• 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
,
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

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
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

Latest in Tech

Young banker
SuccessCareers
Is AI really killing finance and banking jobs? Experts say Wall Street’s layoffs may be more hype than takeover—for now
By Emma BurleighDecember 21, 2025
3 hours ago
InnovationDefense
Shield AI took its drones from the ‘Batcave’ to the battlefield. Now the $5.6 billion defense-tech startup’s new CEO says it’s at an inflection point
By Jessica MathewsDecember 21, 2025
3 hours ago
Gao
AIBrainstorm AI
Top AI investors say maybe it’s a bubble, but ‘bubbles are good for innovation’
By Nick LichtenbergDecember 21, 2025
4 hours ago
EnergyData centers
Georgia regulators approve 50% power capacity boost, betting that massive AI data center demand will eventually materialize
By Jeff Amy and The Associated PressDecember 20, 2025
14 hours ago
Big TechCEO salaries and executive compensation
Elon Musk adds to his $679 billion fortune after Delaware court reverses its earlier decision and awards him a $55 billion Tesla pay package
By Michael Liedtke and The Associated PressDecember 20, 2025
15 hours ago
Bill Gates and Phoebe Gates attend the 2022 TIME100 Gala on June 08, 2022 in New York City.
TechBill Gates
Bill Gates identifies the biggest burden being passed on to his children after seeing his daughter harassed online 
By Eleanor PringleDecember 20, 2025
18 hours ago

Most Popular

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
9 days ago
placeholder alt text
Success
The scientist who helped create AI says it’s only ‘a matter of time’ before every single job is wiped out—even safer trade jobs like plumbing
By Orianna Rosa RoyleDecember 19, 2025
2 days ago
placeholder alt text
Future of Work
'They'll lose their humanity': Dartmouth professor says he's surprised just how scared his Gen Z students are of AI
By Nick LichtenbergDecember 20, 2025
1 day ago
placeholder alt text
Future of Work
A Walmart employee nearly doubled her pay after entering its pipeline for skilled tradespeople. 'I was able to move out of my parents' house'
By Anne D'Innocenzio and The Associated PressDecember 20, 2025
15 hours ago
placeholder alt text
Economy
Sneaking unemployment rate means the U.S. economy is inching closer to a key recession indicator, says Moody’s
By Eleanor PringleDecember 19, 2025
2 days ago
placeholder alt text
Economy
James Talarico says the biggest 'welfare queens' in America are 'the giant corporations that don't pay a penny in income taxes'
By Dave SmithDecember 20, 2025
1 day ago

© 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.