Kaizen vs Kai
Side-by-side comparison of Kaizen and Kai - popularity rank, total births, peak decade, and historical trends from Social Security Administration data.
Which name is more popular?
| Metric | Kaizen | Kai |
| Current Rank | #503 | #76 |
| Total Births (all years) | 3,039 | 70,232 |
| Peak Year | 2025 | 2022 |
| Peak Year Births | 895 | 5,374 |
| Peak Decade | 2020s | 2020s |
| Gender | Boy | Boy |
| First Recorded Year | 2004 | 1926 |
Births by Decade
| Decade | Kaizen | Kai |
| 1920s | - | 6 |
| 1930s | - | 6 |
| 1940s | - | 10 |
| 1950s | - | 148 |
| 1960s | - | 341 |
| 1970s | - | 592 |
| 1980s | - | 958 |
| 1990s | - | 2,640 |
| 2000s | 66 | 12,620 |
| 2010s | 465 | 25,984 |
| 2020s | 2,508 | 26,927 |
Recent Annual Births (2014–present)
| Year | Kaizen | Kai |
| 2014 | 42 | 2,411 |
| 2015 | 56 | 2,852 |
| 2016 | 51 | 2,895 |
| 2017 | 63 | 3,158 |
| 2018 | 78 | 3,463 |
| 2019 | 81 | 3,744 |
| 2020 | 103 | 3,867 |
| 2021 | 158 | 4,641 |
| 2022 | 257 | 5,374 |
| 2023 | 487 | 4,976 |
| 2024 | 608 | 4,301 |
| 2025 | 895 | 3,768 |