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 |
|---|---|
| O/U 0.5 | 100% |
| O/U 1.5 | 100% |
| O/U 2.5 | 100% |
| O/U 3.5 | 100% |
| Both Teams to Score | 100% |
| Both Teams to Score in First Half | 100% |
| 1st Half O/U 0.5 | 100% |
| 1st Half O/U 1.5 | 100% |
| 1st Half O/U 2.5 | 100% |
| Inter Miami CF O/U 0.5 | 100% |
| Inter Miami CF O/U 1.5 | 100% |
| Columbus Crew O/U 0.5 | 100% |
| Columbus Crew O/U 1.5 | 100% |
| Inter Miami CF 1st Half O/U 0.5 | 100% |
| Inter Miami CF 1st Half O/U 1.5 | 100% |
| Columbus Crew 1st Half O/U 0.5 | 100% |
| 2nd Half O/U 0.5 | 100% |
| Columbus Crew 2nd Half O/U 0.5 | 100% |
| Inter Miami CF (-1.5) | 0% |
| Columbus Crew (-1.5) | 0% |
| Inter Miami CF (-2.5) | 0% |
| Columbus Crew (-2.5) | 0% |
| O/U 4.5 | 0% |
| O/U 5.5 | 0% |
| Inter Miami CF O/U 2.5 | 0% |
| Columbus Crew O/U 2.5 | 0% |
| Columbus Crew 1st Half O/U 1.5 | 0% |
| Both Teams to Score in Second Half | 0% |
| 2nd Half O/U 1.5 | 0% |
| 2nd Half O/U 2.5 | 0% |
| Inter Miami CF 2nd Half O/U 0.5 | 0% |
| Inter Miami CF 2nd Half O/U 1.5 | 0% |
| Columbus Crew 2nd Half O/U 1.5 | 0% |
Market context
Inter Miami CF’s league game against Columbus Crew on 1 August has already produced a wide range of comparable outcomes, which is one reason a **0% YES** price on “More markets” can be read as a thin-liquidity artefact rather than a stable view on the match itself. Recent head-to-heads have been lively and mostly favoured Miami: Miami won 5-1 in May 2025, 1-0 in April 2025, and 3-2 in October 2024, while the teams have also produced a 3-2 and a 2-1 in earlier meetings.[1][16] Across the last 10 head-to-heads, Miami has six wins to Columbus’s three, with one draw, and both teams have scored in a large share of recent meetings.[3][4] That matters for platform comparison because Polymarket-style markets show a clean implied probability, while Betfair, Smarkets and similar books expose the same disagreement through decimal odds and, crucially, commission or fee drag; a 0% crowd signal on a broad “more markets” contract can therefore be less informative than the underlying match data.
For traders, the key catalysts are lineup and scheduling news rather than the historic record. Miami entered this fixture after a 1-0 win at Montreal, while Columbus had just beaten Cincinnati 2-1, so late rotation or rest decisions can materially affect derivative markets tied to cards, goals, or player props.[15] ESPN and FBref show that Miami’s recent games have combined strong possession with higher shot volume, which tends to support more volatile ancillary markets when Lionel Messi is available.[12][16] On platform access, Kalshi and Polymarket generally differ from Betfair and Smarkets in KYC reach and fee treatment, so the same event can trade at different effective prices even when the headline probability looks similar; that gap is most visible in low-liquidity markets where order-book depth, not just football fundamentals, sets the price.
Methodology
This page compares Inter Miami CF vs. Columbus Crew - More Markets 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
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
- 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.
- 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.
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