Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
PolyGram Pick polygram.ink |
0% | 100% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on PolyGram → |
Polymarket polymarket.com |
0% | 100% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on PolyGram → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on PolyGram → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on PolyGram → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on PolyGram → |
Live odds for Polymarket-based markets come from the Polygon order book. Non-Polymarket venues show attributes only; clicking any row opens the market on PolyGram.
Active sub-markets
Market context
Bitcoin needs to trade at or above a specified price during 18–24 May, with settlement due shortly after the window closes. The market is currently priced at 0% YES, which is materially lower than the live levels implied on other venues: Robinhood’s related contract for 18 May was listing strikes from $76,300 to $77,000 at 98–99¢, while Polymarket’s own wider “in 2026” book has already pushed the top outcomes to the $80,000–$90,000 area. That gap matters for interpretation, because Polymarket shows the price as a probability, whereas Betfair-style exchange markets and some sportsbook-like books express the same view through decimal odds and spreads that can look less intuitive after fees and commissions. KYC access also differs: Polymarket is not available everywhere, while regulated venues such as Kalshi typically have tighter identity checks and a narrower country reach.
Comparable calls this week point to a market that has been range-bound rather than explosive. 24/7 Wall St. said on 1 May that Bitcoin was likely to trade between $75,000 and $85,000 in May, with the 200-day moving average around $82,228 as the key reference point. Changelly’s May forecasts were similarly clustered, projecting roughly $80,600 by late May with a bearish short-term tone and a Fear & Greed score in the fear zone. Against that backdrop, a 0% YES price suggests the contract is being treated as a tail event unless BTC breaks decisively above the upper end of the recent range.
Traders should watch spot ETF flow data, macro releases that move the dollar and rates, and any sharp change in crypto risk appetite. In the near term, Bitcoin’s ability to clear the low-$80,000s matters more than broad year-end targets, because this contract resolves on an intramonth touch rather than a closing price. Robinhood’s price ladder, which uses CF Benchmarks’ real-time index, shows the market still anchored around the high-$70,000s, so a move into the low-$80,000s would be enough to reprice the book quickly. Where platforms diverge is in presentation and cost: Polymarket and Kalshi quote direct probabilities, whereas exchange-style books may embed vig in the spread, making the same risk look cheaper or dearer depending on commission and liquidity.
Methodology
This page compares What price will Bitcoin hit May 18-24? specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. Live odds come from the Polymarket order book; the other venues' contract details are maintained manually because their APIs aren't directly comparable. Every CTA routes to PolyGram, which mirrors the Polymarket order book at 0% fees.
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
- Where can I trade this market with the lowest fees?
- On PolyGram, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- Is this market available outside the US?
- PolyGram is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.
- 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.
- Do I need to KYC for this market?
- Not under $1,500 of lifetime trading volume. Above that threshold, PolyGram triggers a quick verification flow that finishes in minutes.
- How reliable are the quoted odds?
- The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.
Trade What price will Bitcoin hit May 18-24? on PolyGram
Live order book, 0% fees, USDC settlement in seconds.
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