What is Win Probability?
Win probability puts a number on a rep's gut feel about a deal. Whether it comes from a stage default or a model, it is what lets you weight and aggregate deals.
The quality of your forecast depends heavily on how well these probabilities reflect reality rather than optimism.
Short answer
Win probability is the estimated chance that a particular deal will close won, expressed as a percentage. It can come from the deal's stage, a scoring model, or an AI prediction based on engagement and fit. Win probability is the multiplier in weighted pipeline and the core input to per-deal forecasting, so its accuracy directly shapes the forecast.
Key takeaways
- Estimated likelihood a deal closes won, as a percentage.
- Sourced from stage, a model, or AI prediction.
- The multiplier in weighted pipeline.
- Its accuracy shapes forecast reliability.
Why it matters
Every weighted forecast rests on win probabilities. If they are just stage defaults that reps ignore, the forecast is shaky; if they reflect real engagement and fit, the forecast sharpens considerably.
How Ardovo handles it
Ardovo assigns win probability from stage by default and Rook refines it per deal using real engagement, fit, and buying-committee signals, so the number reflects the deal, not just the stage it sits in.
Frequently asked questions
How is win probability calculated?
Most simply, it is the default probability of the deal's stage, drawn from historical stage-to-close conversion. More advanced approaches use a model or AI that scores each deal on engagement, fit, and history for a per-deal probability.
What is the difference between win probability and forecast category?
Win probability is a numeric likelihood used for weighting. Forecast category is a rep's confidence label like commit or best case. Probability drives the math; category adds human judgment about timing and risk.
Why do stage-based probabilities sometimes mislead?
Because they treat every deal in a stage the same, ignoring that one may be engaged and another stalled. Refining probability with real signals per deal produces a far more accurate forecast.