Zuckerberg says Meta’s frontier AI research team has about 100 people

Meta employs tens of thousands of people. According to Mark Zuckerberg, the group actually building its frontier AI models could fit inside a mid-sized lecture hall. In a recent video appearance, Zuckerberg said Meta’s frontier research team has about 100 people. The infrastructure team that keeps those researchers supplied with compute also has about 100 people. A small team inside a big lab The research group sits inside Meta Superintelligence Labs, or MSL. Meta launched the unit in mid-2025 to consolidate its scattered AI efforts under one roof. MSL is led by Chief AI Officer Alexandr Wang, with Nat Friedman serving as co-lead. The broader organization has grown to around 3,400 employees. The initial core superintelligence team numbered approximately 50 people. Zuckerberg’s latest figure of about 100 suggests that group has roughly doubled while staying within the size range he has long favored. Back in September 2025, during a podcast appearance with Rowan Cheung, Zuckerberg laid out his thinking. He said the ideal team size for frontier AI work is somewhere between 50 and 100 researchers. His reasoning centered on focus. A small group, he argued, lets researchers dig fully int...