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

Trendingnow

1

The Bezos family just donated $100 million to help achieve one of Mayor Zohran Mamdani’s top campaign promises

2

Despite having a $165 million net worth, Scarlett Johansson says work-life balance doesn’t exist—and the first step to success is admitting that

3

Nearly 50,000 Lake Tahoe residents have to find a new power source after their energy source looks to redirect lines to data centers

1

The Bezos family just donated $100 million to help achieve one of Mayor Zohran Mamdani’s top campaign promises

2

Despite having a $165 million net worth, Scarlett Johansson says work-life balance doesn’t exist—and the first step to success is admitting that

3

Nearly 50,000 Lake Tahoe residents have to find a new power source after their energy source looks to redirect lines to data centers
Meta

Exclusive: Mark Zuckerberg publicly praises Meta’s Llama AI, but also uses rival GPT-4 to improve an internal AI coding tool

By
Kali Hays
Kali Hays
Down Arrow Button Icon
By
Kali Hays
Kali Hays
Down Arrow Button Icon
December 3, 2024, 6:52 PM ET
Meta CEO Mark Zuckerberg on stage at his company's annual Connect developer event.
Meta CEO Mark Zuckerberg.David Paul Morris/Bloomberg via Getty Images

Despite Mark Zuckerberg hailing Meta’s Llama AI model as among the best in tech, his company is happy to also use a rival when needed.

Recommended Video

Meta’s internal coding tool, Metamate, incorporates OpenAI’s GPT-4 model, alongside Meta’s own Llama model, to make the tool more useful for developers and other Meta employee who use it, two people who have used the tool told Fortune. OpenAI’s model has been a part of Metamate since at least early this year. 

The people, a current and a former Meta employee who requested anonymity for fear of retribution from Meta, noted they find Metamate helpful. It appears to pull answers to coding questions or prompts from Llama or GPT-4, they said, depending on the kind of query or how an employee uses the tool.

“It’s one of the better genAI things they’ve done,” one of the people who used the tool said of Meta’s efforts in generative AI. Metamate is similar to other AI coding tools like Microsoft’s GitHub CoPilot or Anthropic’s Claude Sonnet. 

Separately, the Chan Zuckerberg Initiative, the large philanthropic organization run by Zuckerberg and his wife, Priscilla Chan, is also an OpenAI customer, two people familiar with that entity told Fortune. CZI is developing an “educational” genAI tool based on ChatGPT with some additional customization, or what’s often referred to as a “wrapper” of genAI tech. Earlier this year, Sam Altman, CEO of OpenAI, was named to a new AI advisory board at CZI.

A spokesman for Meta declined to comment. Representatives of CZI did not respond to emails seeking comment.

While it’s not unusual for a company deploying genAI tools for their workforce to rely on more than one model, Zuckerberg has positioned Meta as a key player in the model wars. It’s a fight most companies are waging against OpenAI, which released ChatGPT two years ago and kicked off a race to catch up in order to gain a foothold in what’s widely considered to be a new era of tech. Zuckerberg has spent the last year marketing Llama as an “open source” alternative that’s as good or better than completely closed models, like those from OpenAI and Google.

When Meta released a new version of Llama mid-year, the CEO said it was” competitive with the most advanced models and leading in some areas.” By next year, Zuckerberg declared, the Llama model will be “the most advanced in the industry.”  

Nevertheless, a tool like Metamate still needs the aid of another model like GPT-4 to respond well to every query or prompt, even if Llama is one of the world’s largest models. Its most recent version was pretrained on trillions of tokens, the individual bits of information fed into an LLM, and four times more computer code than its predecessor.

One of the sources who spoke to Fortune agreed that the current version of Metamate, originally dubbed Code Compose, is helpful in technical work at Meta, noting it’s “at least as good as an intern.” Translation: It’s good at basic coding but not for more complex engineering work.

However, a side effect of AI’s helpfulness is that top executives think they need fewer workers. “It’s part of what spurs layoffs,” the person added.

Indeed, Meta has incrementally laid off scores of workers this year after cutting more than 20,000 employees between 2022 and 2023.

Are you a Meta employee or someone with insight or a tip to share? Contact Kali Hays securely through Signal at +1-949-280-0267 or at kali.hays@fortune.com.

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 Author
By Kali Hays
See full bioRight Arrow Button Icon

Latest in

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
  • Pinterest icon

Latest in

Mark Zuckerberg, chief executive officer of Meta Platforms Inc., left, and US President Donald Trump during a dinner with tech leaders in the State Dining Room of the White House in Washington, DC, US, on Thursday, Sept. 4, 2025. US President Donald Trump said he would be imposing tariffs on semiconductor imports "very shortly" but spare goods from companies like Apple Inc. that have pledged to boost their US investments. Photographer: Will Oliver/EPA/Bloomberg via Getty Images
Big TechDonald Trump
How Trump’s ‘unusual’ brokerage account traded around his own market-moving decisions—selling hyperscalers and buying energy stocks during the war
By Eva RoytburgMay 15, 2026
3 hours ago
Berkshire triples Alphabet stake and buys Delta stock while dumping Amazon in Greg Abel’s first quarter as CEO
InvestingBerkshire Hathaway
Berkshire triples Alphabet stake and buys Delta stock while dumping Amazon in Greg Abel’s first quarter as CEO
By Josh Funk and The Associated PressMay 15, 2026
4 hours ago
SpaceX said to plan public IPO filing as soon as Wednesday
Big TechIPOs
SpaceX said to plan public IPO filing as soon as Wednesday
By Anthony Hughes, Bailey Lipschultz and BloombergMay 15, 2026
4 hours ago
America’s productivity boom started before AI, and a Stanford economist who decoded the Great Resignation says working from home is the reason why
Future of Workremote work
America’s productivity boom started before AI, and a Stanford economist who decoded the Great Resignation says working from home is the reason why
By Marco Quiroz-GutierrezMay 15, 2026
7 hours ago
A man stands looking out over his front porch where a sign reads, "No data centers."
EnvironmentData centers
Startups are installing tiny data centers in people’s homes to reduce strain on the beleaguered electrical grid
By Sasha RogelbergMay 15, 2026
8 hours ago
deep-sea mining equipment
EnvironmentChina
China dominates the minerals that power AI. But one company claims there’s enough supply on the ocean floor to last for hundreds of years
By Jake AngeloMay 15, 2026
10 hours ago

Most Popular

The Bezos family just donated $100 million to help achieve one of Mayor Zohran Mamdani’s top campaign promises
Politics
The Bezos family just donated $100 million to help achieve one of Mayor Zohran Mamdani’s top campaign promises
By Jake AngeloMay 12, 2026
3 days ago
Despite having a $165 million net worth, Scarlett Johansson says work-life balance doesn’t exist—and the first step to success is admitting that
Success
Despite having a $165 million net worth, Scarlett Johansson says work-life balance doesn’t exist—and the first step to success is admitting that
By Preston ForeMay 13, 2026
3 days ago
Nearly 50,000 Lake Tahoe residents have to find a new power source after their energy source looks to redirect lines to data centers
Travel & Leisure
Nearly 50,000 Lake Tahoe residents have to find a new power source after their energy source looks to redirect lines to data centers
By Catherina GioinoMay 12, 2026
3 days ago
The airplane fuel shortage is a myth propagated by airlines who want to cancel unprofitable flights, says private jet CEO
Energy
The airplane fuel shortage is a myth propagated by airlines who want to cancel unprofitable flights, says private jet CEO
By Jim EdwardsMay 14, 2026
2 days ago
Current price of oil as of May 14, 2026
Personal Finance
Current price of oil as of May 14, 2026
By Joseph HostetlerMay 14, 2026
2 days ago
Top economist says $39 trillion national debt leaves government worse prepared for recession than ever
Economy
Top economist says $39 trillion national debt leaves government worse prepared for recession than ever
By Eva RoytburgMay 14, 2026
2 days 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.