Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Robinhood Prediction Markets) Pick polygram.ink (preferred broker) |
90% | 10% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Go to the live market → |
Polymarket (direct) polymarket.com |
90% | 10% | 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 | 90% |
| RC Celta de Vigo O/U 0.5 | 78% |
| 2nd Half O/U 0.5 | 74% |
| O/U 1.5 | 68% |
| 1st Half O/U 0.5 | 64% |
| RC Celta de Vigo 2nd Half O/U 0.5 | 58% |
| CA Osasuna O/U 0.5 | 57% |
| RC Celta de Vigo 1st Half O/U 0.5 | 49% |
| Both Teams to Score | 47% |
| RC Celta de Vigo O/U 1.5 | 44% |
| O/U 2.5 | 41% |
| CA Osasuna 2nd Half O/U 0.5 | 38% |
| 2nd Half O/U 1.5 | 37% |
| CA Osasuna 1st Half O/U 0.5 | 30% |
| 1st Half O/U 1.5 | 27% |
| RC Celta de Vigo (-1.5) | 25% |
| Both Teams to Score in Second Half | 22% |
| O/U 3.5 | 21% |
| CA Osasuna O/U 1.5 | 21% |
| RC Celta de Vigo 2nd Half O/U 1.5 | 20% |
| RC Celta de Vigo O/U 2.5 | 18% |
| Both Teams to Score in First Half | 14% |
| 2nd Half O/U 2.5 | 14% |
| RC Celta de Vigo 1st Half O/U 1.5 | 13% |
| CA Osasuna 2nd Half O/U 1.5 | 11% |
| RC Celta de Vigo (-2.5) | 10% |
| O/U 4.5 | 9% |
| 1st Half O/U 2.5 | 8% |
| CA Osasuna (-1.5) | 6% |
| CA Osasuna O/U 2.5 | 5% |
| CA Osasuna 1st Half O/U 1.5 | 5% |
| O/U 5.5 | 3% |
| CA Osasuna (-2.5) | 1% |
Market context
RC Celta de Vigo vs. CA Osasuna - More Markets. The market is currently pricing the outcome at 25% YES, meaning crowd-implied probability sits at that level. Settlement is scheduled for 2026-08-27T18:30:00Z. Unlike a sportsbook, the price you see is set by buyers and sellers competing in a live order book — there is no house edge or bookmaker margin to fade.
Sports outcome markets resolve from official league data once the contest finishes. Pricing typically tightens through the warm-up window as line-ups, weather, and starting-pitcher data become public, then moves on goals or runs in real time.
Watch for the underlying catalysts that move this category: each official announcement, dataset release, or scheduled milestone generally produces a step change in the implied probability. Trades execute instantly on Polygon, and shares pay $1 each at resolution if your side wins.
Methodology
We read RC Celta de Vigo vs. CA Osasuna - 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
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.
- 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.
- 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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