Polymarket and Kalshi use different threshold terminology for spread markets. Polymarket frames spreads as win-margin requirements (e.g., '-2.5' means win by 3+ goals), while Kalshi uses explicit 'wins by more than X goals' language. Both resolve on the same underlying event (final score after 90 minutes plus stoppage time from cbf.com.br), but the threshold presentation differs.
Hero Tip:
If you trade spread markets, verify the exact threshold on each platform before placing bets. A '-2.5' spread on Polymarket (win by 3+) is logically equivalent to Kalshi's 'wins by more than 2.5 goals', but the wording can cause confusion. Always cross-check the numeric requirement.
Critical Divergence Points:
Polymarket: Aligned with Kalshi on resolution source and event scope: both settle on official cbf.com.br final score after 90 minutes plus stoppage time. Polymarket frames spreads using negative notation (e.g., 'Spread: Cruzeiro EC (-2.5)' means Cruzeiro wins by 2 or more goals to resolve YES) and over/under markets using combined-goal thresholds ('O/U 1.5' resolves Over if 2+ combined goals). Key quote: 'This market will resolve according to the official final score published on cbf.com.br. This market refers only to the outcome within the first 90 minutes of regular play plus stoppage time.'
Kalshi: Aligned with Polymarket on resolution source and event scope: both settle on official cbf.com.br final score after 90 minutes plus stoppage time. Kalshi frames spreads using explicit 'wins by more than X goals' language (e.g., 'If Cruzeiro wins by more than 2.5 goals... then the market resolves to Yes'). Kalshi does not offer over/under markets in this group. Key quote: 'If Cruzeiro wins by more than 2.5 goals in the Cruzeiro vs Bragantino professional Brasileiro soccer game originally scheduled for Apr 12, 2026 after 90 minutes plus stoppage time (does not include extra time or penalties), then the market resolves to Yes.'
Our PredictionHero Resolution Divergence Alerts (RDA) are there to help users identify potential differences across platforms. They do not replace or supersede the official rules and description of any prediction market. Users are solely responsible for reviewing and understanding the applicable rules and resolution criteria before placing any trade or bet. If you notice a potential inconsistency, discrepancy, or error in an alert, please report it to our team so we can review and improve the accuracy of our data.
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