Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Alternative) Pick polygram.ink (preferred broker) |
96% | 4% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open the market → |
Polymarket (direct) polymarket.com |
96% | 4% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open the market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open the market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open the market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open the market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| O/U 0.5 | 96% |
| Olympique Lyonnais O/U 0.5 | 87% |
| O/U 1.5 | 81% |
| 1st Half O/U 0.5 | 78% |
| 2nd Half O/U 0.5 | 66% |
| Olympique Lyonnais 1st Half O/U 0.5 | 65% |
| Olympique Lyonnais O/U 1.5 | 64% |
| AC Sparta Praha O/U 0.5 | 64% |
| O/U 2.5 | 59% |
| Team to Advance | 59% |
| Olympique Lyonnais 2nd Half O/U 0.5 | 56% |
| Both Teams to Score | 55% |
| 2nd Half O/U 1.5 | 50% |
| AC Sparta Praha 2nd Half O/U 0.5 | 46% |
| Olympique Lyonnais 2nd Half O/U 1.5 | 43% |
| Olympique Lyonnais (-1.5) | 40% |
| 1st Half O/U 1.5 | 38% |
| Olympique Lyonnais 1st Half O/U 1.5 | 38% |
| 2nd Half O/U 2.5 | 38% |
| O/U 3.5 | 35% |
| Olympique Lyonnais O/U 2.5 | 33% |
| AC Sparta Praha 1st Half O/U 0.5 | 31% |
| Both Teams to Score in Second Half | 31% |
| AC Sparta Praha 2nd Half O/U 1.5 | 30% |
| AC Sparta Praha O/U 2.5 | 27% |
| AC Sparta Praha 1st Half O/U 1.5 | 26% |
| AC Sparta Praha O/U 1.5 | 24% |
| Olympique Lyonnais (-2.5) | 21% |
| Both Teams to Score in First Half | 20% |
| O/U 4.5 | 18% |
| 1st Half O/U 2.5 | 17% |
| O/U 5.5 | 10% |
| AC Sparta Praha (-1.5) | 6% |
| AC Sparta Praha (-2.5) | 0% |
Market context
Olympique Lyonnais face AC Sparta Praha with the market sitting at **40% YES**, which is broadly consistent with a live tie that is close enough for a single result or late team news to matter, rather than a one-sided mismatch. The most recent head-to-head result was Sparta’s 2-1 home win on 4 August, but the longer UEFA record still favours Lyon, who have won three of the four or five meetings listed across major databases, with Sparta taking one and one draw recorded; the UEFA history page shows Lyon 3 wins, 1 draw, Sparta 0 in that specific competition set, which is the cleanest reference point for reading historical strength.[5][16][7] For comparison, scoreline-heavy histories such as FootyStats and SoccerPunter show average totals around 2.7 to 4.6 goals depending on the sample, which supports the view that “more markets” here are likely to be sensitive to goals, cards, and corners rather than just the match winner.[1][6]
For traders comparing Polymarket with Kalshi, Betfair, or Smarkets, the key difference is how this 40% crowd estimate maps into tradable terms: on exchange-style books, that is roughly similar to decimal odds around 2.50 before commission, while Polymarket quotes the probability directly and the other venues usually surface price plus fees separately. Betfair and Smarkets can be cheaper for active traders if liquidity is good, but KYC reach and account access vary by jurisdiction, so the same event can trade at slightly different implied prices even before fees; that matters on a niche UEFA market where thin books can widen spreads. The main catalysts are straightforward: the final team sheets, any change to the scheduled 3:00 pm ET kick-off on 11 August, and whether the market is settled off full-time conditions or a specific “more markets” sub-rule. ESPN’s match page confirms the 4 August first leg finished Sparta 2-1 Lyon, so any late confirmation of line-ups, rotation, or injury absences will be the most immediate driver of repricing.[17][12]
Methodology
We read Olympique Lyonnais vs. AC Sparta Praha - 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
- Polymarket vs Kalshi — which is better?
- Depends on your location. Kalshi is CFTC-regulated, US-only with full KYC. Polymarket is global, on-chain, no KYC up to $1,500. Polymarket has ~10x higher liquidity but higher regulatory risk.
- 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.
- 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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