Event date: Oct 6, 2026. This is an independent summary of a platform announcement; the original source is linked below.
On October 6, Kalshi announced three transparency features for its midterm election markets: Brier scores, low-volume labels, and more prominent activity feeds. The company presents them as ways to give market forecasts more context.
This article was prepared after the announcement and is background coverage, not a claim that these features launched today.
What the company announced
Kalshi says election markets will display Brier scores derived from historical observations, labels that highlight lower trading volume, and a more visible feed of individual trades. The announcement also discusses election-market context and settlement.
These are descriptions from the platform. Prediction Talks has not reproduced its score calculations or independently validated its broader claims about forecast performance.
Read an accuracy score with its method
A Brier score measures the squared difference between a probability and the eventual binary outcome, averaged across a defined set of forecasts. Lower is better for that evaluation. What belongs in the set, when observations are taken, and how they are weighted affect the interpretation.
A useful comparison therefore needs the evaluation window, market sample, observation timing, weighting, and a consistent benchmark. A number displayed beside one contract is not automatically comparable with a different publisher's score.
Treat volume as context
Low-volume labels can help readers notice a thinner market. They do not prove that every busy market is right or that every small market is wrong. Order-book depth, spreads, participant composition, contract wording, and observation time remain separate questions.
A visible trade feed can show what matched. It does not tell a reader every participant's reason for trading or make the last price executable for unlimited size.
Use the added detail
When inspecting an election market, read the stated score method, note volume and available quotes, and follow the exact settlement criteria. The added interface information is most useful when it prompts better questions.
Start with our order-book guide and explanation of market probabilities, then inspect the platform's own announcement and market rules.