Combined depth · both venues
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Max Verstappen 43.3%
Next is Andrea Kimi Antonelli at 33.3%. Polymarket and Kalshi agree within 1 point on each matched outcome.
Consensus blends each venue’s last price, weighted by how much has traded there. Best Yes price is the cheapest ask across venues, and the payout is what a winning $100 stake returns before fees. Open a row for each venue’s contract name, bid and ask, and how closely their rules match.
Prices come from our regular polls of each venue. Ages are as of when this page was built.

Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Buying on Kalshi at 5¢ and selling on Polymarket at 44¢ nets 3900 bps before fees.


Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Buying on Polymarket at 10¢ and selling on Kalshi at 38¢ nets 2800 bps before fees.

Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Buying on Polymarket at 9¢ and selling on Kalshi at 35¢ nets 2600 bps before fees.

Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Buying on Polymarket at 8¢ and selling on Kalshi at 32¢ nets 2400 bps before fees.

Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Buying on Polymarket at 9¢ and selling on Kalshi at 33¢ nets 2400 bps before fees.

Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Buying on Polymarket at 3.4¢ and selling on Kalshi at 16¢ nets 1260 bps before fees.

Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Buying on Polymarket at 4.9¢ and selling on Kalshi at 14¢ nets 910 bps before fees.

Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
No arbitrage: the best bid elsewhere is 0.1¢, at or below the cheapest ask of 1¢.

Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Buying on Polymarket at 1.2¢ and selling on Kalshi at 4¢ nets 280 bps before fees.

Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
No arbitrage: the best bid elsewhere is 0.1¢, at or below the cheapest ask of 1¢.

Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Buying on Polymarket at 2.8¢ and selling on Kalshi at 4¢ nets 120 bps before fees.

Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Buying on Polymarket at 3¢ and selling on Kalshi at 4¢ nets 100 bps before fees.

Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
No arbitrage: the best bid elsewhere is 0.1¢, at or below the cheapest ask of 1¢.

Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Buying on Polymarket at 2.9¢ and selling on Kalshi at 4¢ nets 110 bps before fees.

Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Buying on Polymarket at 1.1¢ and selling on Kalshi at 4¢ nets 290 bps before fees.

Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Buying on Polymarket at 1.1¢ and selling on Kalshi at 4¢ nets 290 bps before fees.

Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
No arbitrage: the best bid elsewhere is 3¢, at or below the cheapest ask of 3¢.

Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
No arbitrage: the best bid elsewhere is 0.1¢, at or below the cheapest ask of 1¢.

Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
No arbitrage: the best bid elsewhere is 0.1¢, at or below the cheapest ask of 1¢.

Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
No arbitrage: the best bid elsewhere is 0.1¢, at or below the cheapest ask of 1¢.

Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
No arbitrage: the best bid elsewhere is 0.1¢, at or below the cheapest ask of 1¢.

Possible arbitrage before fees: buy Max Verstappen on Kalshi at 5¢, sell on Polymarket at 44¢ (3900 bps). Check the rules below before trading. See all live spreads
Summarized from each venue’s published rules; the venue’s own rules page is the final word.
The top 3 outcomes on both venues, with the consensus between them. Hover for exact values.
What it costs to buy Yes, what you would get selling it, and the last trade on each exchange, updating as orders change. Hover a status for timing details.
Each venue’s resting orders for the selected outcome’s Yes contract, side by side. Top of book streams live; depth refreshes every 15 seconds.
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Enter a stake to see where it buys the most after fees, using each venue’s live order book.
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Buys at the asks resting now (taker orders), cheapest after fees first, from order-book snapshots up to 15 seconds old. Fees: Kalshi 0.07 × price × (1 − price) per share, rounded up to the cent; Polymarket 0.05 × price × (1 − price) per share (sports rate). Fee calculator. Estimates only, not advice.
Live prediction market odds for "United States Grand Prix: Driver Winner". Max Verstappen leads at 43.3%. Next is Andrea Kimi Antonelli at 33.3%. $159K has traded across 24 outcomes on Kalshi and Polymarket. The market is expected to resolve by Nov 1, 2026.
This is a polymarket on the winner of the 2026 F1 United States Grand Prix, scheduled for Oct 25, 2026. If the 2026 F1 United States Grand Prix is canceled or rescheduled to a date after Nov 1, 2026, this market will resolve to “Other.” This market will resolve in favor of the driver who is officially listed in first place in the Final Classification published by the FIA following the conclusion of the race. The Final Classification is typically released 30-60 minutes after the race ends and includes any applied time penalties and official adjustments. Disqualifications or changes made after the publication of the Final Classification will not affect market resolution. The timing of the podium ceremony does not determine the result for this market — only the FIA's published classification will be used to resolve this market. The resolution source will be the official Formula 1 website and a consensus of credible sports news reporting.
It is the price of a Yes contract that pays $1 if the outcome happens. A 14¢ price means traders put the chance near 14%. Where two venues list the same outcome, we blend their last prices, weighting the venue with more trading volume more heavily (neither counts for less than a quarter). When only one outcome can win, each venue’s prices add up to a little over 100% (its margin); the fair chance removes that margin so the outcomes add up to exactly 100%.
A Yes contract pays $1 if it wins, so at the best ask a $100 stake buys 100 ÷ ask contracts. At 18¢ that is about 555 contracts, paying $556 (5.56x) if Yes happens. Venue fees and price slippage on larger orders are not included.
Each venue has its own traders, fees and order book. Contracts can also settle on slightly different terms, which is why each row lists how closely the rules match.
Only when you can buy Yes on one venue below what someone pays for Yes on the other, after fees, and both contracts settle the same way. We show the executable bid and ask so you can check.
Venue prices refresh every few minutes, and the order book and live quotes stream continuously. Each venue’s card shows when we last observed it.