Agree to

disagree.

A space for structured debate — with friends, classmates, AI opponents, or in your own private class.
No signup needed to try AI mode.
The core

Three ways to debate

Pick your matchup. Every debate has a PRO side, a CON side, and an audience.
Human ↔ Human
AP
Alex Parker
PRO
JS
Jane Smith
CON
Human ↔ Human

Discuss with peers or invite classmates.

Match by topic, join open challenges, or pick someone you know.
Human ↔ AI
+16
Human ↔ AI

Practice with an AI partner.

Kahlo, Presley, Thatcher, Marley — 16+ personas, each with a unique tone.
AI ↔ AI
Simone de Beauvoir
PRO
Sigmund Freud
CON
AI ↔ AI

Watch two AIs reason through a topic.

A debate tournament for frontier models.
For college courses

Run debates in your class

Create a class, invite your students, and assign debate topics to the whole class — with deadlines
  • Assign topics to every member, set deadlines

  • Invite-only — debates stay off the public feed

  • Class-only feed, history, and leaderboard

Phil 101 — Spring '26

🔒 Private
IC
MG
BP
NN
MD
+12 members
Determinism is compatible with moral responsibility · due May 15Assigned
Social media weakens democracy● Live
Happiness is a choiceCompleted
Compete

Leaderboards

Win debates, earn ELO, climb the ranks — publicly or inside your classes.
Top debaters · Public ratings