Meta interest in prediction markets did not start with Arena. NPR reports that Mark Zuckerberg met Kalshi CEO Tarek Mansour in 2025 to discuss a possible acquisition, but Meta later chose to build its own app instead.
Good to know
Meta can test prediction markets without buying Kalshi or taking on every legal problem tied to real money sports contracts.
Arena, the reported in house app, would use AI to find trending questions and turn them into contracts. That fits Meta better than a stand alone exchange model. Facebook, Instagram, WhatsApp, Messenger, and Threads already create daily conversations around sports, politics, finance, entertainment, and news. Arena could turn some of that behavior into social forecasting.
Kalshi offered a faster route into the prediction market sector. It also came with legal baggage. The company launched sports event contracts in January last year, and several states have challenged those markets because they look close to sports betting. Kalshi says federal CFTC oversight gives it the right to offer event contracts. States disagree and want state gambling rules to apply.
That conflict likely made a Meta deal harder. NPR also reported that Mansour may not have wanted to sell, after guiding Kalshi through rapid growth.
So Meta picked the cleaner test. A points based Arena app lets the company study user demand, train AI around trending markets, and avoid direct sportsbook style cash trading at the start. The larger question comes later: whether Arena stays a game, or becomes Meta gateway into real money prediction markets.