• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia
Techfinances

Sam Altman’s OpenAI to be second-most valuable U.S. startup behind Elon Musk’s SpaceX based on early-talks funding round

By
Gillian Tan
Gillian Tan
,
Edward Ludlow
Edward Ludlow
,
Shirin Ghaffary
Shirin Ghaffary
and
Bloomberg
Bloomberg
Down Arrow Button Icon
By
Gillian Tan
Gillian Tan
,
Edward Ludlow
Edward Ludlow
,
Shirin Ghaffary
Shirin Ghaffary
and
Bloomberg
Bloomberg
Down Arrow Button Icon
December 23, 2023, 2:29 PM ET
OpenAI CEO Sam Altman.
OpenAI CEO Sam Altman.Dustin Chambers/Bloomberg via Getty Images

OpenAI is in early discussions to raise a fresh round of funding at a valuation at or above $100 billion, people with knowledge of the matter said, a deal that would cement the ChatGPT maker as one of the world’s most valuable startups.

Recommended Video

Investors potentially involved in the fundraising round have been included in preliminary discussions, according to the people, who asked not to be identified to discuss private matters. Details like the terms, valuation and timing of the funding round haven’t yet been finalized and could still change, the people said.

If the funding round happens as planned, it would make the artificial intelligence darling the second-most valuable startup in the US, behind only Elon Musk’s Space Exploration Technologies Corp., according to data from CBInsights.

OpenAI declined to comment.

The company is set to complete a separate tender offer in early January, which would allow employees to sell their shares at a valuation of $86 billion, Bloomberg previously reported. That is being led by Thrive Capital and saw more demand from investors than there was availability, people familiar with the matter have said.

OpenAI’s rocketing valuation mirrors the AI frenzy it kicked off one year ago after releasing ChatGPT, a chatbot capable of composing eerily human sentences and even poetry in response to simple prompts. The company became Silicon Valley’s hottest startup, raising $13 billion to date from Microsoft Corp., and spurred a new appreciation for the promise of AI that changed the tech industry landscape within a few months.

Amazon.com Inc. and Alphabet Inc. have since poured billions into OpenAI-rival Anthropic. Salesforce Inc. led an investment into Hugging Face that valued it at $4.5 billion, and Nvidia Corp., which makes many of the semiconductors that power AI tasks, said earlier this month it made more than two dozen investments in 2023.

OpenAI has also held discussions to raise funding for a new chip venture with Abu Dhabi-based G42, according to people with knowledge of the matter.

The startup has discussed raising between $8 billion and $10 billion from G42, said one of the people, all of whom requested anonymity to discuss confidential information. It’s unclear whether the chips venture and wider company funding efforts are related.

OpenAI Chief Executive Officer Sam Altman had been seeking capital for the chipmaking project, code-named Tigris. The goal is to produce semiconductors that can compete with those from Nvidia, which currently dominates the AI chip market, Bloomberg News reported last month.

In October, G42 announced a partnership with OpenAI “to deliver cutting-edge AI solutions to the UAE and regional markets.” No financial details were provided. The firm, founded in 2018, is led by Sheikh Tahnoon bin Zayed Al Nahyan, the UAE’s national security adviser and chair of the Abu Dhabi Investment Authority.

OpenAI’s future looked briefly uncertain after its board suddenly fired Altman earlier last month. At the time, some investors considered writing their stakes down to zero. But after five days of leadership tumult, Altman was brought back and a new board was named. The company has aimed to signal to customers that it’s refocusing on its products following the upheaval.

— With assistance from Hannah Miller

Join us at the Fortune Workplace Innovation Summit May 19–20, 2026, in Atlanta. The next era of workplace innovation is here—and the old playbook is being rewritten. At this exclusive, high-energy event, the world’s most innovative leaders will convene to explore how AI, humanity, and strategy converge to redefine, again, the future of work. Register now.
About the Authors
By Gillian Tan
See full bioRight Arrow Button Icon
By Edward Ludlow
See full bioRight Arrow Button Icon
By Shirin Ghaffary
See full bioRight Arrow Button Icon
By Bloomberg
See full bioRight Arrow Button Icon

Latest in Tech

AIchief executive officer (CEO)
Microsoft AI boss Suleyman opens up about his peers and calls Elon Musk a ‘bulldozer’ with ‘superhuman capabilities to bend reality to his will’
By Jason MaDecember 13, 2025
8 hours ago
InvestingStock
There have been head fakes before, but this time may be different as the latest stock rotation out of AI is just getting started, analysts say
By Jason MaDecember 13, 2025
14 hours ago
Politicsdavid sacks
Can there be competency without conflict in Washington?
By Alyson ShontellDecember 13, 2025
14 hours ago
InnovationRobots
Even in Silicon Valley, skepticism looms over robots, while ‘China has certainly a lot more momentum on humanoids’
By Matt O'Brien and The Associated PressDecember 13, 2025
16 hours ago
Sarandos
Arts & EntertainmentM&A
It’s a sequel, it’s a remake, it’s a reboot: Lawyers grow wistful for old corporate rumbles as Paramount, Netflix fight for Warner
By Nick LichtenbergDecember 13, 2025
20 hours ago
Oracle chairman of the board and chief technology officer Larry Ellison delivers a keynote address during the 2019 Oracle OpenWorld on September 16, 2019 in San Francisco, California.
AIOracle
Oracle’s collapsing stock shows the AI boom is running into two hard limits: physics and debt markets
By Eva RoytburgDecember 13, 2025
21 hours ago

Most Popular

placeholder alt text
Success
Apple cofounder Ronald Wayne sold his 10% stake for $800 in 1976—today it’d be worth up to $400 billion
By Preston ForeDecember 12, 2025
2 days ago
placeholder alt text
Economy
Tariffs are taxes and they were used to finance the federal government until the 1913 income tax. A top economist breaks it down
By Kent JonesDecember 12, 2025
2 days ago
placeholder alt text
Success
40% of Stanford undergrads receive disability accommodations—but it’s become a college-wide phenomenon as Gen Z try to succeed in the current climate
By Preston ForeDecember 12, 2025
2 days ago
placeholder alt text
Economy
The Fed just ‘Trump-proofed’ itself with a unanimous move to preempt a potential leadership shake-up
By Jason MaDecember 12, 2025
1 day ago
placeholder alt text
Success
Apple CEO Tim Cook out-earns the average American’s salary in just 7 hours—to put that into context, he could buy a new $439,000 home in just 2 days
By Emma BurleighDecember 12, 2025
2 days ago
placeholder alt text
Economy
For the first time since Trump’s tariff rollout, import tax revenue has fallen, threatening his lofty plans to slash the $38 trillion national debt
By Sasha RogelbergDecember 12, 2025
1 day ago
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • Future 50
  • World’s Most Admired Companies
  • See All Rankings
Sections
  • Finance
  • Leadership
  • Success
  • Tech
  • Asia
  • Europe
  • Environment
  • Fortune Crypto
  • Health
  • Retail
  • Lifestyle
  • Politics
  • Newsletters
  • Magazine
  • Features
  • Commentary
  • Mpw
  • CEO Initiative
  • Conferences
  • Personal Finance
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
About Us
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map

© 2025 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.