DebateOwl

About the tool

DebateOwl helps students and competitive debaters prepare a set motion and practice it. The case generator writes a case you can read out loud, with an opening, two to four arguments each backed by evidence, "If they say... we answer..." replies, a closing line and the sources used. Other prep modes include a case attacker that finds weak points, brainstorming, evidence factoids with real citations, an AI coach and a flowchart for mapping arguments. For practice, Crossfire runs timed question-and-answer drills and Sparring runs timed rounds against an AI opponent, with a scorecard and verdict, including voice rounds. Active Grounding research checks claims against real sources and marks anything unverified. The app supports formats such as Public Forum, Lincoln-Douglas, Policy, British Parliamentary, World Schools and Congress, works in English, Spanish and Hungarian, and exports work to Word, PDF or Google Docs. Free tools such as a debate timer, motion generator and flow sheet need no account. DebateOwl, formerly DebateLab, is made by Pi-Stack. It offers a 3-day free trial with no credit card and starter models, after which Pro costs $5 per month plus tax for higher daily limits, all 10 models including Claude Opus and Sonnet, GPT-6.1 Sol and Gemini, Active Grounding research and priority support. There is no permanent free plan.