Y Combinator startups are fastest growing, most profitable in fund history because of AI

Silicon Valley’s earliest stage companies are getting a major boost from artificial intelligence.

Startup accelerator Y Combinator — known for backing Airbnb, Dropbox and Stripe — this week held its annual demo day in San Francisco, where founders pitched their startups to an auditorium of potential venture capital investors.

Y Combinator CEO Garry Tan told CNBC that this group is growing significantly faster than past cohorts and with actual revenue. For the last nine months, the entire…