Compare two names
Caio and Kai side by side: Caio peaked in 2023 and Kai in 2022; in 2025 they were given to 35 and 4,002 babies.
Caio and Kai, year by year
Girls and boys together; Caio solid, Kai dashed.
| Caio | Kai | |
|---|---|---|
| Births 2025 | 35 | 4,002 |
| Rank 2025 | #3,321 among boys’ names | #93 among boys’ names |
| Recorded since 1880 | 722 | 78,710 |
| Peak year | 2023 | 2022 |
| Girls | 0% | 11% |
| Alive, estimated | 713 | 77,700 |
| Median age | 13 | 9 |
Both names: SSA national file, published May 8, 2026, and SSA’s cohort life tables.