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 |
|---|---|
| Map 1 Winner | 100% |
| Match Winner | 100% |
| O/U 2.5 Games | 100% |
| Map 1 Total Rounds: Over/Under 21.5 | 100% |
| Map 2 Total Rounds: Over/Under 21.5 | 100% |
| Map 3 Rounds Handicap: UNO MILLE (-6.5) vs ODDIK Academy (+6.5) | 100% |
| Map 2 Winner | 0% |
| Map Handicap: UNO (-1.5) vs ODDIK Academy (+1.5) | 0% |
| Map 1 Rounds Handicap: UNO MILLE (-3.5) vs ODDIK Academy (+3.5) | 0% |
| Map 1 Rounds Handicap: UNO MILLE (-6.5) vs ODDIK Academy (+6.5) | 0% |
| Map 2 Rounds Handicap: UNO MILLE (-6.5) vs ODDIK Academy (+6.5) | 0% |
| Map 3 Total Rounds: Over/Under 21.5 | 0% |
Market context
UNO MILLE’s BO3 against ODDIK Academy in the BetBoom Storm Group Stage has already been played in available match trackers, which is important because a market showing a 100% YES crowd price can still be pointing to a result that is not yet universally reflected across books or platforms. On Polymarket, the same fixture is listed with UNO MILLE trading around 71¢ and ODDIK Academy around 30¢, a direct probability-style display that differs from Betfair or Smarkets, where traders usually work from decimal odds and then back out the market’s implied chance after accounting for commission or premium charges.[5]
The main comparison point is how much each venue bakes into the displayed price. Polymarket shows a raw implied probability, while traditional exchange markets such as Betfair and Smarkets typically quote decimal prices and charge fees on net winnings rather than embedding them in a binary YES/NO quote, so the headline figure is less directly comparable across platforms. Public tournament listings also show this was scheduled for 5 August at 17:00 UTC, and team pages elsewhere recorded it as a Round 2 or group-stage BO3, which is the kind of match structure that can move sharply if one side is forced into a line-up change or if the draw order changes on the day.[1][2][7][9]
For traders, the key catalysts are basic but decisive: official bracket updates, whether the map veto and server start happen on schedule, and whether any late roster or substitution notice appears before settlement. The market contract itself matters too, because if the match is cancelled, tied, or delayed beyond seven days without a winner, settlement moves to 50-50 rather than a side being paid outright. KYC and access also diverge: Polymarket and betting exchanges do not offer identical user reach, so the same 100% crowd signal can reflect a different participant base even before fees are considered.[5]
Methodology
This page compares Counter-Strike: UNO MILLE vs ODDIK Academy (BO3) - BetBoom Storm Group Stage 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
Polymarket settles via UMA Optimistic Oracle on Polygon. A proposer posts the outcome with a bond, the two-hour window runs, then the smart contract pays USDC.
Kalshi settles USD through the CFTC-regulated clearinghouse — the cleanest variant, with heavier KYC. Betfair Exchange settles in account currency (GBP/EUR), net of 2-5% commission. Smarkets follows the same model as Betfair with a lower default 2% commission.
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.
- 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.
- 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.
- 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.
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