United States · Funded startup
11 rounds we have observed, with the 35 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.
Raised this monthValuation: $840B, Mar 2026
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Funding summaryUpdated 5 Nov 2026
$230Braised across 11 rounds since 2019, from 67 sources
Each circle is a round, placed by date and sized by amount. The line above is the running total.
Sequoia Capital
Andreessen Horowitz
Founders Fund
Coatue
SoftBank BB Corp
MGXReported by Wowtale and 7 others
Reported by Business Upturn and 7 others
Andreessen HorowitzLead
TPGLeadSoftBank BB CorpLead
T. Rowe PriceLeadMGXLead
D. E. Shaw VenturesLeadSequoia Capital
Insight Partners
Microsoft
Thrive CapitalReported by Crunchbase News and 11 othersSEC filing: $3.0M sold
CoatueLeadSoftBank BB CorpLead
BlackRockMGXReported by Crypto Briefing and 12 others
Dragoneer InvestmentLeadSequoia CapitalAndreessen HorowitzFounders Fund
Tiger Global ManagementCoatue
FidelityTPGT. Rowe PriceThrive Capital
Blackstone Group
Altimeter
D1 Capital PartnersReported by TechCrunch and 3 others
Reported by Crunchbase News and 8 others
Thrive CapitalLead
Khosla VenturesFidelitySoftBank BB Corp
JP Morgan Chase
Santander
Wells FargoMicrosoftAltimeterMGX
Boman GroupReported by Crunchbase News and 8 others
The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.
SoftBank BB CorpLLCoatueLLAndreessen HorowitzLMGXLSequoia CapitalNVIDIALThrive CapitalFounders FundMicrosoftTPGLMissing a round, or an investor who was in one? Tell us.
These 40 firms list OpenAI as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above.
OpenAI's investors include SoftBank BB Corp, Coatue, Andreessen Horowitz, MGX and Sequoia Capital, and 30 more on record. Coatue led its latest round.
OpenAI has raised $230B across 11 rounds since 2019.
OpenAI's most recent round was an Undisclosed round of $11B in Oct 2026, led by Coatue.
OpenAI's largest round on record is $110B (Growth), in Mar 2026, led by Andreessen Horowitz.
OpenAI's first round on record, in Jul 2019, was backed by Microsoft.
OpenAI's latest named round is an Undisclosed round, in Oct 2026.
OpenAI is based in the United States.
Blue Owl Capital led the Undisclosed round in 2025; Coatue led the Growth in 2026; Andreessen Horowitz led the Growth in 2026; United Arab Emirates investors led the Undisclosed round in 2026.
In the same sector, and raised in the last eighteen months.
Empire of AI: Dreams and Nightmares in Sam Altman's OpenAI
Karen Hao · 2025
4.02 from 15,740 ratings on Goodreads
From a brilliant longtime AI insider with intimate access to the world of Sam Altman's OpenAI from the beginning, an eye-opening account of arguably the most fateful tech arms race in history, reshaping the planet in real time, from the cockpit of the company that is driving the…
The Optimist: Sam Altman, OpenAI, and the Race to Invent the Future
Keach Hagey · 2025
3.79 from 1,312 ratings on Goodreads
From an acclaimed Wall Street Journal reporter comes the first biography of the enigmatic leader of the AI revolution, charting his ascent within the tech world as well as his ambitions for this powerful new technology. On November 30, 2022, OpenAI released ChatGPT, a chatbot…
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