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.

Here’s what you need to know about the deal, what its implications may be, and why Wang is of such interest to Zuckerberg’s sprawling digital content company. Wang dropped out of MIT in his freshman year to co-found Scale with social media influencer and engineer Lucy Guo.