Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Kalshi Alternative UK) Pick polygram.ink (preferred broker) |
38% | 62% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
38% | 62% | 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 |
|---|---|
| ↑ 66,000 | 38% |
| ↓ 62,000 | 38% |
| ↓ 60,000 | 9% |
| ↑ 68,000 | 8% |
| ↓ 58,000 | 3% |
| ↑ 70,000 | 2% |
| ↑ 74,000 | 1% |
| ↑ 72,000 | 1% |
| ↓ 56,000 | 1% |
| ↓ 54,000 | 1% |
| ↑ 78,000 | 0% |
| ↑ 76,000 | 0% |
| ↓ 52,000 | 0% |
| ↓ 50,000 | 0% |
Market context
Bitcoin's price action during the week of 10–16 August 2026 will be determined by macroeconomic releases, Federal Reserve communications, and any material developments in cryptocurrency regulation or institutional adoption. The settlement window captures a seven-day window in mid-summer, a period historically subject to lower trading volumes and wider bid-ask spreads across major spot and derivatives venues.
The 0% implied probability across Polymarket reflects either extreme confidence in a specific price floor or ceiling, or sparse liquidity in this particular market cluster. Kalshi's binary structure and KYC requirements typically attract US-based traders with regulatory clarity; Polymarket's decimal odds format and offshore operation draw international participation, though with higher fee drag on smaller positions. Betfair and Smarkets, whilst established in event betting, have seen limited crypto-native order flow compared to dedicated platforms, which may explain divergent pricing if this market exists across multiple books. Historical precedent suggests that weekly Bitcoin ranges of 5–8% are routine; the absence of YES bets suggests either the strike price sits far outside consensus expectations or traders view the settlement window as too narrow to justify position-taking.
Traders should monitor the Federal Reserve's Jackson Hole Economic Symposium (typically late August, but any pre-meeting commentary matters), US inflation data due mid-month, and announcements from major exchanges regarding custody or listing changes. Geopolitical developments affecting energy costs and mining operations can shift Bitcoin's intraweek trajectory sharply. Cross-platform liquidity fragmentation means early movers on less-crowded books may find better entry prices than on Polymarket's higher-volume order flow.
Methodology
We read What price will Bitcoin hit August 10-16? 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
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
- 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.
- 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.
Trade What price will Bitcoin hit August 10-16? on Kalshi Alternative UK
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