Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Alternative) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open the market → |
Polymarket (direct) polymarket.com |
100% | 0% | 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 | 100% |
| O/U 1.5 | 100% |
| 1st Half O/U 0.5 | 100% |
| 1st Half O/U 1.5 | 100% |
| Chicago Fire FC O/U 0.5 | 100% |
| Chicago Fire FC O/U 1.5 | 100% |
| Chicago Fire FC 1st Half O/U 0.5 | 100% |
| Chicago Fire FC 1st Half O/U 1.5 | 99% |
| O/U 2.5 | 88% |
| Chicago Fire FC (-1.5) | 71% |
| Chicago Fire FC O/U 2.5 | 71% |
| Portland Timbers O/U 0.5 | 64% |
| O/U 3.5 | 58% |
| Both Teams to Score | 58% |
| 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% |
| Chicago Fire FC 2nd Half O/U 0.5 | 50% |
| Chicago Fire FC 2nd Half O/U 1.5 | 50% |
| Portland Timbers 2nd Half O/U 0.5 | 50% |
| Portland Timbers 2nd Half O/U 1.5 | 50% |
| Chicago Fire FC (-2.5) | 44% |
| Portland Timbers O/U 1.5 | 41% |
| O/U 4.5 | 32% |
| Portland Timbers O/U 2.5 | 22% |
| O/U 5.5 | 14% |
| Portland Timbers (-1.5) | 1% |
| Portland Timbers (-2.5) | 0% |
| Both Teams to Score in First Half | 0% |
| 1st Half O/U 2.5 | 0% |
| Portland Timbers 1st Half O/U 0.5 | 0% |
| Portland Timbers 1st Half O/U 1.5 | 0% |
Market context
Chicago Fire FC will host Portland Timbers on 16 August 2026 in an MLS regular-season fixture at 6:00 PM ET. The 71% implied probability reflects expectations around match outcomes, team form, or related betting propositions available across multiple platforms. Polymarket's current odds translate to approximately 2.44 in decimal format, whilst Kalshi and Betfair typically express the same probability through different conventions—Kalshi uses binary YES/NO settlement at $1 intervals, whereas Betfair's fractional odds (around 7/4) appeal to bettors accustomed to traditional bookmaking. The settlement window closing at 22:00 ET on match day allows roughly 16 hours post-kick-off for result confirmation, a standard window across most platforms, though fee structures diverge: Polymarket charges 2% on winnings, Kalshi takes 0% on certain markets, and Betfair applies commission only to profits.
Historical MLS head-to-head records between these clubs show competitive balance, with neither side dominating decisively in recent seasons. Portland's performance in 2025 and Chicago's mid-season form entering August will be primary anchors for traders reassessing the 71% figure. Injury reports, roster changes, or unexpected managerial decisions in the fortnight before match day could shift probability significantly; monitor official MLS announcements and club social media for squad updates. Weather conditions at Chicago's venue and fixture congestion—whether either side plays a midweek cup match beforehand—represent secondary catalysts that sharper traders track. Kalshi's KYC requirements remain stricter than Polymarket's, potentially affecting liquidity and entry timing for US-based traders seeking to build positions early.
Methodology
This page compares Chicago Fire FC vs. Portland Timbers - 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 Polymarket Alternative, 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
- 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.
- Which platform supports Klarna/SOFORT?
- Directly: none. Polymarket accepts only USDC on Polygon. Polymarket Alternative 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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