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CalibRank is an AI-powered debate platform where your arguments are scored on clarity, evidence, logic, and originality. The best reasoning wins — not the loudest voice.

After you submit an argument, our AI evaluates it across four dimensions: clarity, evidence, logic, and originality. Each receives a score, and your overall logic score (out of 100) is computed from these. You can hover over your score to see your Argument DNA breakdown.

CalibRank has three user tiers. Guests (called Hecklers) can browse and vote on debates without an account. Members (called Debaters) have accounts, can write arguments up to 300 words, earn Caliber Points, track stats, and earn badges privately. Titan Premium is a paid upgrade that unlocks instant AI scoring, argument editing, portfolio export, a 1,000-word budget, unlimited appeals, and public badges. Titans also approve debate requests and moderate the platform.

Titan Premium is CalibRank's paid tier. The first 300 users get a $49 lifetime deal (Founding Calibrant — pay once, keep forever). After that, it's $29/year. It unlocks instant AI scoring (no 5-minute wait), the ability to edit and re-score arguments, PDF portfolio export, a 1,000-word budget per debate, unlimited score appeals, Silver Bullets, and publicly visible badges.

Free members' arguments are scored in batches every 5 minutes. With Titan Premium, your argument is scored by AI the moment you submit it — you see your score, Argument DNA breakdown, and side classification in real time.

Yes. Titan Premium members can edit each argument once after submission. The edited argument is automatically re-scored by AI. Your old score is replaced with the new one. Free members cannot edit.

Titan Premium members can export a branded PDF from their profile containing their stats, Argument DNA radar chart, and top-scoring arguments. This is useful for sharing your debate track record with employers, teachers, or debate leagues.

Caliber Points are earned based on the quality of your arguments in public arena debates. Higher AI scores earn more points. Your total appears on your profile and the leaderboard. Points from Private Room debates are kept separate and do not affect your global ranking.

The Tug-of-War shows which side is winning in real time. It uses a three-factor score: community votes (25%), argument quality scores (35%), and argument diversity — how many distinct points each side covers and how well-distributed they are (40%). This ensures the winning side has both strong individual arguments and broad, well-rounded coverage.

If you spot a weak claim in someone's argument, you can challenge a specific sentence. If the challenge is upheld, the original author gets a time window to submit a rebuttal defending their claim.

Every argument passes through an AI toxicity filter. Toxic content — harassment, derogatory language, objectification, and profanity — is sanitized with a clown-rewrite (AI replaces inappropriate parts with emojis). Misinformation is flagged as disputed. No content is silently removed — all moderation is transparent. This keeps debates focused on ideas, not insults.

Yes! Debates can have 2, 3, or 4 sides. Multi-side debates let you explore nuanced topics where a simple for/against doesn't capture the full picture.

Go to the Requests page and submit your debate topic. Other users can upvote it. Titans review and approve the most popular requests.

These are argument uniqueness badges that appear on individual comments, not your profile. Diamond (💎 Rare Insight) means your argument is unique — few others made a similar point. Pebble (🪨 Common Echo) means several people made a similar argument. Bedrock (🏔️ Community Fact) means it's a widely shared consensus. They're determined automatically by our clustering algorithm.

Achievement Badges are earned rewards shown on your profile. There are 6 badge types: 🚀 Pioneer (participate in many debates), 🔍 Truth Seeker (successfully uphold challenges), 📊 Data Nerd (consistently score 75+ on evidence), 🧠 Philosopher (consistently score 75+ on logic), 🧱 Bedrock Builder (reinforce validated facts), and 👑 Founding Member (honorary badge for founding Calibrants). Each badge has 5 levels — the more you achieve, the higher your badge rank.

Leveled badges progress through 5 ranks as you hit milestones: Iron (I) at 10, Bronze (II) at 100, Silver (III) at 1,000, Gold (IV) at 10,000, and Platinum (V) at 100,000. For example, earning Pioneer Iron means you've participated in 10+ debates, while Pioneer Gold means 10,000+. Silver and above get a special glow effect on your badge.

Badge visibility depends on your tier. Guests don't earn badges. Members can see their own badges on their profile, but they're private — other users can't see them. Titans' badges are fully public and visible to everyone.

Founding Calibrants are the first 300 Titan Premium buyers. They receive a permanent 👑 OG badge and the honorary "Founding Calibrant" title displayed instead of "Titan" on their profile and comments — a lifetime deal that never expires.

Arenas are CalibRank-curated public debate categories like Tech, Sports, Culture, Philosophy, Politics, and Science. Every public debate belongs to an arena. Browse them at the Arenas page to find debates by topic.

Arenas are public and managed by CalibRank — anyone can view and participate. Private Rooms are invite-only spaces created by users for their own groups. Arena debates count toward your global Caliber Points and leaderboard ranking; room debates do not.

Private Rooms are invite-only debate spaces for colleges, organizations, or any group. A room admin creates the room, uploads member emails via CSV, and shares a join link. Only invited members can access room debates and the room leaderboard.

Go to the Rooms page and click "Create Room." Give it a name, slug, and optional description. Once created, go to Settings to upload a CSV of member emails and share the join link with your group.

No. Room debates are fully isolated — your arguments are still scored by AI, but the points stay within the room. Your global Caliber Points and leaderboard ranking are not affected by room activity.

You need an invite. The room admin uploads your email to the room's whitelist. When you open the join link and log in with that email, you're automatically added as a member.

Win Rate shows how often the side you argued for is winning across your debates. For each debate you participated in, CalibRank checks whether your side is leading in the Tug-of-War (scored using votes, argument quality, and argument diversity). The animated ring on your profile displays your wins, losses, and active debates at a glance.

The Argument Map is a scatter plot on your profile that visualizes all your scored arguments. Each dot represents one of your arguments, plotted by Evidence (x-axis) and Logic (y-axis). Dots are colored by the side you argued and sized by your overall score. It helps you see patterns — are your arguments strong on logic but light on evidence, or consistently well-rounded?

Argument DNA is the radar chart on your profile and on individual comments. It shows your scores across four dimensions: Clarity, Evidence, Logic, and Originality. On your profile, it displays your average across all scored arguments. On individual comments, it shows that specific argument's breakdown. Hover or tap the score badge on any comment to see its DNA.

The Score Trend is a sparkline chart on your profile showing how your argument quality has changed over your last 20 scored arguments. An upward trend means you're improving as a debater.

Yes. Titans can set an expiry date when approving a debate. Once a debate closes, the Tug-of-War result is final — no more voting or commenting. Closed debates remain viewable with a "Debate Closed" badge.

Each day, CalibRank automatically selects the most engaging active debate based on a combination of comments, votes, and momentum. It's featured on the homepage with a golden glow.

The global leaderboard ranks Calibrants by total Caliber Points earned from public arena debates. Private Room debates do not affect your global ranking. Each room also has its own isolated leaderboard visible only to room members.

Each debate is seeded with AI-generated "Steel Man" arguments for each side. If your argument scores higher than the AI's best on the same side, you earn a "Beat the AI" badge on that comment. It's a fun challenge to prove human reasoning can outperform AI.

You can attach source URLs to your arguments to back up your claims with evidence. The AI gives credit for cited sources when calculating your evidence score. Free members can add 1 citation per argument; Titans can add up to 3.

Silver Bullets are a Titan-only feature that gives you an extra 100 words on top of your word budget in a debate, letting you write longer, more detailed arguments. Titans can activate Silver Bullets in up to 3 debates per quarter.

The Crucible is CalibRank's quarterly competition. Each quarter, a single debate topic is chosen and all users compete on a level playing field — every participant gets the same 1,000-word budget regardless of tier, and Silver Bullets are disabled. Arguments are AI-scored and the top 3 finishers earn exclusive CalibRank merchandise, profile badges, and bragging rights. Crucible scores count toward the global leaderboard.

In regular debates, word limits depend on your tier (300 for Members, 1,000 for Titans). In The Crucible, every user — free or premium — gets exactly 1,000 words and no Silver Bullets. It's purely about the strength of your logic. There is only one Crucible debate per quarter.

Yes. Visit any user's profile and click the Follow button. You can see your followers and following counts on your own profile.