The largest public forecasting platform of its kind—GJ Open—is the ideal place to harness the wisdom of crowds. We continue to lead the field with our innovative approach that combines collective insight with cutting-edge analytics. Whether for discovering talent, training your team, or spotting trends, GJ Open is your gateway to informed decision-making and strategic success.
Tailored Tournaments: Public or Private, Your Choice
Enhanced Insights with Custom Feedback Reports
Our team of data scientists doesn’t just aggregate data; they transform it into meaningful insights. We offer personalized feedback reports for individuals and groups, providing a deeper understanding of forecasting performance and areas for improvement.
Trusted by Industry Leaders
Our reputation speaks for itself. Leading media companies, top-tier investment funds, and prestigious universities have leveraged GJ Open to sharpen their foresight and strategy.
With late August comes a great migration for millions of people: Back to school. This term (August-December 2025), Good Judgment is pleased to bring you the 2025 University Forecasting Challenge! This event forecasting challenge will consist of at least 15 questions, covering a variety of topics. The challenge is free and open to all enrolled students, full-time or part-time. Faculty are welcome to join. Eligible students can qualify for prizes.
Do you think you have what it takes to be a professional Superforecaster®? Best forecasters on GJ Open compete for a chance to join the ranks of Good Judgment’s professional Superforecasters. Read about the selection process here.
Schedule a consultation to learn how our FutureFirst monitoring tool, custom Superforecasts, and training services can help your organization make better decisions.