Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Kalshi Alternative UK) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Trade this market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Trade this market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Trade this market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Trade this market → |
Market context
WTI crude oil futures will either close higher or lower on 13 July 2026 compared to the previous trading session's settlement. The current 100% implied probability across prediction market platforms suggests the crowd expects an upward move, though this extreme confidence warrants scrutiny given crude's historical volatility and the settlement window's proximity to mid-summer, when trading volumes often thin and price swings can amplify.
Single-day directional moves in WTI rarely sustain 100% certainty across multiple venues. Kalshi and Polymarket have diverged notably on comparable energy contracts, with Kalshi's decimal odds format (typically 1.01 for near-certain outcomes) sometimes attracting different liquidity patterns than Polymarket's implied probability display. Betfair and Smarkets, meanwhile, show fee structures that penalise extreme positions differently—Betfair's commission scales with odds, making heavily skewed markets like this one less attractive for backing the favourite. Historical precedent suggests that when crude oil shows this level of consensus, external shocks (geopolitical announcements, inventory data releases, or currency movements) frequently trigger reversals within 24 hours.
Traders should monitor the API release schedule from the US Energy Information Administration, typically published mid-week, which can shift sentiment sharply if crude inventories surprise materially. OPEC+ production decisions and any unexpected supply disruptions would also move prices before the 21:00 UTC settlement. The KYC requirements differ across platforms—Kalshi operates under US regulation with stricter verification, whilst Polymarket's offshore structure may affect which traders can access this contract depending on jurisdiction.
Methodology
We read WTI Crude Oil (WTI) Up or Down on July 13? 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.
- 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. Kalshi Alternative UK has a different geo footprint and routes to Polymarket's order book at 0% fees.
Trade WTI Crude Oil (WTI) Up or Down on July 13? on Kalshi Alternative UK
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