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Rational

AI accounting agents carrying out bookkeeping work inside a business’s existing tools.

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Company model
AI-native service
Category
Accounting, tax & audit
Headquarters
San Francisco (YC-listed location)
Team size
2 (YC-listed team)
Rational — official company image

AI accounting agents carrying out bookkeeping work inside a business’s existing tools.

What Rational does

Rational builds AI agents to carry out accounting work from client intake through bookkeeping and filing workflows. Its public positioning centers on an accounting operation run by AI employees rather than a conventional firm using an assistant beside its staff.

The agents learn the customer’s processes and work directly in the tools the finance team already uses. The aim is to take on the execution of recurring accounting tasks rather than requiring the customer to move every workflow into a new application.

Rational is an early-stage YC-backed business. Its model is distinct from an accounting dashboard or a general chat assistant: the offering is for the work to be performed within an existing accounting operation.

  • AI accounting
  • Bookkeeping
  • Client intake
  • Accounting workflows
  • Process automation
  • Existing-system execution

Company details

Headquarters
San Francisco (YC-listed location)
Founded
2026
Team size
2 (YC-listed team)

Founders & leadership

Jibril MoinuddinCo-founder
Christ XuCo-founder

Investors & backers

Y Combinator lists Rational in its company directory. No funding amount is inferred from participation.

  • Y Combinator

Explore Rational

Rational builds AI agents to carry out accounting work from client intake through bookkeeping and filing workflows. Its public positioning centers on an accounting operation run by AI employees rather than a conventional firm using an assistant beside its staff.

Visit Rational

Sources & profile notes

This profile brings together published information about Rational, including its offering, company details and supporting sources. Review the original material for the full context.

Last reviewed October 21, 2026. Prices and availability may change; inclusion is not an endorsement.