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Prediction challenges that score your accuracy: forecast real-world events, track your calibration, and improve from guesser to forecaster. No gambling.
Free for early members. No credit card required.
What Predict Challenge Does
Run no-stakes prediction challenges that train calibration and track forecasting accuracy over time
Learn to say 70% and be right about 70% of the time — the core forecasting skill.
Brier-style scoring explained: why confident wrong answers cost the most.
Questions about verifiable real-world outcomes, resolved when the facts land.
Base rates, reference classes, and updating on evidence instead of vibes.
Run a season with friends or coworkers and crown the best-calibrated mind.
What research on superforecasters says ordinary people can learn.
How Predict Challenge Works
Pick a question about a real upcoming event and state your probability, not just a yes or no.
Predictions are timestamped and frozen — no edits once the window closes.
When the outcome resolves, your calibration chart updates and shows where you drift.
About
PredictChallenge — Forecast real events, score your accuracy Part of the VentureOS network of 20,000+ smart entities, each built to create real value in its vertical. Backed by 63+ specialist agents, shared infrastructure, and a unified economy.
Get matched
Partners respond. Transparent pricing. No surprises.
No. Nothing is wagered and nothing is paid out — the only currency is accuracy points. PredictChallenge is an educational game, not betting.
The match between your confidence and your hit rate. A calibrated forecaster's 80% predictions come true about 80% of the time.
Yes — research on forecasting tournaments shows practice with feedback, base rates, and frequent updating measurably improves accuracy.
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Read →Explore the Network
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