Rational
First Zero-human Accounting Firm
YC Summer 2026Artificial IntelligenceFinanceB2BEnterprise
About Rational
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.
Founders
Jibril Moinuddin
Founder
CEO at Rational. Previously founded STEMplicity Education. Dropped out of University of Michigan.
Christ Xu
Founder
CTO at Rational. Previously exited for $400K and youngest Senior SWE at Tencent. Jane Street ML Engineer and OpenAI SWE intern. 2x IOI Camp, IMO Camp, published algorithm researcher.