How AI accounting startup Rillet raised $100M and became a unicorn in 48 hours

Rillet co-founder and CEO Nicholas Koop seems justifiably confident as we talk over Zoom a day after his company announced a $100 million raise at a $1 billion valuation. The US has has a shortage of accountants right now, which is driving growth of his AI-native accounting platform so much, he raised that cash in 48 hours without even trying. Rillet emerged from stealth two years ago. Since then, it has raised $200 million from top investors like ICONIQ, Andreessen Horowitz, and Sequoia. It’s also amassed 600 customers, most of whom are looking to ditch legacy accounting systems like Oracle and NetSuite, Koop says. A…