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 |
|---|---|
| ↓ 64,000 | 100% |
| ↑ 65,000 | 22% |
| ↓ 63,000 | 14% |
| ↓ 62,000 | 3% |
| ↑ 66,000 | 1% |
| ↑ 72,000 | 0% |
| ↑ 71,000 | 0% |
| ↑ 70,000 | 0% |
| ↑ 69,000 | 0% |
| ↑ 68,000 | 0% |
| ↑ 67,000 | 0% |
| ↓ 61,000 | 0% |
| ↓ 60,000 | 0% |
| ↓ 59,000 | 0% |
| ↓ 58,000 | 0% |
| ↓ 57,000 | 0% |
Market context
Bitcoin's price action on 11 August 2026 will be determined by spot and futures trading across global exchanges, with settlement tied to a specific moment or daily close. The 0% crowd probability on Polymarket suggests either extreme confidence in a narrow price band or minimal liquidity in this particular contract. Kalshi and Betfair typically see deeper order books on Bitcoin price brackets, whilst Smarkets' decimal odds format can reveal sharper probability distinctions when traditional implied probabilities cluster near extremes. The settlement window closing on 12 August at 04:00 UTC creates a hard boundary; traders on platforms with different fee structures—Polymarket's 2% maker/taker versus Kalshi's variable commission—will price execution costs differently into their positions.
Historical precedent matters here: Bitcoin's daily volatility has ranged from 2–8% in recent years, meaning a single day's move of $2,000–$5,000 from any baseline is plausible. The 0% reading likely reflects either a very tight price range already priced in or insufficient order flow to establish a meaningful market. Comparable single-day price brackets on Betfair and Smarkets have shown that when crowd confidence is this skewed, the true uncertainty often lies in tail-risk scenarios—regulatory announcements, macro shocks, or exchange incidents—rather than normal trading ranges.
Traders should monitor Federal Reserve communications and any major cryptocurrency custody or regulatory developments in the weeks preceding August. Geopolitical events affecting risk appetite, alongside traditional equity market volatility, historically correlate with Bitcoin's daily moves. The KYC requirements across platforms (Polymarket's stricter US restrictions versus Smarkets' broader reach) may fragment liquidity, leaving arbitrage opportunities for cross-platform traders.
Methodology
This page compares What price will Bitcoin hit on August 11? 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
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.
- 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.
- Which platform is accessible globally?
- Polymarket is geo-blocked in the US/UK/EU. Kalshi is US-only. Betfair and Smarkets are UK-restricted. Polymarket Alternative 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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