Kalshi vs Polymarket 2026: Fees, Markets & US Legality

Two years ago the choice in the prediction market space was pretty straightforward. Polymarket was the crypto-native platform Americans weren’t meant to touch while Kalshi was the regulated US exchange that played by the book. Fast forward to today and there are multiple other prediction market platforms like Rothera, Predictdotfun, Opinion, Limitless etc that are...