Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Kalshi Alternative UK) Pick polygram.ink (preferred broker) |
88% | 12% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
88% | 12% | 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 → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 64,000-66,000 | 88% |
| 62,000-64,000 | 7% |
| 66,000-68,000 | 7% |
| <54,000 | 0% |
| 54,000-56,000 | 0% |
| 56,000-58,000 | 0% |
| 58,000-60,000 | 0% |
| 60,000-62,000 | 0% |
| 68,000-70,000 | 0% |
| 70,000-72,000 | 0% |
| >72,000 | 0% |
Market context
Bitcoin is trading in the mid-$60,000s, so the key question for 9 August is whether the Binance noon ET 1-minute close lands inside the market’s bracket rather than simply where spot is trading at other points in the day. Recent data points suggest a relatively tight range: Bitcoin closed August 2026 so far near $64,878 on 7 August, while other live/historical trackers around 6–8 August put it roughly between $64,000 and $65,000.[1][2][5][13]
That context matters because the crowd-implied 0% YES looks more like a pricing quirk than a genuine conviction that the outcome is impossible. On comparable venues, the same event is expressed differently: Polymarket shows bracketed outcomes with implied probabilities, while Kalshi-style contracts are typically quoted as yes/no prices; Betfair and Smarkets instead show decimal odds, which can make the same view look less or more extreme once exchange commission is factored in. For a trader comparing books, the practical difference is not just presentation: fee structures, available brackets, and jurisdictional KYC rules can all change the effective price of taking a view on a narrow intraday BTC print.[8]
The main catalysts before the noon ET fix are standard crypto flow rather than a single scheduled event: macro headlines that move USD liquidity, any sharp post-weekend break in Bitcoin’s spot market, and exchange-specific volatility around Binance’s own order book and candle construction. Independent August forecasts have pointed to BTC staying in a roughly $65,000–$70,000 band into early August, which is consistent with a market where a small move can decide the relevant bracket, but not enough to justify treating the current 0% read as a forecast of certainty.[14][15][18]
Methodology
This page compares Bitcoin price on August 9? 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 Kalshi Alternative UK, 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.
UK Frequently Asked Questions
- 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.
- Polymarket vs Betfair Exchange: which is better for UK prediction trading?
- Betfair Exchange offers UKGC regulation, GBP settlement, and potentially tax-free winnings — but focuses on sports and politics only. Polymarket has deeper liquidity, 0% platform fee, global event coverage, and crypto/geopolitical markets Betfair doesn't offer. For UK traders: Betfair for regulated GBP sports markets; Polymarket for broader, global prediction events.
- Is Kalshi available in the UK?
- Kalshi is a US CFTC-regulated prediction exchange. UK residents can create accounts but must use USD and US payment methods. Kalshi's product range overlaps with Polymarket but with lower liquidity on most contracts. For UK traders, Polymarket typically offers better prices due to higher global volume.
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