New Headline: Kalshi Joins $100K Bracket Battle for Cash and Glory

The betting website Kalshi is offering a colossal $1 billion prize for correctly predicting the winner of every single March Madness basketball game — a feat that is mathematically almost impossible. Each year, tens of millions of people make their bets about who will triumph at every stage of the NCAA Division I men's basketball tournament, known as March Madness . But with 64 teams competing in 63 famously unpredictable knockout games , the odds of calling every single result correctly are potentially as low as 9.

2 quintillion to 1, and it has never happened in history (as far as we know). "You probably won’t win this contest," Kalshi said in a blog post on Monday , claiming that it wanted to give the world "a lesson in probability". "To put this into perspective, you are more likely to be struck by lightning than create the perfect bracket.

Your odds are roughly equivalent to searching for one grain of sand from all of Earth’s beaches and deserts, and getting it right on the first try. " There is, however, a silver lining: if nobody makes a perfect bet, Kalshi will pay out $1m to the best-scoring entrant, while giving $500,000 each to two education non-profits. Kalshi, much like its rival Polymarket, is a controversial 'prediction market' service that lets users bet against each other on whether certain events will come to pass.

The Florida Gators celebrate after defeating the Houston Cougars in the National Championship of the NCAA Men's Basketball Tournament at the Alamodome on April 07, 2025 in San Antonio, Texas (Getty Images) Courts are still deciding whether or not this counts as gambling, with some states suing the company for operating unlicensed betting operations, while the companies and the Trump administration insist that it‘s merely financial trading . Trump's family has ties to both companies. This year, U.