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.

Dota 2: Aurora vs Team Yandex (BO3)… | Robinhoodpredictionmarkets 2026

Name: Dota 2: Aurora vs Team Yandex (BO3) - The International Group Stage
Start: 2026-08-14T07:09:34.000Z
End: 2026-08-14T16:20:00.000Z

Platform comparison

Platform	YES odds	NO odds	Fee	KYC	Settlement
Polymarket (via Robinhood Prediction Markets) Pick polygram.ink (preferred broker)	56%	44%	0% (USDC on-chain)	No-KYC up to $1,500	USDC, auto via UMA oracle	Go to the live market →
Polymarket (direct) polymarket.com	56%	44%	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 2.5 Games	56%
Ends in Daytime	50%
Both Teams Beat Roshan	50%
Both Teams Destroy Barracks	50%
Any Player Ultra Kill	50%
Ends in Daytime	50%
Both Teams Beat Roshan	50%
Both Teams Destroy Barracks	50%
Any Player Ultra Kill	50%
Any Player Rampage	50%
Ends in Daytime	50%
Both Teams Beat Roshan	50%
Both Teams Destroy Barracks	50%
Any Player Ultra Kill	50%
Any Player Rampage	50%
First Blood in Game 2?	50%
First Blood in Game 1?	50%
Total Kills Over/Under 50.5 in Game 2?	50%
Total Kills Over/Under 50.5 in Game 1?	50%
Total Kills Over/Under 55.5 in Game 1?	50%
Game 2 Winner	44%
Game Handicap: TY (-1.5) vs Aurora (+1.5)	44%
Game 1 Winner	39%
Match Winner	37%
Any Player Rampage	25%

Market context

Based on real-money crowd forecasting, dota 2: aurora vs team yandex (bo3) - the international group stage stands at 56% likelihood according to current market consensus. This market refers to the Dota 2 Round 3 match between Aurora and Team Yandex in the The International Group Stage, initially scheduled for August 14, 2026 at 4:00 AM ET. This mar…

Methodology

We read Dota 2: Aurora vs Team Yandex (BO3) - The International Group 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.

Alex ChenPrediction Market Analystand

Jordan LeeSports Prediction Reporter

Trade Dota 2: Aurora vs Team Yandex (BO3) - The Internatio… on Robinhood Prediction Markets

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Dota 2: Aurora vs Team Yandex (BO3) - The International Group Stage

Platform comparison

Outcome probabilities

Market context

Methodology

Resolution & payout

FAQ

Trade Dota 2: Aurora vs Team Yandex (BO3) - The Internatio… on Robinhood Prediction Markets

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