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.

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.

Which platform supports Klarna/SOFORT?

Directly: none. Polymarket accepts only USDC on Polygon. Robinhood Prediction Markets offers a fiat on-ramp via Klarna or SOFORT (DE/AT/CH) and converts internally to USDC for the Polymarket order book. T+1 processing.

UFC Fight Night: Ismael Bonfim vs. … | Robinhoodpredictionmarkets 2026

Name: UFC Fight Night: Ismael Bonfim vs. Axel Sola (Lightweight, Prelims)
Start: 2026-07-11T22:00:52.000Z
End: 2026-07-26T03:59:59.999Z

Platform comparison

Platform	YES odds	NO odds	Fee	KYC	Settlement
Polymarket (via Robinhood Prediction Markets) Pick polygram.ink (preferred broker)	50%	50%	0% (USDC on-chain)	No-KYC up to $1,500	USDC, auto via UMA oracle	Go to the live market →
Polymarket (direct) polymarket.com	50%	50%	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 KO/TKO?	50%
Bonfim to win by KO/TKO?	50%
Sola to win by KO/TKO?	50%
Fight won by submission?	50%
O/U 0.5 Rounds	50%
O/U 1.5 Rounds	50%
Fight to Go the Distance?	1%
O/U 2.5 Rounds	1%
Ismael Bonfim vs. Axel Sola	0%

Market context

Based on real-money crowd forecasting, ufc fight night: ismael bonfim vs. axel sola (lightweight, prelims) stands at 50% likelihood according to current market consensus. This market will resolve to "Ismael Bonfim" if Ismael Bonfim is officially declared the winner of the fight against Axel Sola at UFC Fight Night: Ankalaev vs. Rountree Jr., schedul…

Live Data & Statistics

The Polymarket order book prices Fight won by KO/TKO? at 50% for "UFC Fight Night: Ismael Bonfim vs. Axel Sola (Lightweight, Prelims)".

Fight won by KO/TKO? 50% Other 50%

Live stats load when the match begins. Current market odds are shown above. Trading volume: $780K.

Methodology

We read UFC Fight Night: Ismael Bonfim vs. Axel Sola (Lightweight, Prelims) 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.
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.
Which platform supports Klarna/SOFORT?: Directly: none. Polymarket accepts only USDC on Polygon. Robinhood Prediction Markets offers a fiat on-ramp via Klarna or SOFORT (DE/AT/CH) and converts internally to USDC for the Polymarket order book. T+1 processing.

Alex ChenPrediction Market Analystand

Jordan LeeSports Prediction Reporter

Trade UFC Fight Night: Ismael Bonfim vs. Axel Sola (Lightw… on Robinhood Prediction Markets

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UFC Fight Night: Ismael Bonfim vs. Axel Sola (Lightweight, Prelims)

Platform comparison

Outcome probabilities

Market context

Live Data & Statistics

Methodology

Resolution & payout

FAQ

Trade UFC Fight Night: Ismael Bonfim vs. Axel Sola (Lightw… on Robinhood Prediction Markets

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