As Shelena said it means Artificial General Intelligence. It’s a term coined to distinguish a hypothetical future system with actual intelligence in the colloquial sense of the word from currently existing “Artificial Intelligence” systems, because that has turned into an almost meaningless buzzword used to sell machine learning systems to investors and the general public over the last two decades or so. Don’t get me wrong, “AI” has indeed made impressive progress as of late, I’m not doubting that. But the existing systems are hardly “intelligent” in the sense that most people would define that word.