Probable Worlds

Calibrated forecasts

Every probability, scored in public

The resolution ledger is our product and our proof: every forecast we have ever issued, scored against what actually happened. No deletions, no do-overs.

The record

Calibration you can audit

A forecast you cannot score is an opinion with confidence theater.

Fig. 02 — reliability diagramtrailing 12 mo
perfect calibration = diagonaln = 18,240 resolved
0.91
Calibration score
18k
Resolved questions
12k
Live questions
0.084
Mean Brier score

When we say 70%, it happens about seven times in ten. That is the whole product.

Recently resolved

From the ledger

QuestionDomainForecastOutcomeBrier
EU carbon price closes above €90 in Q2Energy0.72Yes0.078
Panama Canal daily transits back to 36 by JuneSupply chain0.31No0.096
US CPI YoY prints below 2.6% in MayMacro0.58Yes0.176
Cat-3+ hurricane makes US landfall before Aug 1Climate0.22No0.048
ECB cuts at the July meetingMacro0.84Yes0.026
Baltic Dry Index above 2,000 on Jun 30Shipping0.45No0.203

Illustrative sample. The full ledger — every question, forecast history, and resolution source — is queryable via the World Model API.

Methodology

How scoring works

Brier scored

Every resolved forecast gets a Brier score — squared error against the outcome. Lower is better; 0.084 is the fleet average.

No deletions

Questions cannot be edited or removed after issue. Embarrassing misses stay on the ledger next to the wins.

Sourced resolutions

Every question names its resolution source at issue time — the print, the index, the official record.

Start weighing tomorrow today

Run your first forecast for free, then pay as you go when the decisions get bigger.