Rational is building the first accounting firm with no humans. It's entirely run by our AI employees, who go from client intake to doing the books to filing with the IRS. We secure 90% cost reduction, 24/7 support, and an overall seamless experience for businesses.

The company was founded by Jibril Moinuddin; Christ Xu. It is part of YC Summer 2026. It is based in San Francisco, CA, USA.