AI-Native Accounting Startup Rillet Hits $1B Valuation After 48-Hour Series C

Rillet raised $100 million in a Series C at a $1 billion valuation, reaching unicorn status two years after exiting stealth. ICONIQ's Seth Pierrepont led the round, which closed within 48 hours of a board meeting where Rillet was not actively fundraising. The raise followed a quarter in which annualized revenue doubled. Total capital raised now stands at $200 million.