| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:10.38 | Hall of Fame | 2025-10-18 |
| 100m Breaststroke | 1:13.41 | 2025 Age Group International SC | 2025-11-27 |
| 100m Butterfly | 1:02.33 | 2026 Central Region Div 1 SC Championships | 2026-02-06 |
| 100m Freestyle | 1:00.11 | 2026 Central Region Div 1 SC Championships | 2026-02-06 |
| 200m Breaststroke | 2:39.44 | 2025 Age Group International SC | 2025-11-27 |
| 200m Butterfly | 2:24.07 | 2026 Central Region Div 1 SC Championships | 2026-02-06 |
| 200m IM | 2:21.50 | 2025 Age Group International SC | 2025-11-27 |
| 400m Freestyle | 4:45.02 | Hall of Fame | 2025-10-18 |
| 400m IM | 5:06.52 | 2025 Age Group International SC | 2025-11-27 |
| 50m Breaststroke | 33.00 | 2026 Central Region Div 1 SC Championships | 2026-02-06 |
| 50m Butterfly | 28.54 | 2026 Central Region Div 1 SC Championships | 2026-02-06 |
Wei, Benjamin's top personal bests include 100m Backstroke (1:10.38), 100m Breaststroke (1:13.41), 100m Butterfly (1:02.33), 100m Freestyle (1:00.11), 200m Breaststroke (2:39.44).
Wei, Benjamin swims for Etobicoke Swim Club.
Wei, Benjamin has competed in 10 meets.