Kalshi Market Prediction App surpasses $4,3 billion in volume and outperforms Polymarket in October.

• Kalshi App registers record volume of US$ 4,3 billion.
• Prediction markets attract users outside the crypto sector.
• Polymarket loses ground to rival focused on Web2.

A Kalshi, platform Polymarket, a leading prediction market competitor, reached a historic milestone in October by registering over $4,39 billion in monthly trading volume. This performance confirms the sector's rise, which surpassed $1 billion in total transactions during the same period, solidifying investors' growing interest in betting on economic, political, and sporting events.

Unlike Polymarket, which operates on a blockchain basis and requires the use of digital wallets and cryptocurrencies, Kalshi relies on a model geared towards the Web 2 audience. The absence of technical barriers and integration with platforms like Robinhood have allowed the company to reach a broader user base, bringing it closer to the profile of traditional investors.

JUST IN: Kalshi prediction market sets record $4.39 billion in monthly volume for October. pic.twitter.com/A61WCczuKn

— Whale Insider (@WhaleInsider) November 3, 2025

According to data from Dune Analytics, the final week of October was the most intense for Kalshi, with trading volume close to US$1 billion. This expansion was mainly driven by bets on sporting and political events, areas that have proven to be the most active on the platform.

Rapid growth, however, brought operational challenges. Kalshi faced technical glitches and temporary outages, repeating similar problems also seen at Polymarket. Even so, both managed to maintain some of their operations through APIs, allowing more experienced traders to continue their positions.

Despite not adopting blockchain technology, Kalshi has benefited from the increased public curiosity about prediction markets. The regulated and more accessible platform has attracted users interested in trading real-world events in a simple and legal way, while Polymarket remains more popular among cryptocurrency enthusiasts and those in the Web3 universe.

Interest in platforms like Kalshi and Polymarket reflects a new phase for prediction markets, which are consolidating as an investment alternative and social analytics tool. With increasing volumes and growing adoption, the sector is on track to become one of the most closely watched segments both within and outside the cryptocurrency ecosystem.