Alexandr Wang, co-founder and CEO of Scale AI, told employees Thursday he is stepping down to join Meta Platforms, confirming his exit just days after Meta acquired a 49% stake in the company through a $14.

Here’s what Scale AI co-founder Alexandr Wang knows that Meta doesn’t.

Scale AI co-founder Alexandr Wang is such an enthusiastic networker that his former roommate — OpenAI Chief Executive Officer Sam Altman — once jokingly told him to tone it down a bit.