The education platform that makes teaching, practicing, and assessing argumentation skills engaging and accessible— from debate teams, to classrooms, to underserved communities.
Our Partners
Debate on demand with your friends or community, or learn how to debate with our AI.
Replacing essays with debates to assess student comprehension while reducing cheating and improving class engagement
Almost every teenager loves to argue
We make debating accessible so they can do just that
Building your future
Debate creates successful People
Debating improves critical thinking, helps students understand what the world is like beyond their own, makes them more confident people, and teaches them how to understand opposing viewpoints.
90%
see significant improvements in their critical thinking ability
88%
can present for 5-minutes with with only 60 seconds of preparation thanks to their debate experience
3x
more likely to have leadership roles in their careers
70%
more likely to graduate college
Cosmos For Educators
The cheat-proof alternative to written assessments
Enable students to debate source material with AI guiding, moderating, and giving feedback on discussions
Improve
How you teach argumentation frameworks
Teach Introduction-Body-Conclusion and Claim-Evidence-Reasoning through debate. Our AI gives students feedback to students after every debate.
Engage
Humanities & social science students
Instead of lecturing students, 10 minute long 1v1 debates make reviewing ideas in source material fun and competitive.
Lighten
Teacher workload
Sit back while your students keep each other engaged while Cosmos tracks their progress and reports any issues.
Learn
Your students strengths & weaknesses
Get class summaries and insights on what ideas your students focus on, how well they understand source material, any misconceptions your students have, and what your students could do to improve.
Improve
How you teach argumentation frameworks
Teach Introduction-Body-Conclusion and Claim-Evidence-Reasoning through debate. Our AI gives students feedback to students after every debate.
Engage
Humanities & social science students
Instead of lecturing students, 10 minute long 1v1 debates make reviewing ideas in source material fun and competitive.
Reduce
Teacher workload
Sit back while your students keep each other engaged while Cosmos tracks their progress and reports any issues.
Learn
Your students strengths & weaknesses
Get class summaries and insights on what ideas your students focus on, how well they understand source material, any misconceptions your students have, and what your students could do to improve.
Cosmos For Educators
Self Moderated & Competitive Class Discussions
Enable students to debate source material with AI guiding, moderating, and giving feedback on discussions
Cosmos For Debaters
Competitive debate at the click of a button
Debate on demand with your friends, our AI, or the world.
Learn
How to think critically
Easily learn how to debate by practicing with our AI
Get in-depth feedback after every debate
Play
Seriously fun
Private contests in BP, WSDC, and Bullet debate styles. Concoct personalized subjects. The foremost concern of Cosmos is user safety.
Compete
Globally with rankings and ELO
See how you stack up against the rest of the world. Compete in matches and tournaments to improve your rankings.
Win
The world's most prestigious competitions
We host the world's largest debate competitions, with human judging, for you to compete in.
FAQ
Answering your most burning questions
Did we forget something? Contact us below
How do I stay up to date with Cosmos
Can I be an ambassador for Cosmos?
Is Cosmos safe for my child or student to use?
If I am a school or educational organization, can I get a subscription for a larger student body?
