Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Kalshi Alternative UK) Pick polygram.ink (preferred broker) |
91% | 9% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
91% | 9% | 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 |
|---|---|
| ↑ 1,900 | 91% |
| ↓ 1,800 | 79% |
| ↑ 2,000 | 62% |
| ↓ 1,700 | 45% |
| ↑ 2,100 | 41% |
| ↓ 1,600 | 26% |
| ↑ 2,200 | 19% |
| ↓ 1,500 | 14% |
| ↑ 2,300 | 12% |
| ↓ 1,400 | 10% |
| ↑ 2,400 | 7% |
| ↓ 1,300 | 5% |
| ↑ 2,500 | 4% |
| ↑ 2,600 | 2% |
| ↓ 1,200 | 2% |
| ↑ 3,000 | 1% |
| ↑ 2,700 | 1% |
| ↓ 1,100 | 1% |
| ↓ 1,000 | 1% |
| ↓ 900 | 1% |
Market context
Ethereum would need to print a fresh August high at or above the market’s strike level before settlement, and the current 1% crowd-implied probability says traders see that as a very low-probability move. That view is consistent with recent analyst-style forecasts clustering far below euphoric targets: Binance’s August 2026 range is $1,777.09 to $3,399.15, while other modelled outlooks put the month around the low-to-mid $2,000s, with downside support often cited near $1,700-$1,800.[1][3][6][12][15]
For comparison with Polymarket-style pricing, Kalshi and Smarkets usually surface the same event as an implied probability, while Betfair users more often read a decimal-odds market and then convert back to probability, which can make the same view look different once commission is added. The key practical point is that a 1% YES price already embeds a very small chance of a breakout, so even a modestly stronger spot tape can matter more than long-range forecasts. On comparable year-end ETH markets, traders have still priced only limited odds for larger upside milestones, with one Polymarket-linked report noting 15% for $4,000 and 1% for $10,000 by end-2026.[17]
Catalysts to watch are the usual ETH-specific ones: ETF flow data, large exchange withdrawals or deposits, and any update on Ethereum network changes or scaling roadmaps that shifts sentiment on adoption and fees. Market commentary this week still frames August as a support-vs-breakout month, with ETH described as trading near $1,865 and resistance clustered around $2,000 and $2,400 in one recent analysis, so the market is likely to react sharply to whether price can reclaim those levels or slips back towards $1,800.[2]
Methodology
We read What price will Ethereum hit in August? 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.
- 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.
- 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.
- 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. Kalshi Alternative UK 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.
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