Kalshi vs Polymarket on college football games: where the prices disagree today
78 college football games priced on both Kalshi and Polymarket right now, $920k traded in 24 hours. The widest disagreement is Indiana at +$0.02. Updated every 45 seconds.
| Event | Outcome | Kalshi | Polymarket | Gap, + = Kalshi higher | Edge after fees | |
|---|---|---|---|---|---|---|
| Indiana vs. Michigan Oct 24, 12:00 PM ET | Indiana | $0.72 | $0.70 | +$0.02 | -2.05% | Kalshi · Polymarket |
| James Madison vs. Appalachian State Oct 22, 7:00 PM ET | James Madison | $0.79 | $0.78 | +$0.01 | -2.86% | Kalshi · Polymarket |
| Army vs. Tulsa Oct 23, 8:30 PM ET | Tulsa | $0.54 | $0.54 | $0.00 | -4.25% | Kalshi · Polymarket |
| NC State vs. Stanford Oct 23, 10:30 PM ET | NC State | $0.72 | $0.71 | +$0.01 | -4.01% | Kalshi · Polymarket |
| Middle Tennessee vs. Florida International Oct 20, 7:00 PM ET | Florida International | $0.78 | $0.78 | $0.00 | -3.86% | Kalshi · Polymarket |
| Oregon vs. Illinois Oct 24, 3:00 PM ET | Oregon | $0.76 | $0.76 | $0.00 | -3.91% | Kalshi · Polymarket |
| Tennessee vs. South Carolina Oct 24, 3:30 PM ET | South Carolina | $0.55 | $0.55 | $0.00 | -4.24% | Kalshi · Polymarket |
How this is built
Every event listed on both exchanges is matched outcome by outcome: games by team codes and date, multi-outcome markets by name. Prices are mid-market, in dollars on a contract that pays $1 if the outcome happens: Polymarket from its live order book, Kalshi from its public API. Gap is Kalshi minus Polymarket. Thin books (spread over $0.10) and near-certain favorites are excluded from this table.
Edge after fees
Buy one side on one venue and the other side on the other, both at the ask. Edge is $1 minus total cost minus taker fees, Kalshi ⌈0.07·P·(1−P)⌉ per contract and Polymarket 0.05·P·(1−P) on sports, as a percent of the $1 payout. Not advice; nothing here places orders.
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