Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via BTC Prediction) Pick polygram.ink (preferred broker) |
51% | 49% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open live market → |
Polymarket (direct) polymarket.com |
51% | 49% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open live market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open live market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open live market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open live market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Team D | 51% |
| Team A | 50% |
| Team B | 50% |
| Team C | 50% |
| Team E | 50% |
| Other | 50% |
| New York Yankees | 37% |
| Washington Nationals | 17% |
| Houston Astros | 15% |
| Los Angeles Dodgers | 14% |
| Chicago White Sox | 11% |
| Chicago Cubs | 4% |
| Philadelphia Phillies | 4% |
| Atlanta Braves | 3% |
| Arizona Diamondbacks | 2% |
| Boston Red Sox | 2% |
| Cleveland Guardians | 2% |
| Colorado Rockies | 2% |
| Kansas City Royals | 2% |
| Miami Marlins | 2% |
| New York Mets | 2% |
| San Diego Padres | 2% |
| San Francisco Giants | 2% |
| St. Louis Cardinals | 2% |
| Tampa Bay Rays | 2% |
| Baltimore Orioles | 1% |
| Cincinnati Reds | 1% |
| Los Angeles Angels | 1% |
| Milwaukee Brewers | 1% |
| Minnesota Twins | 1% |
| Athletics | 1% |
| Pittsburgh Pirates | 1% |
| Seattle Mariners | 1% |
| Texas Rangers | 1% |
| Toronto Blue Jays | 1% |
| Detroit Tigers | 0% |
Market context
MLB: Most Home Runs (Team) — current market-implied probability: 51%. This market will resolve according to the team that hits the most home runs during the 2026 MLB Regular Season. If two teams tie for the most home runs, this market will resolve in favor of the team …
Methodology
This page reads MLB: Most Home Runs (Team) on-chain. Polymarket's quote comes directly from the Polygon order book — the only comparable venue with on-chain settlement. Kalshi (USD, off-chain), Betfair (GBP/EUR, off-chain) and Manifold (play-money) are listed alongside for venue context. Every CTA routes to BTC Prediction, which mirrors the Polymarket order book directly.
Resolution & payout
Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.
Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.
FAQ
- Why USDC and not ETH or USDT?
- USDC is the Polygon standard — audited reserves (Circle, monthly attestation), deepest order book, low gas costs. ETH volatility would distort probability quotes; USDT has thinner Polygon liquidity than USDC.
- What does a transaction cost on Polygon?
- Polygon gas is typically under $0.01 per transaction. A full trade cycle (Approve + Order + Fill) totals around $0.03 — compared to $5-50 on Ethereum mainnet.
- Can I use Bitcoin directly?
- No, Polymarket operates exclusively in USDC on Polygon. You can bridge BTC to USDC via an exchange or bridge service and deposit on Polygon — typically 10-30 minutes processing time.
- How volatile are crypto prediction markets?
- Crypto markets react to spot prices — a 5% BTC move typically shifts a "BTC above X by date" market 10-20%. Polymarket crypto market liquidity is usually six-figure USD, sufficient for active trading.
- Are crypto prediction markets taxable in the US?
- In the US, prediction market gains are typically treated as ordinary income or short-term capital gains depending on holding period. Consult a tax professional for your specific situation — we cannot provide tax advice.
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