Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Robinhood Prediction Markets) Pick polygram.ink (preferred broker) |
82% | 18% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Go to the live market → |
Polymarket (direct) polymarket.com |
82% | 18% | 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 0.5 | 82% |
| Nashville SC O/U 0.5 | 58% |
| New York Red Bulls O/U 0.5 | 57% |
| O/U 1.5 | 51% |
| Both Teams to Score in Second Half | 50% |
| 2nd Half O/U 0.5 | 50% |
| 2nd Half O/U 1.5 | 50% |
| 2nd Half O/U 2.5 | 50% |
| New York Red Bulls 2nd Half O/U 0.5 | 50% |
| New York Red Bulls 2nd Half O/U 1.5 | 50% |
| Nashville SC 2nd Half O/U 0.5 | 50% |
| Nashville SC 2nd Half O/U 1.5 | 50% |
| Both Teams to Score | 35% |
| O/U 2.5 | 24% |
| Nashville SC O/U 1.5 | 21% |
| New York Red Bulls O/U 1.5 | 20% |
| New York Red Bulls (-1.5) | 11% |
| Nashville SC (-1.5) | 11% |
| O/U 3.5 | 10% |
| O/U 5.5 | 10% |
| New York Red Bulls (-2.5) | 8% |
| Nashville SC O/U 2.5 | 6% |
| New York Red Bulls O/U 2.5 | 5% |
| Nashville SC (-2.5) | 4% |
| O/U 4.5 | 3% |
| Both Teams to Score in First Half | 0% |
| 1st Half O/U 0.5 | 0% |
| 1st Half O/U 1.5 | 0% |
| 1st Half O/U 2.5 | 0% |
| New York Red Bulls 1st Half O/U 0.5 | 0% |
| New York Red Bulls 1st Half O/U 1.5 | 0% |
| Nashville SC 1st Half O/U 0.5 | 0% |
| Nashville SC 1st Half O/U 1.5 | 0% |
Market context
New York Red Bulls host Nashville SC in an MLS fixture at Sports Illustrated Stadium, with kick-off listed for 7:30 pm ET on 19 August. The crowd-implied 11% yes price on the “More Markets” contract suggests traders are treating the event as a low-probability basket of ancillary outcomes rather than a broad game view, which is typical when the headline match price is already tightly framed by the main result and totals markets.
For context, an 11% contract price equates to an implied probability of roughly one in nine, so it usually needs a fairly specific catalyst to justify a move. On Polymarket, that is shown directly as a percentage; on Kalshi or exchange-style books such as Betfair and Smarkets, the same view is normally expressed through contract or decimal pricing, with fees, spread, and commission affecting the effective break-even. Access also differs: Polymarket is crypto-native and geo-restricted in several jurisdictions, while Kalshi requires US KYC and exchange venues add verification and commission frictions.
The main catalysts are late team news, starting line-ups, and any change to the match schedule or venue, because “more markets” contracts often settle off correlated in-game or prop outcomes that can be sensitive to a single omission. Nashville’s own preview on 19 August confirmed the midweek road fixture and 6:30 pm CT start, while ESPN and club listings aligned on the same night kick-off, so any last-minute adjustment would be the clearest trigger for repricing.
Methodology
We read New York Red Bulls vs. Nashville SC - More Markets 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
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.
- 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.
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