Speak money into existence.

Debate a stranger right now.

Get matched, argue it out, and an AI judge picks the winner.

British Parli Example rounds 1 of 8

Who the room backs for the ballot 0.0 Round running
62% 38%
70% 40%
Ballot in
Pro wins 28 – 26

Bet on your words

Debate a person or AI. Get a verdict at the end.

Live now Public Forum 3 min speeches 214 watching AI judged
No partner needed How it works

Debate the AI.

Speak out loud. It pushes back, tracks the clash, and writes your ballot.

InstantVoice15 formats
Start a voice round
The Ambassador Fund Bring Debatable to your school. Debatable's fund for growing debate, school by school. Paid and remote. Apply for the founding class
Free in beta Keep every ballot. Save cases, message debaters, earn a credential. Every round on every device. 10 free, no card.

Debate it.

Debate AI opponents or real people in timed rounds. Get an instant judge ballot at the end.

still building. updating website every day.

Founding story + community Debate it
Live beta 15 formats AI ballot on every round
Sign up with Google
Choose a format
Public Forum Parliamentary Lincoln-Douglas BP APDA World Schools Asian Parli Policy Congress Quick Clash
Debaters around the world.See the map →
Match me with a stranger →

How matching with strangers works

Live round · AI judge

A full ballot, written in seconds.

Speaker points, winner, reason for decision. AI does this well, at a fraction of what a human judge costs.

Live · 2 debaters Two debaters on a Debate it Live Round video call
Ballot · Round 1 ← Back to board
Pro wins
THBT social media has done more harm than good
Pro · You
28
Speaker points
Con · Guest
26
Speaker points
Reason for Decision

The round turns on Pro's structural-harm framing against Con's network-value defense. Pro documents declining adolescent mental health, algorithmic misinformation, and attention moving away from local institutions. Con answers with crisis coordination, diaspora reach, and small-business access.

Pro wins on persistence: captured attention does not return to local institutions, and the mitigations Con relies on do not exist yet. Con's counterfactual-access argument keeps the margin narrow at 28 to 26.

Our company philosophy

Every debate gathers public opinion.

The room votes on who moved them. That vote is a second verdict beside the AI ballot: it feeds speaker points, and it scores persuasion on people, not transcripts. One round moves one room. Thousands of rounds show what moves the public. The rooms themselves are mapped in the Debate Atlas.

An audience picking a winner. Public opinion, gathered in the open.
The Floor · Prediction market

Bet on your words.

The Polymarket of debate. Every round is a market on one question: which side will the AI judge vote for? Take a position while they are still speaking. The ballot settles it seconds after the round ends, and the earlier you called it, the more it moves your Sharp Score.

Polymarket and Kalshi logos The market model, applied to rounds instead of world events. The AI ballot is what settles every market.
Open The Floor

Play credits today. No cash value, nothing to buy, nothing to win.

Free certificate

Turn a judged round into a credential.

One judged voice round becomes a public score, a percentile, and a link anyone can check. Free.

Earn a credential
Company vision

Verbal reasoning matters more every year.

A debater speaking to a classroom audience during an in-person round.
An in-person round

AI can polish anyone's essay. It cannot show you understood it. Answering a real person, on the clock, is the skill left.

AI already does this for youEssays, applications, cover letters, research memos.

It cannot hold your case out loud, against someone pushing back, on the clock.

Live translation

Argue past the language barrier.

Your opponent arguing on camera in their own language
They speak · Español

La carga de la prueba sigue siendo suya, y no han dado ni un solo mecanismo.

You on camera reading the translated caption
You read · English

The burden of proof is still theirs, and they have not given a single mechanism.

A third debater speaking on camera in another language
They speak · 中文

你说会有伤害,但没有说明它怎么发生。请给出机制。

You on camera reading the translated caption
You read · English

You claim harm but never show how it happens. Give me the mechanism.

They argue in their language. You read yours. Translated live, both ways, in 20 languages.

Debate It is the most advanced room on the site, and the one that rewards patience. Full format, full clock, an opponent that argues back, and a written ballot at the end. Most certificates come out of a round in there. Live rounds against people count too.

Open Debate It
The community

Schedule rounds. Talk between them.

Wednesday is Spar Night, when everyone queues at once. Async rounds run all week. Anyone can put another time on the board.

The room

Somebody is always up for a round.

Post a motion, take a side, and get a ballot when the clock runs out.

Find an opponent
Live ranks · AI-judged

The leaderboard.

Live rounds against people and rounds against the AI both score. When the ballot comes back, your speaks land on the cross-format leaderboard. Best entry per debater, nothing else.

The leaderboard

Ranked across every format.

BP sits next to APDA sits next to PF. The ballot is written by the same judge either way, so the scale means the same thing in every row.

See the full leaderboard →
Streamers

Put the round on stream.

Chat picks the motion, you argue it live, and the AI judge posts the ballot on screen. Half your chat will disagree with the call. That is the content.

Set up the stream judge

Already streaming debate? See how it fits together.

Reviews

From the circuit

The real gap between circuits isn't talent, it's access to quality practice. Debatable closes it. The AI argues back at full strength, and the ballot tells you exactly where the round was won or lost.
Mukudzeiishe Madzivire Captain, Zimbabwe World Schools Team · Columbia University
Proof that AI can sharpen critical thinking rather than replace it. You can tell how much thought went into every layer, from case generation to the objectivity of the judging.
2025 Public Forum National Champion NSDA Nationals
In four years of British Parliamentary, I'd never seen a tool able to summarize, refute, and analyze high-level argumentation until I used Debatable. It would have made a real difference in my prep for international majors.
Arjun Raman WUDC Octofinalist · Princeton IV finalist
In a world where we can outsource our thinking to AI, we need more tools to keep us sharp. Debatable is the chess.com of debate.
Pratyush Sharma Debater, University of Chicago
FAQ

Common questions

Short answers. If something's not here, the last one routes to a real inbox.

What is this website?

A sparring partner with a clock and an opinion. Pick a motion and a side; the AI takes the other and argues.

You speak against the clock. It interrupts with POIs. At the end an AI judge writes the verdict: who won, why, a score per speech.

Fifteen formats. Fourteen languages. Free in beta.

Is it actually free?

Free in beta. One round without an account, 10 signed in with Google. No card.

The numbers on /pricing are the post-beta plan, public so you know what is coming. School or team access: email aidandavidhollinger@gmail.com.

Will it argue back, or just hallucinate arguments?

It argues, it does not fabricate. It presses soft claims, asks for warrants, and tells you when your logic collapses. It will never invent studies, cards, or tournament lore.

The harder problem is the opposite: it can sound too complete, missing the texture of a real round.

Isn't this just another AI debate tool?

Most hand you a wall of generic text. No clock, no format, no judge.

This runs a live round: a motion, a side, a clock that does not pause. It takes POIs in WSDC, reads at Policy speed, stays impromptu in APDA, then writes a real ballot.

It still says wrong things. Catching them is the drill.

Can I debate in another language?

Fourteen. English, Spanish, French, Portuguese, Mandarin, Arabic, Hindi, and more. Switch from the language pill and the AI argues, takes POIs, and writes the ballot in whichever you pick.

Never debated. Where do I start?

Quick Clash. Three-minute rounds, no rules to memorize. You take a side, the AI takes the other, the clock runs.

When that feels easy, /learn covers each format with rules, sample topics, and how judges score.

Do I need to sign up?

Not for the first round. After that, sign in with Google to save ballots across devices and switch on style learning, where the next opponent is biased against your habits.

Google only. No passwords, no marketing list.

Can my school get access for the whole team?

Yes. Team is $50/year after beta, built for clubs, classrooms, and shared program use. /schools has the longer pitch for coaches.

Running 50+ debaters? Email aidandavidhollinger@gmail.com.

For competitive debaters
Which formats?

Asian Parliamentary, WSDC, British Parliamentary, APDA, Public Forum, Lincoln-Douglas, Policy, Student Congress, MUN, plus Quick Clash for warmups.

Each runs its own prompt. WSDC and BP take POIs, LD goes framework-first, Policy spreads tagged cards, APDA stays impromptu.

Is using this to prep for tournaments cheating?

No.

What would be cheating: running it mid-round at a live competition, or passing AI-written case copy off as your own original prep.

How long is a round?

You pick. Quick Clash is three minutes. A full APDA round is about 45, BP about 60. Stop mid-round and it counts as practice.

Something else?
Have a question the FAQ didn't answer? Send it in feedback Book a call with the founders
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Thirty minutes, on the record. Tell us what is working, what is broken, and what would make you stay.

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Low volume. Debatable updates only. Add format and skill preferences · Privacy