Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Robinhood Prediction Markets) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Go to the live market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Go to the live market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Go to the live market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Go to the live market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Go to the live market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 1,400 | 100% |
| 1,500 | 100% |
| 1,600 | 99% |
| 1,700 | 96% |
| 1,800 | 81% |
| 1,900 | 25% |
| 2,000 | 3% |
| 2,100 | 1% |
| 2,200 | 1% |
| 2,300 | 0% |
| 2,400 | 0% |
Market context
Ethereum needs to finish the relevant Binance 1-minute candle above the listed threshold at noon ET on 4 August, so this is a *single-tick* question rather than a broad end-of-day call. On current market pricing, a 100% Yes implies the contract is effectively at or very near the maximum, which usually reflects either a very low strike relative to ETH/USDT or a book that has already priced in the outcome; on Polymarket, the displayed figure is an implied probability, whereas on Kalshi, Betfair and Smarkets traders are more often comparing decimal odds or exchange-style prices after fees and commissions are considered.
For historical framing, ETH forecasts for early August 2026 vary widely but cluster well above the low-$1,700s in several forecast models, with some sources putting 4 August near $1,689–$2,700 and monthly August ranges from roughly $1,717 to $3,399.[1][2][4][10][19] That spread matters because this market settles on Binance’s ETH/USDT close for one specific minute, not on a daily average or a different exchange, so even a broadly bullish ETH view does not automatically translate into a clean win unless price is comfortably beyond the strike at the exact noon ET candle.[2][4][20]
Traders watching the next catalyst set should focus on any ETF flow headlines, Ethereum ecosystem governance or scaling updates, and broader macro moves that can spill into crypto liquidity, because those tend to move ETH intraday more than slower-moving consensus forecasts. Recent market coverage also shows prediction-market traders treating year-end ETH outcomes as heavily range-bound rather than explosive, with one report citing Polymarket odds that were far below the most optimistic analyst targets, which is a reminder that platform pricing and analyst forecasts often diverge materially.[16][17] KYC access and fee treatment also differ: exchange-based books such as Betfair and Smarkets typically apply jurisdictional checks and market commissions, while crypto-native venues like Polymarket generally express the view directly as a probability, making the same outcome look cheaper or pricier depending on how fees and settlement conventions are compared.
Methodology
We read Ethereum above … on August 4? 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.
- 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.
- Which platform supports Klarna/SOFORT?
- Directly: none. Polymarket accepts only USDC on Polygon. Robinhood Prediction Markets offers a fiat on-ramp via Klarna or SOFORT (DE/AT/CH) and converts internally to USDC for the Polymarket order book. T+1 processing.
Trade Ethereum above … on August 4? on Robinhood Prediction Markets
Live order book, 0% fees, USDC settlement in seconds.
Open live market →