Earnpark publishes multi-platform prediction market comparisons
Earnpark published a pair of platform comparison pieces that map how Kalshi, Polymarket US, Robinhood Predict, PredictIt, and Manifold differ on regulation, fees, custody, and access. A separate 7 Oracles analysis examined settlement infrastructure, finding Kalshi and Polymarket US both use CF Benchmarks for 15-minute Bitcoin markets while Polymarket's offshore venue relies on Chainlink. The crop of guides arrives as retail brokerage integrations put event contracts inside mainstream trading accounts.
Comparison guides like Earnpark's signal that prediction market operators now compete for users who shop across platforms rather than settling on one venue. Retail traders migrating from Robinhood and Kalshi event contracts debut on Robinhood, Coinbase, Webull, and Moomoo expect to evaluate regulation, fees, and custody at a glance. Earnpark's framing of Kalshi as dollar-based CFTC-regulated against Polymarket's global USDC liquidity gives traders a shorthand for risk appetite.
For platforms, these guides become reputation battlegrounds: any fee edge or regulatory gap gets amplified when placed side-by-side with four rivals. The danger for Polymarket is that US users primed by brokerages may not distinguish its CFTC-regulated US venue from offshore pools. Guides that blur the two could steer conservative capital toward Kalshi or Robinhood Predict instead.