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.

Which platform has the deepest liquidity?

Polymarket — by a wide margin. Top markets reach $50-500M volume, Kalshi ~$200M cumulative, Betfair similar. Deeper liquidity means your trade moves the quote less.

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.

Which platform is accessible globally?

Polymarket is geo-blocked in the US/UK/EU. Kalshi is US-only. Betfair and Smarkets are UK-restricted. Robinhood Prediction Markets has a different geo footprint and routes to Polymarket's order book at 0% fees.

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.

UFC Fight Night: Sedriques Dumas vs… | Robinhoodpredictionmarkets 2026

Name: UFC Fight Night: Sedriques Dumas vs. Luis Hernandez (Light Heavyweight, Main Card)
Start: 2026-09-25T22:00:14.000Z
End: 2026-09-27T03:59:59.999Z

Platform comparison

Platform	YES odds	NO odds	Fee	KYC	Settlement
Polymarket (via Robinhood Prediction Markets) Pick polygram.ink (preferred broker)	100%	0%	0% (USDC on-chain)	No-KYC up to $1,500	USDC, auto via UMA oracle	Go to the live market →
Polymarket (direct) polymarket.com	100%	0%	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
Fight won by submission?	100%
Ends before Round 2?	100%
Ends before Round 3?	100%
Hernandez in Round 1	100%
Sedriques Dumas vs. Luis Hernandez	0%
Fight to Go the Distance?	0%
Fight won by KO/TKO?	0%
Dumas to win by KO/TKO?	0%
Hernandez to win by KO/TKO?	0%
O/U 0.5 Rounds	0%
O/U 1.5 Rounds	0%
O/U 2.5 Rounds	0%
Fight won by decision?	0%
Dumas in Round 1	0%
Dumas in Round 2	0%
Dumas in Round 3	0%
Hernandez in Round 2	0%
Hernandez in Round 3	0%
Decision or Draw	0%

Market context

Live Polymarket data shows 100% YES probability for UFC Fight Night: Sedriques Dumas vs. Luis Hernandez (Light Heavyweight, Main Card). This market will resolve to "Sedriques Dumas" if Sedriques Dumas is officially declared the winner of the fight against Luis Hernandez at UFC Fight Night: Rosas Jr. vs. Barcelos, scheduled for Septemb…

Live Data & Statistics

The Polymarket order book prices Fight won by submission? at 100% for "UFC Fight Night: Sedriques Dumas vs. Luis Hernandez (Light Heavyweight, Main Card)".

Fight won by submission? 100% Other 0%

Live stats load when the match begins. Current market odds are shown above. Trading volume: $177K.

Methodology

This page compares UFC Fight Night: Sedriques Dumas vs. Luis Hernandez (Light Heavyweight, Main Card) specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. The live probability is the Polymarket mid; the comparison columns summarise each venue's fee structure, KYC, settlement currency and payment rails. Every CTA routes to Robinhood Prediction Markets, which mirrors the Polymarket order book at 0% fees.

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

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.
Which platform has the deepest liquidity?: Polymarket — by a wide margin. Top markets reach $50-500M volume, Kalshi ~$200M cumulative, Betfair similar. Deeper liquidity means your trade moves the quote less.
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.
Which platform is accessible globally?: Polymarket is geo-blocked in the US/UK/EU. Kalshi is US-only. Betfair and Smarkets are UK-restricted. Robinhood Prediction Markets has a different geo footprint and routes to Polymarket's order book at 0% fees.
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

Trade UFC Fight Night: Sedriques Dumas vs. Luis Hernandez … on Robinhood Prediction Markets

Live order book, 0% fees, USDC settlement in seconds.

Open live market →

UFC Fight Night: Sedriques Dumas vs. Luis Hernandez (Light Heavyweight, Main Card)

Platform comparison

Outcome probabilities

Market context

Live Data & Statistics

Methodology

Resolution & payout

FAQ

Trade UFC Fight Night: Sedriques Dumas vs. Luis Hernandez … on Robinhood Prediction Markets

Related live markets

Oregon vs. USC

Ole Miss vs. Florida

Texas vs. Tennessee

Texas A&M vs. LSU

Minnesota vs. Washington

Oklahoma vs. Georgia

Related Topics