AI practice partner
Practice against
anyone.
AdversaryAI is a sparring partner that never gets tired and never lets a weak answer slide. Debate a motion, rehearse a job interview, or negotiate a deal — by voice or text — and get scored like an athlete after every session.
3 sessions free. No credit card to start.
How it works
Three steps to sharper thinking
Pick your mode
Choose from ten practice modes — debate sparring, job interviews, negotiations, historical figures, rap battle and more. Set the scenario and the difficulty.
Practice by voice or text
Argue out loud with natural voice conversation, or type if you prefer. Your opponent pushes back in real time — cross-examining, probing, and refusing to let sloppy thinking pass.
Get coaching scores
Every session ends with detailed scores: argument strength, evidence, rebuttal quality, and composure — plus exactly where you lost points and how to win them back next time.
Practice modes
Eleven arenas. One goal: better thinking.
Whatever you're preparing for, there's a mode built for it. Each one sets the scene, plays the other side, and scores you like a coach.
The Public Debate Arena
Watch real users spar against ruthless AI opponents in live philosophical and high-stakes debates. Listen to full voice replays, inspect the AI Judge's official rubric scores, and vote on who won.
Pricing
Pay for rounds, not promises
Start free. Upgrade when you're hooked. Credits roll over and never expire.
One-time round packs
One-time purchase. Credits roll over and never expire. Stack them with any plan.
FAQ
Questions, answered
What is AdversaryAI?
AdversaryAI is an AI sparring partner. You pick a practice mode — debate, job interview, negotiation, and more — then argue your case by voice or by text. The AI pushes back in real time, and when the session ends you get detailed coaching scores on your argument strength, evidence, rebuttals, and composure.
How does a session work?
You choose a mode and a scenario (anything from "AI should be regulated" to a mock interview for a product role), pick your opponent style, and set the difficulty. You choose your match length — a 3-round quick spar, a 6-round bout, a 10-round deep debate, or open freestyle — and tap End & Grade anytime to receive a full AI scorecard.
Do I need a microphone?
No. Voice sessions need a mic, but text sessions work with just a keyboard — same opponents, same scoring. Many people start with text and switch to voice once they're warmed up.
Is there a free trial?
Yes — your first 15 sparring rounds are free, with full access to every practice mode and voice or text. No credit card required to start.
What does it cost after the trial?
Debater is $12/month for 300 rounds, Coach is $29/month for 1,000 rounds plus coaching analytics, and Champion is $49/month for 2,500 rounds with our smartest debate brain (DeepSeek V4 Pro) and photorealistic 3D avatars. Prefer one-off? Round packs cost $9 for 100, $19 for 250, or $39 for 600 rounds — and credits roll over and never expire. School and team licenses are $6 per seat per month (300 shared rounds per seat).
Can I cancel anytime?
Yes. Monthly plans cancel in one click and you keep access until the end of your billing period. Any unused rounds in your wallet stay on your account — they never expire.
Ready when you are
Your first opponent is waiting.
Three sessions. Free. No excuses left.
Start free trial