Polymarket has accused Kalshi of significantly inflating its esports trading volume by $1.7 billion. According to a Polymarket team member, Kalshi's reported figures are misleading, with the actual trading volume being around $63 million, less than 10% of Polymarket's own esports volume. The accusation also highlights alleged duplicate counting in Kalshi's Counter-Strike markets, where trades are listed under both "CS:GO" and "CS2."