What is open-source AI anyway?

red and white open neon signage

A key artificial intelligence industry body has released a long-awaited definition that could affect how different AI models are viewed — if not regulated. The Open Source Initiative, a public benefit corporation, sets standards for what constitutes open-source systems in the technology industry. Over the past year, the group has investigated a big question: What constitutes open-source AI?

Meta has been one of the leading voices on open-source AI development with its LLaMA suite of large language models. But some critics have argued it isn’t truly open-source because it has licensing rules about how third-party developers can use its models and isn’t fully transparent about its training data.

Now, according to the new definition, an AI system must meet these four requirements to be considered open-source:

  1. It can be used by any person and without having to ask for permission
  2. Outsiders need to be able to study how the system works and inspect its components
  3. Developers need to be able to modify the system
  4. Users need to be able to share the system with others with or without modifications — for any purpose

Meta took issue with the new definition, maintaining that its models are, in fact, open-source. “There is no single open-source AI definition, and defining it is a challenge because previous open-source definitions do not encompass the complexities of today’s rapidly advancing AI models,” a company spokesperson told TechCrunch.

Still, the definition could help regulators and international organizations differentiate between open- and closed-source (or proprietary) models. That’s important. Recently, California lawmakers got pushback for advancing a bill requiring AI developers to have a “kill switch” for shutting down their models — something critics called a “de facto ban on open-source development.” (The bill was ultimately vetoed by Gov. Gavin Newsom.)

More from GZERO Media

When Walmart stocks its shelves with homegrown products like Fischer & Wieser’s peach jam, it’s not just selling food — it’s creating opportunity. Over two-thirds of what Walmart buys is made, grown, or assembled in America, fueling jobs and growth in communities nationwide. Walmart’s $350 billion commitment to US manufacturing is supporting 750,000 jobs and empowering small businesses to sell more, hire more, and strengthen their hometowns. From farms to shelves, Walmart’s investment keeps local businesses thriving. Learn how Walmart's commitment to US manufacturing is supporting 750K American jobs.

- YouTube

"We don’t want an outcome where everyone in the world is not participating equally in this opportunity economy that’s coming from AI,” says Baroness Joanna Shields, Executive Chair of the Responsible AI Future Foundation. Speaking with GZERO Media’s Tony Maciulis, Shields emphasizes that responsible AI must deliver impact.

A Venezuelan Navy patrol boat sails off the Caribbean coast, amid heightened tensions with the U.S., in Puerto Cabello, Venezuela, October 24, 2025.
REUTERS/Juan Carlos Hernandez

On Tuesday, the US struck four boats off the Pacific coast of Central America, killing 14 people who the White House said were smuggling narcotics.

Israeli warplanes launched heavy airstrikes targeting an entire residential block near the Al-Sousi Mosque in Al-Shati refugee camp, west of Gaza City. The strikes destroyed a large number of homes, levelling some to the ground. Civil defense and ambulance teams rushed to the scene and are working to rescue victims and recover bodies from under the rubble amidst widespread destruction and significant difficulties in rescue operations due to the ongoing bombardment and a shortage of equipment.

Israeli strikes in Gaza killed 100 people last night, according to local officials, in the deadliest day since the signing of the ceasefire three weeks ago.