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% |
| ↑ 66,000 | 38% |
| ↓ 60,000 | 15% |
| ↑ 68,000 | 9% |
| ↓ 58,000 | 5% |
| ↑ 70,000 | 3% |
| ↓ 56,000 | 3% |
| ↑ 72,000 | 2% |
| ↑ 74,000 | 1% |
| ↓ 54,000 | 1% |
| ↓ 52,000 | 1% |
| ↓ 50,000 | 1% |
| ↑ 76,000 | 0% |
| ↓ 48,000 | 0% |
Market context
Bitcoin needs to trade through the market’s stated threshold during 3–9 August for this contract to settle YES, so the key question is whether spot can print that level inside the window rather than where it finishes the week. The current crowd-implied probability of 0% YES suggests traders see the target as unlikely, but that can also reflect a narrow price band, stale liquidity, or a contract level that sits well above the prevailing spot range.
Recent August forecasts are split: some model-based calls cluster Bitcoin around the low-to-mid $60,000s, while others allow a wider range with upside towards the high $60,000s or above. That gap matters because a binary “hit” market is much more sensitive than a close-of-month forecast; on Polymarket the market is usually read as an implied probability, while Kalshi and some bookmakers present the same event through decimal pricing or commission-adjusted odds, so fees can make the same view look cheaper or dearer. Access also differs: Polymarket and Kalshi require account verification in supported jurisdictions, whereas Betfair and Smarkets tend to price the same risk more like exchange markets, with commission and regional KYC affecting the net return.
For catalysts, traders are watching US macro data, Federal Reserve communication, ETF flow trends, and any sharp move in risk assets, because Bitcoin has recently been framed around support near the low $60,000s and resistance closer to the high $60,000s. A Crypto News roundup this month linked the August setup to post-Fed positioning, a possible CLARITY Act deadline before the 8 August recess, and whether ETF inflows resume, which are the main dependencies that could lift or cap the intrawweek range[7].
Methodology
We read What price will Bitcoin hit August 3-9? 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
- 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.
- 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. 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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