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

Trendingnow

1

The millennial generation has split, new Fed research shows: Those over 35 are edging toward boomer-style wealth, while everyone else falls behind

2

Mark Cuban says he has the solution to growing income inequality, and it's to reward every employee—from CEO to janitor—with company stock

3

Mathematicians grapple with a ‘very rapid and very unsettling change’ as AI cracks yet another century-old problem

1

The millennial generation has split, new Fed research shows: Those over 35 are edging toward boomer-style wealth, while everyone else falls behind

2

Mark Cuban says he has the solution to growing income inequality, and it's to reward every employee—from CEO to janitor—with company stock

3

Mathematicians grapple with a ‘very rapid and very unsettling change’ as AI cracks yet another century-old problem
TechAI

Sam Altman says OpenAI’s new o3 ‘reasoning’ models begin the ‘next phase’ of AI. Is this AGI?

Sharon Goldman
By
Sharon Goldman
Sharon Goldman
AI Reporter
Down Arrow Button Icon
Sharon Goldman
By
Sharon Goldman
Sharon Goldman
AI Reporter
Down Arrow Button Icon
December 20, 2024, 3:44 PM ET
OpenAI CEO Sam Altman
OpenAI CEO Sam Altman Eugene Gologursky—Getty Images for The New York Times
Add Fortune on Google for similar content.

OpenAI has unveiled a preview of its new o3 reasoning models, which, CEO Sam Altman said immodestly, begin the “next phase” of AI.

Recommended Video

The models, announced Friday, did so well on a prominent benchmark that some immediately questioned whether the company had in fact achieved the AI industry’s holy grail: artificial general intelligence, or AGI. It’s a much sought-after sci-fi milestone, when AI can perform at least as well as humans at certain tasks.

However, François Chollet, the benchmark’s creator, who recently left Google Research, responded with an unequivocal no. In a post on X after the OpenAI announcement, he said that while the new model is “very impressive and represents a big milestone on the way towards AGI,” there are still a “fair number” of simple tasks that o3 cannot solve. Still, Chollet added, “these capabilities are new territory, and they demand serious scientific attention.”

Meanwhile, the ARC Prize, a nonprofit initiative dedicated to advancing AGI research by challenging participants to solve the so-called ARC-AGI benchmark that OpenAI did so well on, also noted how o3 is a major advancement in AI. In a blog post, the organization said, “This is a surprising and important step-function increase in AI capabilities, showing novel task adaptation ability never seen before in the GPT-family models.”

The ARC-AGI benchmark rates an AI system’s ability to generalize and acquire new skills efficiently.

The announcement of o3 comes just a month after the AI community had grappled with speculation that the race to AGI—driven by Big Tech giants and well-funded startups like OpenAI and Anthropic—was facing significant hurdles. Concerns have centered on the so-called scaling laws, which suggest that AI performance improves predictably with increases in model size, dataset size, and computational power.

Critics argue that these predictions may no longer be holding up, and that improvements in AI are slowing. Inevitably, this raises questions about the limits of current AI approaches.

Still, the improvements represented by o3 show that those limits have not been reached yet. While it’s not AGI, the new models could lead to chatbots that handle more complex queries and solve problems step-by-step. AI search could evolve with improved semantic understanding (finding information not just based on keywords but on deeper meanings and relationships between concepts). The models may also generate more coherent stories and essays, as well as real-time problem solving.

The unveiling of the o3 model came on the 12th day of OpenAI’s product announcements, a marketing blitz timed to the holiday season. However, the “gift” can’t immediately be opened. The new models—o3 and o3 mini, a smaller, distilled model fine-tuned for particular tasks—are only available to safety researchers, who can apply to “explore and surface the potential safety and security implications of the next frontier models.”

OpenAI hasn’t confirmed a public release date.

OpenAI released its first model with what it called “enhanced reasoning capabilities,” called the o1 model, just three months ago. After the o3 announcement (which skipped o2 entirely), OpenAI researcher Noam Brown posted on X that “we have every reason to believe this trajectory will continue.”

About the Author
Sharon Goldman
By Sharon GoldmanAI Reporter
LinkedIn icon

Sharon Goldman is an AI reporter at Fortune and co-authors Eye on AI, Fortune’s flagship AI newsletter. She has written about digital and enterprise tech for over a decade.

See full bioRight Arrow Button Icon
Add Fortune on Google for similar content.

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
Fortune Secondary Logo
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • World's Most Admired Companies
  • See All Rankings
  • Lists Calendar
Sections
  • Finance
  • Fortune Crypto
  • Features
  • Leadership
  • Health
  • Commentary
  • Success
  • Retail
  • Mpw
  • Tech
  • Lifestyle
  • CEO Initiative
  • Asia
  • Politics
  • Conferences
  • Europe
  • Newsletters
  • Personal Finance
  • Environment
  • Magazine
  • 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
  • Group Subscriptions
About Us
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • TikTok icon
  • YouTube icon

Latest in Tech

Jensen Huang made his $172 billion fortune on AI chips. His family’s $75 million gift to Vanderbilt argues art decides what technology is for
Big Techphilanthropy
Jensen Huang made his $172 billion fortune on AI chips. His family’s $75 million gift to Vanderbilt argues art decides what technology is for
By Sydney LakeJuly 23, 2026
4 hours ago
Thijn Lamers is Co-Founder and President, Noah.
Commentarystart-ups
Adyen co-founder: Europe does not need more ambition. It needs to stop hiding it
By Thijn LamersJuly 23, 2026
4 hours ago
Sundar Pichai, chief executive officer of Alphabet Inc.
AIAlphabet
Anthropic and SpaceX just handed Google the biggest profit quarter in company history—on paper
By Eva RoytburgJuly 22, 2026
12 hours ago
‘It’s called StreetEasy, not StreetHard’: Mamdani cracks down on scourge of ‘housefishing’ and ‘real estate slop’
Real EstateHousing
‘It’s called StreetEasy, not StreetHard’: Mamdani cracks down on scourge of ‘housefishing’ and ‘real estate slop’
By Tatiana SatauaJuly 22, 2026
14 hours ago
As Washington panics about Chinese AI, Jensen Huang says open-source models like Kimi are ‘excellent’ and should be embraced, not banned
AIChina
As Washington panics about Chinese AI, Jensen Huang says open-source models like Kimi are ‘excellent’ and should be embraced, not banned
By Marco Quiroz-GutierrezJuly 22, 2026
14 hours ago
OpenAI CEO Sam Altman sits next to U.S. President Donald Trump.
AITech regulation
OpenAI’s rogue hacking incident was a warning shot. Will it be a wake-up call to finally create AI safety regulation?
By Jeremy Kahn and Emily ForliniJuly 22, 2026
15 hours ago

Most Popular

The millennial generation has split, new Fed research shows: Those over 35 are edging toward boomer-style wealth, while everyone else falls behind
Real Estate
The millennial generation has split, new Fed research shows: Those over 35 are edging toward boomer-style wealth, while everyone else falls behind
By Nick LichtenbergJuly 22, 2026
18 hours ago
Mark Cuban says he has the solution to growing income inequality, and it's to reward every employee—from CEO to janitor—with company stock
Success
Mark Cuban says he has the solution to growing income inequality, and it's to reward every employee—from CEO to janitor—with company stock
By Sasha RogelbergJuly 20, 2026
3 days ago
Mathematicians grapple with a ‘very rapid and very unsettling change’ as AI cracks yet another century-old problem
AI
Mathematicians grapple with a ‘very rapid and very unsettling change’ as AI cracks yet another century-old problem
By Eva RoytburgJuly 21, 2026
2 days ago
OpenAI says its AI models secretly broke out of a secure test environment and hacked into AI company Hugging Face in order to cheat on an evaluation
Cybersecurity
OpenAI says its AI models secretly broke out of a secure test environment and hacked into AI company Hugging Face in order to cheat on an evaluation
By Jeremy Kahn and Emily ForliniJuly 21, 2026
2 days ago
Despite a $156 million contract, Knicks star Jalen Brunson still calls his parents for financial advice any time he makes a big purchase
Success
Despite a $156 million contract, Knicks star Jalen Brunson still calls his parents for financial advice any time he makes a big purchase
By Emma BurleighJuly 21, 2026
2 days ago
Scott Bessent casually says the U.S. has more than $1 trillion in gold—and that it doesn’t matter for the dollar
Economy
Scott Bessent casually says the U.S. has more than $1 trillion in gold—and that it doesn’t matter for the dollar
By Sasha RogelbergJuly 22, 2026
16 hours ago

© 2026 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.