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Before Patrick Mahomes laced up his cleats for his 2026-2027 NFL regular-season debut, US prediction markets had already cleared a historic benchmark for the opening week of the season.

Two operators alone – Kalshi and Polymarket – topped the combined $1 billion mark in NFL trading activity over the first six days of Week 1, according to numerous measures this week. During the period, Kalshi recorded NFL volume of $983.4 million, according to DeFi Rate, earning the pole position by a large margin. Mahomes and the Kansas City Chiefs thrashed the Denver Broncos 31-10 on Monday Night Football, capping the largest week for prediction markets ever.

Even before the primetime matchup in Kansas City, it became abundantly clear that the industry would shatter previous marks for weekly activity. The AFC West showdown bolstered the already robust totals. Overall, volume for the week hit a record $15.9 billion, according to Bank of America, up 16% from a week earlier.

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“To this point, sportsbook product creation has largely been guided by a trading department’s ability to profitably price and risk-manage certain bet offers,” Lamb says. “AI trading lifts those limitations, while also enabling that existing human expertise to be leveraged more effectively.”

The 2026 tournament demonstrated why Kambi believes this total integration of AI is necessary. Sportsbooks are no longer built primarily around match results and traditional pre-match markets. Bettors increasingly expect to construct wagers around individual players and specific moments within a game.

The number of Bet Builder bets on the 2026 World Cup doubled compared to the 2022 tournament, with the increase particularly pronounced in-play, where seven times as many live Bet Builders were placed. They accounted for 22% of all live bets, compared with just 3% four years earlier.

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The implications could extend well beyond companies already established in other areas of gaming.

“You shouldn’t necessarily need 100 people and millions of euros of infrastructure to have a great idea and turn it into a successful slot,” Curwen says.

Lower barriers to entry could significantly widen the pool of potential game creators. Curwen sees opportunities not only for established and emerging studios, but for operators, suppliers, entrepreneurs and potentially entirely new entrants.