What Kalshi's World Cup partnership means for prediction markets

The world's biggest soccer tournament has produced an unlikely partnership.

Kalshi, the largest regulated prediction market in the United States, and ADI Predictstreet, FIFA's official prediction market partner, have announced a strategic partnership ahead of the World Cup knockout stages.

In soccer terms, two teams, or companies, that might once have been viewed as rivals have now decided to play on the same side.

The agreement will see Kalshi co-branded alongside ADI Predictstreet across stadium, broadcast and digital placements throughout the remainder of the tournament.

For sports fans, it is another sign that prediction markets are becoming one of the biggest off-field stories of the 2026 World Cup.

From competitors to teammates

Prediction markets have become increasingly crowded over the past two years.

Kalshi, Polymarket, DraftKings Predictions, Fanatics Markets, Novig, ProphetX and ADI Predictstreet are all competing for users as the category rapidly expands.

That is what makes this partnership so significant.

Rather than competing for attention during soccer's biggest event, Kalshi and ADI Predictstreet have chosen to work together.

Kalshi brings scale and a dominant position within the regulated US prediction market industry. ADI Predictstreet brings official FIFA rights and a global World Cup audience.

Together, they are hoping to introduce millions of soccer fans to prediction markets during the tournament.

What the partnership includes

The companies say the partnership will focus initially on co-branded World Cup experiences, prediction markets and fan engagement products, while a joint World Cup Hub featuring soccer prediction markets, tournament updates and exclusive content is expected to be a centerpiece of the collaboration.

The agreement also includes plans around international expansion, infrastructure integration and future technology development.

What bettors should understand

The bigger takeaway may not be the partnership itself.

It is what the partnership says about where prediction markets are heading.

The World Cup is increasingly becoming a showcase event for the industry, much like the Super Bowl became for sportsbooks.

And if competitors are willing to become teammates to capture that opportunity, it suggests that prediction markets see soccer's biggest tournament as their biggest moment yet.