Polymarket vs Kalshi — which is better?

Depends on your location. Kalshi is CFTC-regulated, US-only with full KYC. Polymarket is global, on-chain, no KYC up to $1,500. Polymarket has ~10x higher liquidity but higher regulatory risk.

What does Polymarket cost vs Kalshi?

Polymarket: 0% fees, only Polygon network costs (~$0.01/trade). Kalshi: up to 7% per trade plus spread. For high-frequency traders, Polymarket is dramatically cheaper.

Is Betfair a Polymarket alternative?

Only partially. Betfair Exchange is UK-focused with a sports-betting emphasis; they have politics markets but with thinner liquidity than Polymarket. Settlement in GBP/EUR, 2-5% commission on winnings.

What about Smarkets as an alternative?

Smarkets is a UK betting exchange with a lower default commission (2%) than Betfair. Liquidity on political markets is below Polymarket, comparable to Kalshi. Geo-blocked in many jurisdictions.

Are all these platforms regulated?

No. Kalshi is CFTC-regulated (US). Betfair and Smarkets are UK Gambling Commission licensed. Polymarket operates without explicit regulation — a different risk profile than a regulated sportsbook.

Washington vs. Purdue | Robinhoodpredictionmarkets — market: 85% Yes

Name: Washington vs. Purdue
Start: 2026-10-06T00:12:06.000Z
End: 2026-10-17T00:00:00.000Z

Platform comparison

Platform	YES odds	NO odds	Fee	KYC	Settlement
Polymarket (via Robinhood Prediction Markets) Pick polygram.ink (preferred broker)	85%	15%	0% (USDC on-chain)	No-KYC up to $1,500	USDC, auto via UMA oracle	Go to the live market →
Polymarket (direct) polymarket.com	85%	15%	0%	Geo-blocked in US/UK/EU	USDC, on-chain	Go to the live market →
Kalshi kalshi.com	—	—	Up to 7% per trade	US-only, KYC required	USD	Go to the live market →
Betfair Exchange betfair.com	—	—	2-5% commission	Full KYC from first trade	GBP / EUR	Go to the live market →
Manifold Markets manifold.markets	—	—	Play-money (mana)	None — play-money	Mana (no cash-out)	Go to the live market →

Outcome probabilities

Current market-implied probability for each outcome, from the live order book.

Outcome	Probability
O/U 35.5	85%
O/U 37.5	80%
2Q O/U 7.5	80%
O/U 39.5	77%
O/U 41.5	72%
4Q O/U 7.5	71%
O/U 43.5	67%
2Q O/U 10.5	66%
1H O/U 21.5	62%
Purdue O/U 23.5	62%
2H Spread -1.5	61%
O/U 45.5	60%
Washington O/U 20.5	60%
Spread -0.5	59%
3Q O/U 7.5	59%
4Q O/U 10.5	59%
Spread -1.5	57%
O/U 47.5	57%
Washington 1H O/U 11.5	57%
Spread -2.5	56%
1Q O/U 7.5	56%
2Q O/U 13.5	56%
1H Spread -0.5	54%
O/U 49.5	52%
1H Spread -1.5	52%
2H O/U 24.5	51%
4Q O/U 13.5	51%
2H Spread -0.5	51%
1H O/U 33.5	50%
2H O/U 21.5	50%
2H O/U 33.5	50%
Washington O/U 23.5	50%
Washington O/U 26.5	50%
Washington O/U 29.5	50%
Washington O/U 32.5	50%
Purdue O/U 29.5	50%
Purdue 1H O/U 12.5	50%
Washington 2H O/U 11.5	50%
Washington 2H O/U 15.5	50%
Purdue 2H O/U 12.5	50%
Both Teams to Score a Touchdown	50%
Both Teams to Score a Touchdown - 2H	50%
Both Teams to Score a Touchdown - 1H	50%
Both Teams to Score a Touchdown - Q1	50%
Both Teams to Score a Touchdown - Q2	50%
Both Teams to Score a Touchdown - Q3	50%
Both Teams to Score a Touchdown - Q4	50%
Kickoff or Punt Return Touchdown	50%
Pick-Six Scored	50%
Washington vs. Purdue: Total Touchdowns O/U 5.5	50%
Purdue Total Passing Touchdowns: O/U 0.5	50%
Washington Total Passing Touchdowns: O/U 0.5	50%
Washington Total Passing Touchdowns: O/U 1.5	50%
Washington Total Passing Yards: O/U 200.5	50%
Washington Total Passing Yards: O/U 225.5	50%
Washington Total Passing Yards: O/U 250.5	50%
Purdue Total Passing Yards: O/U 200.5	50%
Washington Total Rushing Yards: O/U 125.5	50%
Washington Total Rushing Yards: O/U 150.5	50%
Washington Total Rushing Yards: O/U 175.5	50%
Purdue Total Rushing Yards: O/U 125.5	50%
Purdue Total Rushing Yards: O/U 175.5	50%
Washington Total Scrimmage Yards: O/U 375.5	50%
Washington Total Scrimmage Yards: O/U 400.5	50%
Purdue Total Rushing Yards: O/U 150.5	50%
Purdue Total Scrimmage Yards: O/U 350.5	50%
Washington Total Scrimmage Yards: O/U 350.5	50%
Purdue Total Scrimmage Yards: O/U 375.5	50%
Purdue Total Scrimmage Yards: O/U 400.5	50%
Washington 40+ Yard Field Goals Made: O/U 0.5	50%
Washington 40+ Yard Field Goals Made: O/U 1.5	50%
Purdue 40+ Yard Field Goals Made: O/U 1.5	50%
Washington Field Goals Made: O/U 0.5	50%
Purdue 40+ Yard Field Goals Made: O/U 0.5	50%
Washington Field Goals Made: O/U 2.5	50%
Washington Field Goals Made: O/U 1.5	50%
Purdue Field Goals Made: O/U 0.5	50%
Purdue Field Goals Made: O/U 1.5	50%
Purdue Field Goals Made: O/U 2.5	50%
Purdue Total Receptions: O/U 14.5	50%
Washington Total Receptions: O/U 14.5	50%
Washington Total Receptions: O/U 19.5	50%
Purdue Total Receptions: O/U 19.5	50%
Washington Total Receptions: O/U 24.5	50%
Purdue Total Receptions: O/U 24.5	50%
Washington Total First Downs: O/U 19.5	50%
Washington Total First Downs: O/U 23.5	50%
Washington Total First Downs: O/U 21.5	50%
Purdue Total First Downs: O/U 19.5	50%
Purdue Total First Downs: O/U 21.5	50%
Purdue Total First Downs: O/U 23.5	50%
Washington vs. Purdue: Total 4th Down Conversions O/U 0.5	50%
Washington vs. Purdue: Total Successful Two-Point Conversions O/U 0.5	50%
1H Spread -2.5	50%
1H Spread -5.5	50%
2H Spread -1.5	50%
2H Spread -5.5	50%
1Q Spread -1.5	50%
1Q Spread -0.5	50%
2Q Spread -1.5	50%
2Q Spread -5.5	50%
3Q Spread -1.5	50%
3Q Spread -5.5	50%
4Q Spread -1.5	50%
4Q Spread -5.5	50%
2H Moneyline	50%
2Q Moneyline	50%
3Q Moneyline	50%
4Q Moneyline	50%
Both Teams to Score Points - Q2	49%
2Q Spread -0.5	49%
1H O/U 24.5	48%
Washington 1H O/U 13.5	48%
Spread -3.5	47%
Purdue O/U 26.5	47%
3Q Spread -0.5	47%
4Q Spread -0.5	47%
2H Spread -2.5	46%
2Q Spread -2.5	46%
O/U 51.5	45%
3Q O/U 10.5	45%
Purdue 2H O/U 14.5	45%
Both Teams to Score Points - Q4	45%
Washington Total Passing Touchdowns: O/U 2.5	45%
1Q Spread -0.5	45%
Spread -4.5	44%
1Q O/U 10.5	43%
2Q O/U 16.5	43%
Purdue 1H O/U 14.5	43%
Purdue 2H O/U 16.5	43%
Both Teams to Score Points - Q3	43%
Purdue Total Passing Yards: O/U 225.5	43%
1H Spread -3.5	43%
1H Moneyline	43%
Spread -5.5	42%
Both Teams to Score Points - Q1	42%
2H Spread -3.5	42%
4Q Spread -1.5	42%
Washington vs. Purdue	41%
Spread -6.5	41%
Washington vs. Purdue: Total Touchdowns O/U 6.5	41%
3Q Spread -2.5	41%
4Q Spread -2.5	41%
Washington O/U 2.5	41%
1Q Moneyline	41%
Spread -0.5	40%
O/U 53.5	40%
1H O/U 27.5	40%
Washington 2H O/U 13.5	40%
Purdue Total Passing Touchdowns: O/U 1.5	40%
Purdue Total Passing Yards: O/U 250.5	40%
Washington vs. Purdue: Total Defensive/Special Teams Touchdowns O/U 0.5	40%
2H O/U 27.5	39%
3Q O/U 13.5	39%
Spread -1.5	38%
1Q O/U 13.5	38%
Washington vs. Purdue: Total Touchdowns O/U 7.5	38%
Purdue Total Passing Touchdowns: O/U 2.5	38%
1H Spread -1.5	38%
1Q Spread -1.5	38%
2Q Spread -1.5	38%
2Q Spread -3.5	38%
Purdue O/U 3.5	38%
Game Goes to Overtime	37%
3Q Spread -1.5	37%
Spread -2.5	36%
Purdue 1H O/U 16.5	36%
1Q Spread -3.5	36%
4Q O/U 16.5	35%
Purdue O/U 32.5	35%
Purdue O/U 35.5	35%
Spread -7.5	34%
O/U 55.5	34%
3Q Spread -3.5	34%
4Q Spread -3.5	34%
O/U 57.5	32%
1H O/U 30.5	32%
Spread -3.5	31%
Spread -8.5	31%
2Q O/U 19.5	31%
Washington 1H O/U 15.5	30%
2H O/U 30.5	29%
Spread -4.5	28%
Spread -10.5	27%
O/U 59.5	27%
Spread -5.5	26%
1Q Spread -3.5	26%
Spread -6.5	25%
4Q O/U 19.5	25%
Spread -13.5	24%
O/U 61.5	23%
3Q O/U 16.5	23%
O/U 63.5	21%
Spread -8.5	20%
Spread -7.5	20%
Spread -14.5	20%
1Q O/U 16.5	19%
Spread -16.5	18%
Spread -10.5	16%
Spread -17.5	16%
O/U 65.5	16%
1Q O/U 19.5	16%
3Q O/U 19.5	16%
O/U 67.5	15%
Spread -13.5	14%
O/U 69.5	13%
Spread -20.5	11%
Spread -14.5	10%
Spread -16.5	9%
O/U 71.5	9%
Spread -20.5	8%
O/U 73.5	8%
Spread -17.5	7%
O/U 75.5	6%

Market context

Washington vs. Purdue — current market-implied probability: 85%. In the upcoming college football game between Washington and Purdue, scheduled for October 16 at 8:00PM ET: This market will resolve to "Washington" if Washington win the game. This market will resolv…

Live Data & Statistics

The Polymarket order book prices O/U 35.5 at 85% for "Washington vs. Purdue".

O/U 35.5 85% Other 15%

Live stats load when the match begins. Current market odds are shown above. Trading volume: $163K.

Methodology

We read Washington vs. Purdue from four platform perspectives: Polymarket (on-chain CLOB), Kalshi (CFTC-regulated exchange), Betfair Exchange (sports book exchange), Smarkets (peer-to-peer betting exchange). Polymarket's live mid is the canonical probability; the side-by-side columns benchmark fees, KYC, settlement currency and deposit rails so you can choose the venue that fits your jurisdiction and trade size.

Resolution & payout

Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). On-chain settlement clears in minutes — the fastest payout path of the four.

FAQ

Polymarket vs Kalshi — which is better?: Depends on your location. Kalshi is CFTC-regulated, US-only with full KYC. Polymarket is global, on-chain, no KYC up to $1,500. Polymarket has ~10x higher liquidity but higher regulatory risk.
What does Polymarket cost vs Kalshi?: Polymarket: 0% fees, only Polygon network costs (~$0.01/trade). Kalshi: up to 7% per trade plus spread. For high-frequency traders, Polymarket is dramatically cheaper.
Is Betfair a Polymarket alternative?: Only partially. Betfair Exchange is UK-focused with a sports-betting emphasis; they have politics markets but with thinner liquidity than Polymarket. Settlement in GBP/EUR, 2-5% commission on winnings.
What about Smarkets as an alternative?: Smarkets is a UK betting exchange with a lower default commission (2%) than Betfair. Liquidity on political markets is below Polymarket, comparable to Kalshi. Geo-blocked in many jurisdictions.
Are all these platforms regulated?: No. Kalshi is CFTC-regulated (US). Betfair and Smarkets are UK Gambling Commission licensed. Polymarket operates without explicit regulation — a different risk profile than a regulated sportsbook.

Alex ChenPrediction Market Analystand

Jordan LeeSports Prediction Reporter

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Washington vs. Purdue

Platform comparison

Outcome probabilities

Market context

Live Data & Statistics

Methodology

Resolution & payout

FAQ

Trade Washington vs. Purdue on Robinhood Prediction Markets

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