UFC odds on Kalshi vs Polymarket
UFC fight markets. Right now there are 30 open UFC markets — 25 on Kalshi, 5 on Polymarket — carrying $11k of volume in the last 24 hours.
Open UFC markets, by volume
| Market | Venue | Yes | 24h volume | Closes |
|---|---|---|---|---|
| UFC Fight Night: Brendan Allen vs. Christian Leroy Duncan (Middleweight, Main Ca | polymarket | 55¢ | $3k | 10-11 02:30 UTC |
| UFC Fight Night: Otari Tanzilovi vs. Malcolm Wellmaker (Bantamweight, Main Card) | polymarket | 35¢ | $3k | 10-11 00:00 UTC |
| UFC Fight Night: Jai Herbert vs. Matheus Camilo (Lightweight, Main Card) | polymarket | 37¢ | $2k | 10-11 02:00 UTC |
| UFC Fight Night: Melissa Gatto vs. Ernesta Kareckaite (Women's Flyweight, Prelim | polymarket | 54¢ | $1k | 10-10 21:00 UTC |
| UFC Fight Night: Ismael Bonfim vs. Francisco Prado (Welterweight, Prelims) | polymarket | 53¢ | $898 | 10-10 23:30 UTC |
| Fight Night: Allen vs Duncan — Christian Duncan | kalshi | 36¢ | $130 | 10-11 06:40 UTC |
| Fight Night: Camilo vs Herbert — Jai Herbert | kalshi | 36¢ | $111 | 10-11 06:20 UTC |
| Fight Night: Allen vs Duncan — Brendan Allen | kalshi | 35¢ | $108 | 10-11 06:40 UTC |
| Fight Night: Camilo vs Herbert — Matheus Camilo | kalshi | 63¢ | $59 | 10-11 06:20 UTC |
| Conor McGregor to fight again before 2028 — Conor McGregor | kalshi | 48¢ | $41 | 01-01 15:00 UTC |
| Fight Night: Kareckaite vs Gatto — Melissa Gatto | kalshi | 53¢ | $39 | 10-11 02:00 UTC |
| Fight Night: Walker vs Meerschaert — Julius Walker | kalshi | 72¢ | $38 | 10-11 05:20 UTC |
| Fight Night: Franco vs Ribeiro — Felipe Franco | kalshi | 75¢ | $37 | 10-11 03:00 UTC |
| Fight Night: Price vs Shahbazyan — Leon Shahbazyan | kalshi | 59¢ | $37 | 10-11 03:20 UTC |
| Fight Night: Prado vs Bonfim — Ismael Bonfim | kalshi | 50¢ | $36 | 10-11 03:40 UTC |
| Fight Night: Frye vs Harris — RJ Harris | kalshi | 65¢ | $17 | 10-11 02:40 UTC |
| Fight Night: Kareckaite vs Gatto — Ernesta Kareckaite | kalshi | 46¢ | $1 | 10-11 02:00 UTC |
| Fight Night: Walker vs Meerschaert — Gerald Meerschaert | kalshi | 28¢ | $1 | 10-11 05:20 UTC |
| Fight Night: Franco vs Ribeiro — Brendson Ribeiro | kalshi | 24¢ | $1 | 10-11 03:00 UTC |
| Fight Night: Wellmaker vs Tanzilovi — Otari Tanzilovi | kalshi | 30¢ | $1 | 10-11 05:00 UTC |
The 20 most active of 30, by 24h volume across both venues, refreshed every few minutes. A market listed on only one venue has no cross-venue price to compare against — which is true of most of them.
What two venues' prices are worth
A gap between Kalshi and Polymarket on the same UFC market is usually fees, depth, or two contracts that settle differently — not free money. The arbitrage guide shows today's gaps before and after fees, and the fee page shows why the cost peaks near 50¢.
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