| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Breaststroke | 1:51.29 | MAC Rising Star #2 | 2025-05-30 |
| 100m Freestyle | 1:28.14 | MAC Rising Star #2 | 2025-05-30 |
| 100m Freestyle | 1:15.83 | 2026 Joanne Malar Invitational | 2026-01-16 |
| 100m IM | 1:24.66 | Pan Am Open 2026 | 2026-02-21 |
| 200m Freestyle | 3:18.65 | MAC Rising Star #2 | 2025-05-30 |
| 200m IM | 3:05.83 | 2026 Joanne Malar Invitational | 2026-01-16 |
| 50m Backstroke | 42.44 | Pan Am Open 2026 | 2026-02-21 |
| 50m Breaststroke | 44.69 | Pan Am Open 2026 | 2026-02-21 |
| 50m Butterfly | 40.87 | 2025 Alex Baumann Invitational | 2025-11-21 |
| 50m Freestyle | 39.86 | MAC Rising Star #2 | 2025-05-30 |
Bian, Kai's top personal bests include 100m Breaststroke (1:51.29), 100m Freestyle (1:28.14), 100m Freestyle (1:15.83), 100m IM (1:24.66), 200m Freestyle (3:18.65).
Bian, Kai swims for New Stars Swimming Club.
Bian, Kai has competed in 4 meets.