ForecastMind
Calibration/Compare

Polymarket vs Kalshi — Accuracy Comparison

Kalshi was 24% more accurate than Polymarket in Economics (0 resolved markets compared).

polymarket

Mean Abs. Error

kalshi

Brier Score

0.1898

Mean Abs. Error

Small sample (0 matched markets). Cross-venue comparisons require the same event to be tracked on both venues AND subsequently resolve. More data accumulates over time.