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First Zero-human Accounting Firm

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.
Active Founders
Jibril Moinuddin
Jibril Moinuddin
Founder/CEO
CEO at Rational. Previously founding engineer at Buckeye AI, TrueFoundry. Founded STEMplicity Education. Dropped out of University of Michigan. Non-Trivial Fellow.
Christ Xu
Christ Xu
Founder/CTO
CTO at Rational. Prev Youngest Tencent Senior SWE. 2x IOI Camp, IMO Camp, published algo researcher.
Company Launches
Rational - First Zero-human Accounting Firm
See original launch post

https://www.youtube.com/watch?v=IX4-sMxdslk

We’re disrupting the disruptors.

You’ve heard of so many AI accounting startups already. These new “AI-native” accounting firms are still designed to be run by humans in two facets: the first 25%, fostering client relationships, and the final 25%, signing off and filing with the IRS.

Josh Kushner’s company, Thrive Holdings, the largest disruptor in this space, explicitly argues that agents will never replace this [1]. Their reasoning? Agents don’t carry trust.

Currently, agents are not trusted, humans are. That’s why every AI startup nowadays does the work, and leaves judgment to a human. But this is changing, and we’re early. As new agent-centric companies grow (Instinct, Natural, AgentMail), agents become common in daily life and work, and eventually will become trusted entities [2].

Once agents are trusted, there is no reason they cannot own entire, traditionally trust-heavy industries, end-to-end. Rational is building for that world.

Reach out to founders@rational.to or visit rational.to if interested in learning more.


[1] https://www.thriveholdings.com/long-humans. A fraction of the market does care about trust and the human relationship with their accountant, but most of us definitely do not want to spend a second more with one than we have to.

[2] These companies inherently bet on agents to proliferate in society. We also believe AI will continue to get better and safer. Since trust is achieved through consistent, positive actions, and it is in the interest of the entire tech industry for their agents to produce consistent positive actions, our firm will be the first to enjoy the principles to do concrete work in a massive market.

Previous Launches
AI employees for in-house accounting teams
24/7 hires to solve the talent shortage within your firm's existing stack
Jobs at Rational
San Francisco, CA, US
$120K - $200K
0.50% - 2.00%
Any (new grads ok)
San Francisco, CA, US
$150K - $200K
0.50% - 2.00%
Any (new grads ok)
San Francisco, CA, US
$8K - $12K / monthly
Any
San Francisco, CA, US
$120K - $200K
0.50% - 2.00%
Any (new grads ok)
Rational
Founded:2026
Batch:Summer 2026
Team Size:2
Status:
Active
Location:San Francisco
Primary Partner:Jared Friedman