuation, then closed March 31 at $852 billion post-money. It was the largest private funding round in history - more than the GDP of most countries. Amazon anchored with $50 billion. Nvidia's $30 billion was strategic: Nvidia supplies OpenAI's GPU infrastructure and the investment deepens that dependency. SoftBank's $30 billion continues its long AI investment cycle following its Vision Fund positions.

At $852 billion, OpenAI briefly became the most valuable private company in the world in March 2026, since surpassed by SpaceX and Anthropic (which reached $965 billion valuation in May 2026 - more on the competitive dynamic in our Claude AI statistics guide).

The valuation compression:

From $1 billion in 2019 to $852 billion in March 2026 represents an 852x increase in seven years. No private technology company has achieved a comparable valuation trajectory in comparable time. The number includes a significant premium for OpenAI's first-mover position, brand recognition, and Microsoft's strategic investment - all of which will need to be validated in a public market that is skeptical of AI companies that project losses until 2030.

The headcount history:

Source: Makerstations OpenAI Employee Statistics

The employee count discrepancy:

Wikipedia cites 4,500 employees for 2026 while other sources cite 7,800. The gap likely reflects the timing of Altman's January 2026 statement to staff that the company wanted to slow hiring and "get more done with fewer people." Some workforce intelligence platforms may reflect the post-slowdown headcount while others reflect peak. The actual 2026 year-end figure will likely be below the 8,000 originally planned.

The compensation that shocks the industry:

The Wall Street Journal called OpenAI's average compensation package the richest in startup history. Approximately 4,000 core employees received stock-based compensation averaging $1.5 million each in 2025 - approximately 7 times what Google employees averaged before its IPO, adjusted for inflation. The equity bill runs approximately 46% of annual revenue.

Base salaries: $300,000-$450,000 plus significant equity. Top AI researchers: $5 million or more per Levels.fyi. Revenue per employee surpassing $3 million helps justify the extraordinary compensation structure.

The departure wave:

Between 2024 and 2025, OpenAI lost multiple senior leaders including CTO Mira Murati (September 2024), co-founders Ilya Sutskever, Andrej Karpathy, and John Schulman (who joined Anthropic). More than 10 senior departures total in 2024-2025 per Searchlab OpenAI Statistics. Each departure created potential competitive risk - the AI industry is small, and individuals with frontier model development experience are extraordinarily valuable to competitors.

OpenAI employs approximately 25-30% researchers and 30% broader engineering, with the remainder across product, operations, safety, policy, and business functions per internal breakdowns reported by workforce platforms.

For comparison data on AI company employee counts and compensation, our AI job market statistics guide covers the full picture.

The structural evolution from nonprofit to PBC is the most important legal story in OpenAI's history - and the story that makes the IPO possible.

2015: The nonprofit:
OpenAI was founded as a 501(c)(3) nonprofit research organization. All profits were to flow to the mission of benefiting humanity. No equity was issued. The founders received no financial return.

2019: The capped-profit structure:
OpenAI created a for-profit subsidiary (OpenAI LP) beneath the nonprofit parent. Investor returns were capped at 100 times their initial investment - a return ceiling designed to attract commercial capital while maintaining mission priority. Microsoft's initial $1 billion investment entered this structure.

October 2025: The PBC conversion:
OpenAI completed its restructuring into OpenAI Group PBC (Public Benefit Corporation). This structure absorbed the for-profit arm and made a public listing legally possible. The nonprofit board retains governance oversight and approximately 26% ownership. Microsoft holds approximately 27%. Employees and investors hold the remaining 47%.

Current ownership:

The PBC structure is the legal foundation for the IPO. Without it, a public listing was structurally impossible. With it, OpenAI can sell shares while maintaining its stated mission commitments in the corporate charter.

The product timeline:

Current products (July 2026):

The hardware ambitions:
July 15, 2026: OpenAI announced plans to launch a smart home speaker as its first hardware product. This move follows OpenAI's acquisition of io Products, the design company founded by Jony Ive (Apple's legendary former design chief). The hardware ambition is a significant strategic expansion beyond software.

For our complete ChatGPT user data and platform statistics, our ChatGPT statistics guide covers every current metric.

OpenAI has been an active acquirer as it builds out product capabilities beyond its core model research.

The io Products acquisition is the most strategically significant. Jony Ive, who designed the iMac, iPod, iPhone, and iPad at Apple, is now OpenAI's primary hardware design partner. The smart home speaker announced July 15, 2026 is the first visible output of this partnership. OpenAI acquiring Apple's most celebrated design talent - and Apple later suing OpenAI for trade secret theft from former employees - captures the competitive dynamic between the two companies as OpenAI moves into hardware.

The OpenAI IPO is the most anticipated and most complex public offering in technology since Facebook in 2012.

The timeline:

The competitive pressure:

Anthropic surpassed OpenAI's private valuation in May 2026, reaching $965 billion per its Series H versus OpenAI's $852 billion from March 2026. This competitive valuation pressure - with Anthropic generating $47 billion in ARR versus OpenAI's $25 billion per our Claude AI statistics guide - adds complexity to OpenAI's $1 trillion valuation target.

The structural challenges:

The IPO faces three structural challenges that complicate a straightforward public offering:

First, profitability: OpenAI loses $1.22 per dollar earned and projects losses until 2030. Public markets have grown skeptical of AI companies that prioritize growth over profitability following broader tech market repricing.

Second, the equity structure: Sam Altman owns 0% of OpenAI equity. The 7% stake reportedly being prepared for him is not yet finalized. The compensation structure for OpenAI's most important individual is unresolved entering a public offering.

Third, the mission tension: OpenAI's PBC structure commits it to balancing profit with mission. The tension between the nonprofit founding mission and the commercial pressures of a public company is a governance story that analysts and institutional investors will scrutinize.

What the S-1 will reveal:

When the public prospectus is released (expected late July or August 2026), it will for the first time disclose: exact revenue and loss figures with audit certification, customer concentration data, the terms of the Microsoft partnership, Sam Altman's equity arrangement, governance rights of the OpenAI Foundation, and the compute infrastructure cost structure that explains the current losses.

For our complete analysis of the OpenAI IPO timeline, valuation, and competitive context, our OpenAI IPO 2026 guide covers the full picture.

Microsoft ($13 billion total):
The most important commercial partnership in AI history. Microsoft invested $1 billion in 2019, added capital in subsequent rounds, and committed approximately $10 billion in January 2023. Total Microsoft investment: approximately $13 billion. Microsoft now holds approximately 27% of OpenAI. The partnership gives OpenAI access to Azure compute infrastructure at scale, while Microsoft integrates OpenAI's models into Copilot, Bing, and Azure OpenAI Service. Microsoft is simultaneously OpenAI's largest infrastructure provider, largest investor, and largest distribution partner.

Apple (multi-year deal):
Apple announced a multi-year agreement at WWDC 2024 for OpenAI's models to power parts of Apple Intelligence on iOS. This gives OpenAI distribution to 1.4 billion iPhone users. The relationship is complex: Apple is simultaneously an investor in OpenAI's October 2024 round and a distribution partner, while also reportedly developing its own AI models to reduce dependency on OpenAI over time. Apple filed suit against OpenAI in July 2026 for trade secret theft, adding legal complexity to the commercial relationship.

Disney ($1 billion - collapsed):
In December 2025, Disney signed a three-year licensing agreement giving OpenAI rights to use Mickey Mouse, Marvel, Pixar, and Star Wars characters in Sora-generated content, and announced plans to invest $1 billion in OpenAI. Both commitments collapsed when OpenAI shut down Sora's consumer app on March 24, 2026. Disney reportedly learned of the shutdown less than one hour before the public announcement.

Publisher licensing:
OpenAI has closed content licensing deals with the Associated Press, Le Monde, Axel Springer, and more than 30 other publishers to license their archives for AI training. These deals are the proactive alternative to litigation - allowing publishers to receive compensation while their content improves OpenAI's models.

The New York Times lawsuit (December 2023):
The Times sued OpenAI for training GPT models on its news articles without permission or compensation. The case is one of the most significant copyright lawsuits in AI history and will establish precedent for whether web-scraped training data constitutes copyright infringement.

The Elon Musk lawsuit (2024-2026):
Filed 2024. Musk claimed OpenAI abandoned its nonprofit mission. Jury ruled against Musk on June 5, 2026 - finding he waited too long to file. Dismissed.

The author and creator lawsuits:
20+ active lawsuits from authors, media companies, and image creators as of Q1 2026. The Getty Images vs Stability AI case sets precedent that will affect OpenAI's image generation legal exposure. Multiple class actions involving book authors whose works were allegedly used in training data without permission.

The Apple lawsuit (July 10, 2026):
Apple filed suit against OpenAI and two of its former employees in the US District Court for the Northern District of California, alleging they stole Apple trade secrets to help OpenAI accelerate its entry into the consumer hardware business. Filed three days before OpenAI announced its smart home speaker plans (July 15). The timing suggests this hardware ambition created a legal conflict with Apple's trade secret interests.

For our complete analysis of AI legal and regulatory statistics, our AI cybersecurity statistics guide covers the legal and regulatory landscape in detail.

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When was OpenAI founded?
OpenAI was founded on December 11, 2015, as a nonprofit research organization in San Francisco, California. The founding group included eleven co-founders: Sam Altman, Elon Musk, Greg Brockman, Ilya Sutskever, John Schulman, Wojciech Zaremba, Andrej Karpathy, Trevor Blackwell, Durk Kingma, Vicki Cheung, and Pamela Vagata. The company was motivated by concern that Google DeepMind was not prioritizing safety in its pursuit of artificial general intelligence. Initial funding was a $1 billion pledge from Altman, Musk, Peter Thiel, Amazon Web Services, and others.

What is OpenAI's revenue in 2026?
OpenAI's annualized revenue reached approximately $25 billion by early 2026, per multiple sources including Gradually.ai and AI Business Weekly's own reporting. The company's official 2025 revenue was $13.1 billion per Wikipedia's citation of SEC-adjacent filings, with annualized revenue exceeding $20 billion by year-end 2025. Despite this extraordinary revenue trajectory - growing from $200 million in 2023 to $25 billion in early 2026, a 125x increase in roughly three years - OpenAI is not profitable. It loses $1.22 for every dollar it earns and does not project profitability until at least 2030.

What is OpenAI's valuation in 2026?
OpenAI's most recent private valuation was $852 billion, established in the March 31, 2026 funding round that raised $122 billion led by Amazon ($50 billion), Nvidia ($30 billion), and SoftBank ($30 billion). This made OpenAI the most valuable private company in the world in March 2026, since surpassed by SpaceX and Anthropic (which reached $965 billion in May 2026). OpenAI filed a confidential S-1 with the SEC on June 8, 2026, targeting an IPO at a valuation of $852 billion to $1 trillion, though as of late June 2026 the company was reportedly leaning toward delaying the offering to 2027.

Who owns OpenAI?
OpenAI Group PBC's ownership structure as of 2026: employees and investors hold approximately 47%, Microsoft holds approximately 27%, and the OpenAI Foundation (the original nonprofit) holds approximately 26%. Sam Altman owns 0% of OpenAI equity - his salary was $76,001 per year as of 2023. After the October 2025 restructuring to PBC status, OpenAI was reportedly preparing to grant Altman approximately a 7% equity stake valued at roughly $59 billion at the $852 billion valuation. The Microsoft stake reflects its total $13 billion investment across multiple rounds.

What happened when Sam Altman was fired from OpenAI?
On Friday, November 17, 2023, OpenAI's board fired Sam Altman as CEO, citing that he was "not consistently candid in his communications with the board." Greg Brockman was simultaneously removed from the board and resigned as president. On November 20, Microsoft CEO Satya Nadella announced Altman and Brockman would join Microsoft to lead a new AI research team. In response, over 700 of OpenAI's 770 employees signed an open letter threatening to resign and join Microsoft unless the board reinstated Altman. Five days after the firing, Altman was reinstated as CEO. The original board members who orchestrated the firing departed. A new board was constituted including Bret Taylor, Larry Summers, and Adam D'Angelo.

Has OpenAI filed for an IPO?
Yes. OpenAI filed a confidential S-1 with the SEC on June 8, 2026, three days after a jury dismissed Elon Musk's lawsuit against the company. Goldman Sachs, Morgan Stanley, and JPMorgan are leading the offering. The original target was a September 2026 Nasdaq listing at a valuation of $852 billion to $1 trillion. As of late June 2026, the company was reportedly leaning toward delaying the IPO to 2027, with CFO Sarah Friar telling associates the company was eyeing a 2027 debut. Sam Altman stated any valuation below $1 trillion is a "nonstarter." The public prospectus was expected late July or August 2026.

Why did Elon Musk leave OpenAI?
Musk departed OpenAI's board in 2018 following a power struggle. In 2018, Musk proposed taking control of OpenAI to compete more directly with Google. Sam Altman and the board declined. Publicly, the departure was framed as avoiding a conflict of interest with Tesla's AI work. Musk later claimed the real reason was disagreement over the organization's direction toward commercial interests over its nonprofit mission - a claim he formalized in a 2024 lawsuit that was dismissed by a federal jury in June 2026. After leaving OpenAI, Musk founded xAI in 2023 and launched Grok as a direct competitor to ChatGPT.

How many employees does OpenAI have?
OpenAI had approximately 770 employees at the time of the November 2023 boardroom crisis. The company grew to approximately 5,700 by end of 2024 (41.5% growth) and approximately 7,850 by end of 2025 (54.9% growth). In January 2026, Sam Altman told staff the company wanted to slow hiring and accomplish more with fewer people. Current 2026 employee count varies by source: Wikipedia cites 4,500, while other workforce intelligence sources cite approximately 7,800. OpenAI pays at the top of the market - approximately 4,000 core employees received average stock-based compensation of $1.5 million each in 2025, roughly 7 times what Google employees averaged before its IPO adjusted for inflation.

OpenAI's story from December 2015 to July 2026 is without precedent in the history of technology companies.

No company has grown from $200 million to $25 billion in annual revenue in three years. No private company has reached $852 billion in valuation from a $1 billion starting point in seven years. No product has reached 100 million users in two months. And no corporate governance crisis has been resolved in five days with 700 employees threatening mass resignation and Microsoft hiring the fired CEO before the dust had settled.

The financial reality remains complicated. Revenue growing at historic rates while losing $1.22 for every dollar earned. A profitability target seven years in the future. An IPO that the CFO reportedly believes should wait until 2027 while the CEO insists any valuation below $1 trillion is a nonstarter. A structure designed to balance mission and commerce that has never been tested in public markets.

The competitive reality is also complicated. Anthropic surpassed OpenAI's private valuation in May 2026 while generating nearly double the ARR per user. Google's Gemini 3.1 Pro now leads AI benchmarks. Claude Code has 54% of the AI coding market. The company that created the modern AI era is no longer the unambiguous leader on every dimension.

What OpenAI remains is the defining brand of the AI era. 92% of Fortune 500 companies use its products. ChatGPT is the reference product that every competitor is measured against. Sam Altman is the face of AI globally in a way that no competitor's CEO matches.

Whether the IPO happens in 2026 or 2027, whether the valuation reaches $1 trillion or settles at $852 billion, the S-1 that OpenAI eventually publishes will be the most consequential financial document in AI history - disclosing for the first time the exact economics of the company that changed how the world thinks about artificial intelligence.