Samantha Lee/InsiderSuddenly, it's feeling very "2021" for tech companies with an AI story and a viable business model.AI startups are attracting rapid funding rounds, in contrast to the doldrums of the overall market.Investors face pressure to secure stakes in top AI firms, risking inflated valuations.In February, Glean announced a $200 million funding round valuing the AI enterprise software startup at $2.2 billion.