Polymarket publishes its track record on a dedicated
Accuracy page. As of the latest data, Polymarket odds are accurate over 90% of the time a full month before a market resolves, and that figure rises above 96% within four hours of resolution. The platform also reports a Brier score — a standard statistical measure where lower numbers mean better calibration — of 0.0843 across resolved markets. In practical terms, this means that when Polymarket prices indicate a 70% probability, the corresponding outcome happens roughly 70% of the time. Research consistently shows that prediction markets with real financial stakes tend to outperform polls, expert panels, and pundit forecasts because traders are rewarded for accuracy and penalized for being wrong.