Sources earn their weight.
No source is trusted on reputation. Each one is scored against real outcomes, market by market, and a forecaster that cannot beat the category average is dropped to zero weight rather than quietly averaged in. Agreement between sources is not treated as evidence — five forecasters can be wrong together.
Probabilities are built from measured error rather than assumption, and the uncertainty on a market is sized from how far its projections actually land from the result.
A model for this track, on this surface.
Every race is modelled on the history of that track and that surface — a dirt sprint is not scored on turf routes run somewhere else. The model learns finish order directly, ranking a field rather than rating horses in isolation, and reads form as it stood on race day.
Exotics are priced off the whole field, using the long-established correction that a horse’s chance of running second is not simply its chance of winning. Skipping that step is what makes naive exotic prices look better than they are.