Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via PolyGram) 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 |
|---|---|
| GAIS (-1.5) | 100% |
| O/U 0.5 | 100% |
| O/U 1.5 | 100% |
| GAIS O/U 0.5 | 100% |
| GAIS O/U 1.5 | 100% |
| 2nd Half O/U 0.5 | 100% |
| 2nd Half O/U 1.5 | 100% |
| GAIS 2nd Half O/U 0.5 | 100% |
| GAIS 2nd Half O/U 1.5 | 100% |
| Halmstads BK (-1.5) | 0% |
| Halmstads BK (-2.5) | 0% |
| GAIS (-2.5) | 0% |
| O/U 2.5 | 0% |
| O/U 3.5 | 0% |
| O/U 4.5 | 0% |
| O/U 5.5 | 0% |
| Both Teams to Score | 0% |
| Both Teams to Score in First Half | 0% |
| 1st Half O/U 0.5 | 0% |
| 1st Half O/U 1.5 | 0% |
| 1st Half O/U 2.5 | 0% |
| Halmstads BK O/U 0.5 | 0% |
| Halmstads BK O/U 1.5 | 0% |
| Halmstads BK O/U 2.5 | 0% |
| GAIS O/U 2.5 | 0% |
| Halmstads BK 1st Half O/U 0.5 | 0% |
| Halmstads BK 1st Half O/U 1.5 | 0% |
| GAIS 1st Half O/U 0.5 | 0% |
| GAIS 1st Half O/U 1.5 | 0% |
| Both Teams to Score in Second Half | 0% |
| 2nd Half O/U 2.5 | 0% |
| Halmstads BK 2nd Half O/U 0.5 | 0% |
| Halmstads BK 2nd Half O/U 1.5 | 0% |
Market context
Halmstads BK and GAIS meet in Allsvenskan, with the event already settled on the pitch in a way that makes a **0% YES** crowd price easy to interpret: the contract has no remaining upside and should only be read as a post-result pricing artefact. The most relevant cross-check is the market set around the match itself rather than this contract, because sportsbook and model views on the fixture would normally move around team strength, venue, and recent form; here, the absence of any YES demand indicates no live disagreement left to exploit.
Historically, this is not a fixture that has been low-event for traders. The last four league meetings produced 15 goals in total, including a 3-0 GAIS win, a 1-3 Halmstads win, a 3-1 GAIS win and a 4-0 Halmstads win[1]. Over a broader sample, H2H records are fairly balanced, with one source showing GAIS leading 10 wins to Halmstads’ 6, alongside 5 draws[3], while another longer-run index gives GAIS a narrow edge with 11 wins, 10 defeats and 11 draws across 32 matches[5]. That mix of a close overall matchup and a recent run of open scorelines is the main historical lens for interpreting related “more markets” contracts.
For catalysts, the key drivers were team news, late line-up confirmation and any rotation after congested domestic scheduling. In the days before kick-off, Halmstad had just lost 0-2 to Sirius, while GAIS had drawn 1-1 with Halmstad in the reverse fixture two weeks earlier and also had a midweek European qualifier in late July on its schedule, which can matter for freshness and selection[6]. The most useful comparison point is whether sportsbook derivatives around goals, cards and corners priced in that recent goal pattern more aggressively than the prediction market did; with the contract now at zero, any remaining divergence is mainly in the surrounding markets rather than the settled YES/NO outcome.
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.
FAQ
- Where can I trade this market with the lowest fees?
- Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is PolyGram. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- 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 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.
- 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.
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