Bullsift is an AI-powered Chrome extension and web app that fact-checks YouTube videos. Paste any YouTube URL to get instant AI summaries, claim extraction, slop detection, and deepfake analysis before you watch.

How does Bullsift detect AI slop and misinformation?

Bullsift uses a multi-model AI pipeline to extract claims from video transcripts, cross-reference them against trusted sources, assign a Slop Score for clickbait and AI-generated filler, and run vision checks for deepfake detection.

Is Bullsift free to use?

Yes. The free tier includes 90 Quick Sifts per month with AI summarization and slop detection. Pro ($9.99/mo) adds 50 Deep Sifts with web-verified fact-checking and community trust voting.

What is a Deep Sift vs a Quick Sift?

A Quick Sift gives you an instant AI summary, slop score, and basic claim extraction. A Deep Sift goes further by routing verifiable claims to the open web, cross-referencing multiple sources, and providing concrete verdicts with clickable citations.

Can Bullsift detect deepfakes on YouTube?

Yes. Bullsift's Vision AI analyzes video frames to detect signs of AI-generated or manipulated visual content including deepfakes, face swaps, and synthetic media. This feature is available on Pro and Power tiers.

How is Bullsift different from YouTube Community Notes?

YouTube Community Notes relies on manual user submissions. Bullsift uses a multi-model AI pipeline to automatically extract and verify claims from any video in seconds, supplemented by community trust voting from paid members who can flag misinformation and override verdicts.

Can I use Bullsift without installing a Chrome extension?

Yes. Bullsift offers both a Chrome extension for one-click analysis on YouTube and a standalone web app at bullsift.ai where you can paste any YouTube URL to get instant fact-checking, AI summaries, and slop detection.

What sources does Bullsift check claims against?

During a Deep Sift, Bullsift routes verifiable claims to the open web using multiple search strategies. It cross-references claims against news sources, scientific databases, government records, and other authoritative references, then provides verdicts with clickable source citations.

Does Bullsift work on YouTube Shorts?

Yes. Bullsift can analyze any YouTube video including Shorts. Simply paste the YouTube Shorts URL into the web app or use the Chrome extension while watching. The AI pipeline extracts the transcript and runs the same claim verification process.

What is a Slop Score?

The Slop Score is Bullsift's proprietary metric that detects clickbait, AI-generated filler content, speculation presented as fact, and content-farm patterns in YouTube videos. A higher Slop Score indicates the video contains more low-quality or misleading content.

How accurate is Bullsift's fact-checking?

Bullsift uses a multi-model AI pipeline combining multiple large language models with real-time web verification. Deep Sifts cross-reference claims against multiple independent sources and provide transparent verdicts with clickable citations so you can verify the sources yourself.

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Explainer

What Is a YouTube Fact-Checker and Why You Need One in 2026

Published March 24, 2026 · 6 min read

YouTube is the world's second-largest search engine and the primary news source for an entire generation. Yet it has no built-in fact-checking. Community Notes are limited and slow. Most misinformation spreads unchecked for days, weeks, or permanently.

A YouTube fact-checker is a tool that automatically extracts claims from videos, verifies them against real sources, and tells you what's true, what's misleading, and what's completely made up -- all before you finish watching.

Why It Matters

Scale of the problem

Over 500 hours of video are uploaded to YouTube every minute. No team of human fact-checkers can keep up.

Deepfakes are everywhere

AI-generated faces, voices, and manipulated footage are increasingly common and getting harder to detect by eye.

Speed matters

Misinformation spreads fastest in the first hours after upload. By the time a Community Note appears, millions have already watched.

Trust is eroding

Viewers are losing trust in online content. Credibility tools help rebuild confidence in what you watch.

How Bullsift Works

Bullsift is an AI-powered YouTube fact-checker available as a Chrome extension and web app. When you analyze a video, here's what happens:

Claim Extraction

Bullsift's AI reads the full transcript and extracts every factual claim, prediction, and opinion.

Web Verification

Verifiable claims are routed to the open web. Bullsift cross-references against news sources, databases, and public records.

Vision Analysis

Video frames are analyzed for deepfake indicators, AI-generated visuals, and manipulation artifacts.

Slop Score

The content is scored for clickbait patterns, AI-generated filler, and speculation presented as fact.

Community Voting

Paid members can vote on claim accuracy, flagging misinformation and building collective trust scores for channels.

Bullsift vs Alternatives

Feature	Bullsift	Community Notes	Manual Research
Automated claim extraction	Yes	No	No
Real-time web verification	Yes	No	Yes
Works on any video instantly	Yes	No	Yes
Deepfake / vision detection	Yes	No	No
Community trust voting	Yes	Yes	No
Slop score / quality detection	Yes	No	No

Quick Sift vs Deep Sift

Quick Sift (Free)

AI summary of the video
Claim extraction and categorization
Slop Score
Channel trust score
90 per month

Deep Sift (Pro/Power)

Everything in Quick Sift
Web-verified fact-checking with sources
Vision AI deepfake detection
Community trust voting
Exportable reports

Try Bullsift on any YouTube video

Get instant AI-powered fact-checks, slop detection, and credibility scores -- free.

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