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.

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.

LoL: CTBC Flying Oyster vs Deep Cross Gamin…

Name: LoL: CTBC Flying Oyster vs Deep Cross Gaming (BO3) - LCP Swiss Stage
Start: 2026-07-23T07:53:05.248Z
End: 2026-07-26T17:30:00.000Z

Platform comparison

Platform	YES odds	NO odds	Fee	KYC	Settlement
Polymarket (via Kalshi Alternative UK) Pick polygram.ink (preferred broker)	100%	0%	0% (USDC on-chain)	No-KYC up to $1,500	USDC, auto via UMA oracle	Trade this market →
Polymarket (direct) polymarket.com	100%	0%	0%	Geo-blocked in US/UK/EU	USDC, on-chain	Trade this market →
Kalshi kalshi.com	—	—	Up to 7% per trade	US-only, KYC required	USD	Trade this market →
Betfair Exchange betfair.com	—	—	2-5% commission	Full KYC from first trade	GBP / EUR	Trade this market →
Manifold Markets manifold.markets	—	—	Play-money (mana)	None — play-money	Mana (no cash-out)	Trade this market →

Outcome probabilities

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

Outcome	Probability
Game 1 Winner	100%
Match Winner	64%
O/U 2.5 Games	56%
Both Teams Slay a Dragon	51%
Any Player Penta Kill	51%
First Blood in Game 1?	51%
Both Teams Slay Baron Nashor	50%
Any Player Quadra Kill	50%
Any Player Penta Kill	50%
Odd/Even Total Kills	50%
Both Teams Slay Baron Nashor	50%
Both Teams Slay a Dragon	50%
Both Teams Destroy Inhibitors	50%
Any Player Quadra Kill	50%
Any Player Penta Kill	50%
Odd/Even Total Kills	50%
Both Teams Slay Baron Nashor	50%
Both Teams Slay a Dragon	50%
Both Teams Destroy Inhibitors	50%
Any Player Quadra Kill	50%
Odd/Even Total Kills	50%
First Blood in Game 2?	50%
Both Teams Destroy Inhibitors	49%
Game 2 Winner	44%
Game Handicap: DCG (-1.5) vs CTBC Flying Oyster (+1.5)	0%

Market context

Based on real-money crowd forecasting, lol: ctbc flying oyster vs deep cross gaming (bo3) - lcp swiss stage stands at 100% likelihood according to current market consensus. This market refers to the LoL Round 1 match between CTBC Flying Oyster and Deep Cross Gaming in the LCP Swiss Stage, initially scheduled for July 26 at 7:30AM ET. This market will…

Methodology

We read LoL: CTBC Flying Oyster vs Deep Cross Gaming (BO3) - LCP Swiss Stage 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

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.
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.

Emma RobertsFinancial Journalistand

Sarah MitchellPolitical Markets Writer

Trade LoL: CTBC Flying Oyster vs Deep Cross Gaming (BO3) -… on Kalshi Alternative UK

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LoL: CTBC Flying Oyster vs Deep Cross Gaming (BO3) - LCP Swiss Stage

Platform comparison

Outcome probabilities

Market context

Methodology

Resolution & payout

FAQ

Trade LoL: CTBC Flying Oyster vs Deep Cross Gaming (BO3) -… on Kalshi Alternative UK

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