San Diego vs. Idaho State odds: Kalshi vs Polymarket
Sat, Sep 12, 2026, 6:00 PM ET · college football games · $913 traded in 24h across both venues.
Idaho State: Kalshi 88¢ vs Polymarket 84¢, +4.0 pp
Mid prices. A price is the market's probability: 88¢ means 88%. The gap is Kalshi minus Polymarket in percentage points.
Two separate exchanges, two accounts. Links may carry a referral code, which never changes what is shown. Disclosures.
-5.49¢ per $1, after fees
Buy Idaho State @ Polymarket 89¢, San Diego @ Kalshi 15¢
All outcomes
| Outcome | Kalshi bid / ask | Polymarket bid / ask | Gap |
|---|---|---|---|
| Idaho State | 87¢ / 89¢ | 79¢ / 89¢ | +4.0 pp |
| San Diego | 11¢ / 15¢ | 11¢ / 21¢ | -3.0 pp |
Price history, last 3 days
How this is matched
Games are matched across the two exchanges by league, team codes and date. Polymarket prices come from its live order book, Kalshi from its public API. Refreshed every 45 seconds.
What this is not
Read-only. Nothing here places or routes orders and nothing is advice. Fees, slippage and the time it takes to move money between venues are not in these numbers.