Rational
New accelerator entry · 2026-07-16 · the record
In their words
Rational builds AI employees for in-house enterprise accounting teams. Enterprises process high volumes of complex, multinational transactions that require broad expertise in international tax and accounting. Powered by the most accurate tax model in the world, we save teams enormous time on tax and close work while also eliminating unnecessary audit costs.
What the record says
Rational lists 4 open roles on its directory entry.
Founders, titles and bios as the company published them. Photographs are our own copies of the ones on that record, so they do not break when the original link expires.
Against the 209 companies on file from Summer 2026. Median team 2, largest 30.
The nearest companies on file from the same batch, side by side with this one.
| Company | Batch | Sectors | Listed |
|---|---|---|---|
| Frontier Computing | Summer 2026 | Artificial Intelligence, Hard Tech, Hardware | 2026-08-31 |
| Ethos Space Resources | Summer 2026 | Hard Tech, Exascale Computing, Energy | 2026-08-23 |
| Spectre Intelligence | Summer 2026 | Biotech, Investing, Trading | 2026-08-22 |
| Edgerun | Summer 2026 | Robotics, Defense | 2026-08-21 |
| Allia Health | Summer 2026 | Artificial Intelligence, Healthcare, Mental Health | 2026-08-19 |
| Rational (this page) | Summer 2026 | Artificial Intelligence, Enterprise | 2026-07-16 |
Click a column heading to sort. Comparison is against records held here, not against every company that exists.
The full profile
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Sourced from the company's Y Combinator directory entry. Figures are read directly from the source record; names have not been matched against other people.