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

Pick any debate, choose a side, and write your argument. Our AI scores it instantly (for Titans) or within 5 minutes (for Members). No setup needed — just sign up and start debating.

There are three tiers. Guests (Hecklers) can browse and vote. Members (Debaters) can write arguments up to 300 words, earn Caliber Points, and track stats. Titans get instant scoring, editing, 1,000-word budgets, portfolio export, and more.

Yes. Visit any user's profile and click Follow. Your follower and following counts appear on your profile.

Your argument is evaluated across four dimensions: logic (30%), evidence (30%), originality (30%), and clarity (10%). Each gets a score out of 100, and your overall score is the weighted sum. Hover over any score to see the full Argument DNA breakdown. Visit our How Scoring Works page (/scoring) for full details including the model, safeguards, and a scored example.

A radar chart showing your scores across Logic, Evidence, Originality, and Clarity. On your profile it shows your average; on individual comments it shows that argument's breakdown.

A scatter plot on your profile. Each dot is one of your arguments, plotted by Evidence (x-axis) and Logic (y-axis), colored by side, sized by score. It reveals your strengths and patterns.

A sparkline on your profile showing your score trajectory over your last 20 arguments. Upward trend = you're improving.

A real-time meter showing which side is winning. It uses three factors: community votes (25%), argument quality scores (65%), and argument diversity (10%) measured by embedding-based clustering — not by the AI grading its own summaries.

You can attach URLs to back up your claims. The AI gives credit for cited sources in your evidence score. Members get 1 citation; Titans get up to 3.

CalibRank's paid tier. The first 300 users get a $49 lifetime deal (Founding Calibrant). After that, it's $29/year. Unlocks instant scoring, argument editing, PDF export, 1,000-word budget, Silver Bullets, and public badges.

Members' arguments are scored in batches every 5 minutes. Titans see their score, DNA breakdown, and side classification the moment they submit.

Yes, once per argument. The edit is re-scored by AI and your old score is replaced. Members cannot edit.

Titans can export a branded PDF from their profile with stats, Argument DNA radar, and top-scoring arguments — great for employers, teachers, or debate leagues.

Titan-only. Gives you an extra 100 words on top of your budget in a debate. Usable in up to 3 debates per quarter.

The first 300 Titan buyers. They receive a permanent badge and the "Founding Calibrant" title — a lifetime deal that never expires.

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

Go to the Requests page and submit your topic. Others can upvote it. Founding Calibrants review and approve the most popular requests.

Yes. Founding Calibrants set an expiry date when approving. Once closed, the result is final — no more voting or commenting. Closed debates stay viewable with a "Debate Closed" badge.

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

Spot a weak claim? Challenge a specific sentence. If upheld, the original author gets a time window to submit a rebuttal defending their claim.

Each debate is seeded with AI "Steel Man" arguments. If your argument scores higher than the AI's best on the same side, you earn a "Beat the AI" badge.

Every argument passes through AI moderation. Toxic content is sanitized with emoji tags (clown-rewrite). Misinformation is flagged as disputed. Nothing is silently removed — all moderation is transparent.

Yes. Tap the Voice button below the composer to dictate your argument. Speech is transcribed live in your browser using its native speech recognition — no audio is uploaded or stored by us. After dictating, you can edit the transcript before submitting; we recommend tightening it since spoken language tends to ramble and your argument is scored on logic, evidence, originality, and clarity.

Voice input requires Chrome, Edge, Safari, or Samsung Internet — Firefox and most hardened browsers (e.g., Brave with default settings) don't support it. If the button is missing, your browser isn't supported. If you see "Microphone access denied," click the lock icon in the address bar and allow microphone permission, then refresh. On Windows, also confirm Settings → Privacy & Security → Microphone is on for desktop apps. Voice typing also won't work in private/incognito mode in some browsers.

Yes. The dropdown next to the Voice button lets you choose English (US, UK, India, Australia, Canada). The transcription model is tuned per accent — picking your own dialect noticeably improves accuracy. Your choice is remembered on the same device.

Points earned from argument quality in public debates. Higher AI scores = more points. Your total shows on your profile and the leaderboard. Private Room points are kept separate.

Ranks Calibrants by total Caliber Points from public arena debates. Private Room debates don't affect global ranking. Each room also has its own leaderboard.

Shows how often the side you argued for is winning. CalibRank checks whether your side leads the Tug-of-War across your debates. The ring on your profile shows wins, losses, and active debates.

Uniqueness badges on individual comments. Diamond = your argument is rare and unique. Pebble = several others made a similar point. Bedrock = widely shared consensus. Determined by clustering.

Profile badges earned through activity. 6 types: Pioneer (many debates), Truth Seeker (uphold challenges), Data Nerd (75+ evidence), Philosopher (75+ logic), Bedrock Builder (reinforce facts), Founding Member (early adopter). Each has 5 levels.

5 ranks per badge: Iron (10), Bronze (100), Silver (1,000), Gold (10,000), Platinum (100,000). Silver and above get a glow effect.

Members can see their own badges privately. Titans' badges are public and visible to everyone.

Public debate categories curated by CalibRank — Tech, Sports, Culture, Philosophy, Politics, and Science. Every public debate belongs to an arena.

Invite-only debate spaces for colleges, organizations, or groups. An admin creates the room, uploads member emails via CSV, and shares a join link.

Arenas are public and open to everyone. Private Rooms are invite-only. Arena debates count toward your global Caliber Points; Room debates do not.

Go to Rooms and click "Create Room." Name it, pick a slug, add an optional description. Then go to Settings to upload member emails and share the join link.

No. Room debates are isolated — still AI-scored, but points stay within the room and don't affect your global leaderboard position.

You need an invite. The admin adds your email to the room's whitelist. Open the join link, log in with that email, and you're in.

CalibRank's quarterly competition. A curated set of debates with a level playing field — every user gets 1,000 words regardless of tier, no Silver Bullets. Your scores aggregate across all Tournament debates on a single leaderboard. Top 3 win merch, badges, and bragging rights.

Regular debates have tier-based word limits (300 for Members, 1,000 for Titans). In The Tournament, everyone gets 1,000 words and no Silver Bullets. Each Tournament features multiple debate topics over the quarter, and your aggregated score across all of them determines your rank.