Metaculus vs Good Judgment Open
A detailed head-to-head comparison of Metaculus and Good Judgment Open — pricing, features, and which one wins for different use cases.
Metaculus
Reputation-based forecasting platform for serious probabilistic prediction
Metaculus is a forecasting platform — distinct from money-based prediction markets — where a community of forecasters makes probabilistic predictions on science, technology, geopolitics, AI, and world…
Full review →Good Judgment Open
The public forecasting tournament from the Superforecasting researchers
Good Judgment Open is the public forecasting platform run by Good Judgment Inc., the organisation born out of the research that produced the concept of 'Superforecasters' — ordinary people who, with t…
Full review →Feature Comparison
| Feature | Metaculus | Good Judgment Open |
|---|---|---|
| Settlement Mechanism | Admin/community resolution | Admin resolution |
| Trading Model | Forecast aggregation (no money) | Forecast tournament (no money) |
| Collateral Token | None (reputation) | None (Brier score) |
| Min Trade | N/A | N/A |
| Api Access | ✓ | ✗ |
| Embeddable Odds | ✓ | ✗ |
| Geo Restrictions | None | None |
| Market Creation | Community-proposed | Platform-set |
| Mobile App | ✗ | ✗ |
| Governance Token | ✗ | ✗ |
Metaculus Pricing
Metaculus
Free to trade
Free
- ✓Reputation-based forecasting
- ✓Science/tech/geopolitics/AI questions
- ✓Calibration scoring + track records
- ✓Community + Metaculus predictions
- ✓Free to participate
Good Judgment Open Pricing
Good Judgment Open
Free to trade
Free
- ✓Forecasting tournament
- ✓Geopolitics/economics/science questions
- ✓Brier-score accuracy tracking
- ✓Superforecaster methodology
- ✓Free to participate
Verdict: Which Should You Choose?
Metaculus is the better pick if you need rigorous, calibration-scored forecasting. Good Judgment Open wins when backed by the research behind superforecasting. Both are production-ready — the right choice depends on your team's workflow and budget.