Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Best Prediction Markets UK) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | View on Polymarket → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | View on Polymarket → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | View on Polymarket → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | View on Polymarket → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | View on Polymarket → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| ↑ 2,500 | 100% |
| ↑ 2,250 | 100% |
| ↑ 2,000 | 100% |
| ↑ 1,750 | 100% |
| ↑ 1,750 | 100% |
| ↓ 2,500 | 100% |
| ↓ 2,000 | 100% |
| ↓ 2,250 | 79% |
| ↑ 2,750 | 69% |
| ↓ 2,000 | 49% |
| ↑ 3,000 | 48% |
| ↑ 3,500 | 25% |
| ↓ 1,750 | 23% |
| ↓ 1,500 | 15% |
| ↑ 4,000 | 14% |
| ↓ 1,250 | 11% |
| ↑ 4,500 | 9% |
| ↑ 5,000 | 6% |
| ↓ 1,000 | 6% |
| ↓ 800 | 5% |
| ↑ 6,000 | 4% |
| ↓ 700 | 3% |
| ↑ 6,500 | 3% |
| ↑ 5,500 | 3% |
| ↓ 600 | 2% |
| ↓ 500 | 2% |
| ↑ 8,000 | 2% |
| ↑ 7,500 | 2% |
| ↑ 7,000 | 2% |
| ↑ 10,000 | 1% |
Market context
Ethereum's price trajectory through 2026 hinges on whether the second-largest cryptocurrency will sustain a rally above its previous all-time high of approximately $4,891 (reached in November 2021) before the settlement deadline in January 2027. The 43% implied probability across prediction markets reflects material uncertainty about whether macroeconomic conditions, regulatory clarity, and network adoption will align to drive such appreciation over the next two years.
Historical precedent suggests caution about extrapolating from prior cycles. Ethereum took roughly four years to recover and exceed its 2018 peak following the bear market of 2018–2019, whilst the 2021–2022 downturn saw prices fall 67% from peak to trough. Current implied odds sit notably below the 60–70% probability range seen in comparable bull-case scenarios during 2020–2021, suggesting the market prices in meaningful structural headwinds or requires additional catalysts to shift conviction upward.
Near-term catalysts centre on Ethereum's Shanghai and subsequent upgrade roadmap, institutional adoption metrics, and broader cryptocurrency regulatory developments. The U.S. Securities and Exchange Commission's stance on spot Ethereum exchange-traded funds—approved in July 2024—has already removed a significant regulatory barrier, though traders should monitor Federal Reserve policy and macroeconomic growth expectations, which typically correlate with risk-asset performance. Divergence between sportsbook-style crypto derivatives (which often imply higher volatility premia) and prediction-market odds suggests some disagreement on tail-risk pricing; traditional equity analysts covering blockchain infrastructure remain split between bull cases targeting $5,000–$8,000 and bear cases anchored to $2,000–$3,000 ranges.
Methodology
Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.
Resolution & payout
At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.
On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.
UK Frequently Asked Questions
- Is this market available outside the US?
- Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.
- How does resolution work?
- Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.
- What's the difference between YES and NO shares?
- A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.
- What does Polymarket cost to trade?
- Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.
- What are the best prediction markets for UK traders in 2026?
- For UKGC-regulated markets: Betfair Exchange (sports, politics) and Smarkets (sports, politics, lower commission than Betfair). For broader global event prediction: Polymarket (deepest liquidity, 0% fee, USDC settlement). For US-regulated option: Kalshi (USD, limited UK payment options). Most serious UK traders use a combination of Betfair for regulated sports and Polymarket for broader markets.
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