Sergey Brin vs Cai Kui: who is richer?
Sergey Brin is richer, with a net worth of $218.1 billion versus Cai Kui's $3.67 billion — a gap of $214.4 billion, or 59 times as much (as of November 7, 2026).
Sergey Brin
Source of wealth: Google
$218.1B
Made since you opened this page: $0.00
Cai Kui
Source of wealth: Real estate
$3.67B
Side-by-side
| Sergey Brin | Cai Kui | |
|---|---|---|
| Net worth | $218.1B | $3.67B |
| World rank | #4 | #1138 |
| Makes per second | $1,584 | −$12.39 |
| Makes per day | $136.9M | −$1.07M |
| Today | +$1.58B | −$40.98M |
| Source of wealth | Real estate | |
| Age | 53 | 63 |
| Country | United States | China |
Net worth by year
| Year | Sergey Brin | Cai Kui |
|---|---|---|
| 2026 | $237B | $4.6B |
| 2025 | $138B | $4.3B |
| 2024 | $110B | $4B |
| 2023 | $76B | $5.9B |
| 2022 | $107B | $8.7B |
| 2021 | $89B | $10.4B |
| 2020 | $49.1B | $6.9B |
| 2019 | $49.8B | $5.6B |
| 2018 | $47.5B | $4.6B |
| 2017 | $39.8B | $2.7B |
| 2016 | $34.4B | $2B |
| 2015 | $29.2B | $2.1B |
Frequently asked questions
Who is richer, Sergey Brin or Cai Kui?
Sergey Brin is richer, worth $218.1 billion compared with Cai Kui's $3.67 billion. The difference is $214.4 billion.
Who makes more per second, Sergey Brin or Cai Kui?
Sergey Brin makes more: about $1,584 per second versus −$12.39. Per day that's $136.9M vs −$1.07M.
How many times richer is Sergey Brin than Cai Kui?
Sergey Brin has about 59 times Cai Kui's net worth.