Polymarket$2.32BOIOpen interest: sum of pool liquidity across all active markets, reported by the Polymarket API.
Kalshi$350.67MOIOpen interest: total contracts outstanding across all active markets, reported by the Kalshi API.
Limitless$18.48MOIOpen interest: estimated from total volume traded (USDC). Limitless does not report a separate OI metric.Compare F1 Drivers' Championship prediction market odds side by side across Polymarket, Kalshi. Platforms show similar odds, with an average spread of just 1.1pp. Close agreement often signals strong market consensus. With $1.79M in combined trading volume across 22 outcomes, this is one of the most actively traded cross-platform prediction markets.
Lewis HamiltonPolymarketKalshiCost: 96¢ per pair → pays $1 at resolution. Gross spread 4.1pp before fees.
View all arbs| Outcome | Polymarket | Kalshi | Spread |
|---|---|---|---|
George Russell | 60%+2.0 | 59%+1.0 | 0.5pp spread |
A Andrea Kimi Antonelli | 18%+0.8 |
| 3.4pp spread |
Lewis Hamilton | 5%-1.8 | 9%+2.0 | 4.1pp spread |
Charles Leclerc | 5%+0.5 | 7%±0 | 2.0pp spread |
Max Verstappen | 5%— | 7%+2.0 | 2.5pp spread |
Lando Norris | 2%— | 2%±0 | - |
Oscar Piastri | 1%-1.0 | 2%±0 | 0.7pp spread |
Valtteri Bottas | 0%— | 1%±0 | 0.7pp spread |
Oliver Bearman | 0%— | 1%±0 | 0.7pp spread |
Arvid Lindblad | 0%— | 1%±0 | 0.7pp spread |
Gabriel Bortoleto | 0%— | 1%±0 | 0.7pp spread |
Fernando Alonso | 0%±0 | 1%±0 | 0.7pp spread |
Lance Stroll | 0%— | 1%±0 | 0.7pp spread |
Sergio Pérez | 0%— | 1%±0 | 0.7pp spread |
Alexander Albon | 0%— | 1%±0 | 0.7pp spread |
Pierre Gasly | 0%— | 1%±0 | 0.7pp spread |
Isack Hadjar | 0%±0 | 1%±0 | 0.7pp spread |
Esteban Ocon | 0%— | 1%±0 | 0.7pp spread |
Liam Lawson | 0%— | 1%±0 | 0.8pp spread |
Nico Hülkenberg | 0%— | 1%±0 | 0.8pp spread |
Franco Colapinto | 0%±0 | 1%±0 | 0.8pp spread |
Carlos Sainz Jr. | 0%— | 1%±0 | 0.8pp spread |
