Bullsift.ai: AI Fact-Checker for YouTube, X & FB

Fact-check videos and posts on YouTube, X, Facebook, and Reddit. Get instant Sift Scores, claim verdicts, and AI slop detection.

Bullsift.ai is the AI fact-checker that lives where misinformation does — your social feeds and the videos you watch. Add a "Sift" button to YouTube, X (Twitter), Facebook, and Reddit. Click it on any video or post to get an instant credibility breakdown: a Sift Score from 0–100, AI slop detection, and claim-by-claim verdicts with linked sources you can verify yourself. ━━━━━━━━━━━━━━━━━━━━━━━━━━ WHAT YOU GET ON EVERY POST ━━━━━━━━━━━━━━━━━━━━━━━━━━ • Sift Score (0–100) — a single number summarizing trustworthiness • Sift subscores — Truth, Sourcing, Balance, Originality, Channel reputation • AI slop detection — flags clickbait, repetitive phrasing, AI-generated filler • Claim verdicts — every factual claim labeled Supported / Unsupported / Misleading / Opinion / Unverifiable • Cited sources — every Deep Sift verdict links to the news articles, scientific papers, or government records used to verify it • Summary — a one-paragraph TL;DR of what the video or post actually says • Vision check (videos) — frame-by-frame AI-generation detection on YouTube videos ━━━━━━━━━━━━━━━━━━━━━━━━━━ QUICK SIFT vs DEEP SIFT ━━━━━━━━━━━━━━━━━━━━━━━━━━ Quick Sift (free) — instant claim extraction, slop detection, and Sift Score estimate. Runs in seconds. 90 free Quick Sifts per month, no credit card. Deep Sift (Pro/Power) — verifies every claim against the open web with live search and citations. Click "Run Deep Sift" on any post to upgrade a Quick Sift to a fully verified analysis. Pro: 50 Deep Sifts/month. Power: 150/month. ━━━━━━━━━━━━━━━━━━━━━━━━━━ SUPPORTED PLATFORMS ━━━━━━━━━━━━━━━━━━━━━━━━━━ • YouTube — works on every video, including Shorts • X (Twitter) — Sift any tweet • Facebook — Sift posts on your feed • Reddit — Sift posts and threads More platforms coming based on user demand. ━━━━━━━━━━━━━━━━━━━━━━━━━━ PRIVACY-FIRST ━━━━━━━━━━━━━━━━━━━━━━━━━━ • We only analyze the videos and posts you explicitly click "Sift" on • We never read your YouTube watch history, your timeline, your DMs, or your subscriptions • Analysis results are cached so anyone checking the same content gets instant results — no extra cost, no extra data sent • EU users get a consent banner; analytics opts default to off until you accept • Your account email is the only PII we store — no tracking pixels, no third-party SDKs ━━━━━━━━━━━━━━━━━━━━━━━━━━ HOW IT WORKS ━━━━━━━━━━━━━━━━━━━━━━━━━━ 1. Install the extension and create a free Bullsift account 2. Visit YouTube, X, Facebook, or Reddit (one-time permission grant for non-YouTube sites) 3. Click "Sift" on any video or post 4. Get a credibility score, claim list, and sources — all in seconds The extension's side panel doubles as a control center: see your remaining Sift quota, recent history, and account settings. ━━━━━━━━━━━━━━━━━━━━━━━━━━ PRICING ━━━━━━━━━━━━━━━━━━━━━━━━━━ • Free — 90 Quick Sifts/month • Pro ($9.99/mo) — Unlimited Quick Sifts + 50 Deep Sifts/month • Power ($24.99/mo) — Unlimited Quick Sifts + 150 Deep Sifts/month + community moderation tools Cancel any time. Pro plans include a 14-day free trial. ━━━━━━━━━━━━━━━━━━━━━━━━━━ SUPPORT ━━━━━━━━━━━━━━━━━━━━━━━━━━ Questions, bugs, or false-positive verdicts? Email hey@bullsift.ai or report directly via the in-app "Report an inaccuracy" link on any analysis page.