Free YouTube video fact checker
Paste a YouTube link. Get every factual claim checked, a 0–100 credibility score and the reasoning behind it, free, with no signup.
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Every claim listed
Statistics, assertions and statements of fact pulled from the video.
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A verdict per claim
Verified, misleading, false or unverifiable, with the reasoning.
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A credibility score
0–100 for the whole video, so you can judge it at a glance.
This tool gives you the fact check. LunaNotes gives you the rest.
LunaNotes is an AI note-taking app: bring a video, a PDF, an audio file, a meeting or your own writing, and it becomes a note you can edit, study, revise and ask questions of. The free tool stops where that work starts.
A structured note, not a wall of text
Headings, hierarchy, and the details that matter — editable the moment it lands, and searchable forever after.
A diagram of how it connects
Turn the note into a concept map or flowchart. The relationships prose hides become obvious.
Flashcards that test your material
Generated from your own note, so revision starts from something you've already processed.
Free plan: 1,000 AI credits a month, 5 diagrams, 5 flashcard decks. No credit card.
Frequently asked questions
How do I fact check a YouTube video?
Paste the video's link above and press Fact check. The AI reads the transcript, pulls out the factual claims and checks each one. You get a verdict for every claim and a credibility score for the video.
What does the credibility score mean?
It runs from 0 to 100. Above 70 is generally credible, 40 to 70 is mixed, and below 40 means several claims are questionable or false.
How accurate is an AI fact check?
Treat it as a starting point, not a final verdict. AI can be wrong about recent events and niche topics, so check the claims that matter to you against primary sources.
Can I get the report in another language?
Yes. Pick one of 12 languages under the link and the analysis is written in it.
Is it really free? Do I need to sign up?
Yes, it's free, and no. Paste a link and you get the fact check without an account, an email address or a credit card.
Which videos does it work with?
Any public YouTube video that has captions, either the creator's own or YouTube's auto-generated ones. Private, members-only and age-restricted videos can't be read, and a video with no captions at all has nothing to work from.
What is LunaNotes?
LunaNotes is an AI note-taking app. You bring a video, PDF, audio file, meeting or your own writing, and it gives you an editable note plus diagrams, flashcards and an AI chat built from it. This tool runs one step of that on its own. The free plan includes 1,000 AI credits a month, with no credit card.
Popular fact checks
Fact Check: April 2026 Regulus-Sphinx Alignment and Biblical Prophecy This fact-check examines the claim that the star Regulus will align with the Sphinx's gaze at Easter 2026, signalling a significant spiritual or prophetic event as proposed by Chris Bledso. We evaluate the astronomical accuracy of the claimed alignment, the biblical connections, and warnings about deception in prophecy.
Fact Check: April 2026 Rapture Predictions and Related Claims This video makes multiple prophetic and biblical claims prophesying an imminent rapture event around April 4th to 5th, 2026, linking various visions, interpretations, and speculative timelines. Our fact-check finds that these claims are unsupported by credible evidence or mainstream religious scholarship and involve unverifiable personal revelations and misinterpretations of historical and biblical texts.
Fact Check: Claims About Noah's Ark Discovery on Turkey's Highest Peak This fact-check examines the sensational claims of an alleged Noah's Ark discovery on a Turkish mountain peak, analyzing the archaeological, scientific, and biblical assertions made. Our investigation finds no credible evidence supporting the extraordinary details presented, many of which contradict established science and historical knowledge.
Fact Check: Prophetic Claims and the Essene Calendar Explained This video presents claims about the prophetic significance of the Essene calendar, its connection to biblical prophecy, and recent historical events. While some historical facts about the Dead Sea Scrolls and Jewish history are accurate, the prophetic interpretations and calendar correlations remain speculative and unverified by mainstream scholarship.
Fact Check: Zoink's Record Breaks and Impossible Levels in Geometry Dash This fact check analyzes the claims about Geometry Dash player Zoink's achievements, including his record completions of notoriously difficult levels such as Booambama, Exasperation, and Silent Circles. While most accomplishments verify with community data and documented runs, some details on attempts and timelines require cautious interpretation.
Height Growth Fact Check: Nutrition, Exercise, and Sleep Truths This fact check analyzes claims about human height determination, focusing on genetics, nutrition, exercise, and sleep. While many claims align with scientific evidence, some statements are oversimplified or lack nuance. We provide a detailed verification of each assertion with supporting sources.
Latest fact checks
Fact Check: 'जेल भरने' के दावे और संविधान की लड़ाई का सत्यापन इस फैक्ट-चेक में वीडियो के मुख्य दावों का विश्लेषण किया गया है, जिसमें 'जेल भरने' की चुनौती और डॉ. भीमराव अंबेडकर के बलिदान के संदर्भ शामिल हैं। वीडियो में किए गए दावों की सत्यता और संदर्भ की जांच की गई है।
Fact Check: AI Game Mods, Vibe Coding, and the Rise of AI-Generated Software This fact-check analysis examines a video's claims about AI-generated game mods, 'vibe coding', and the broader impact of AI on software development. The video makes several factual assertions about how AI tools are used, the performance of AI-generated code, and the motivations of companies like Epic Games. We assess the accuracy of these claims, separating technical reality from opinion and hyperbole.
Fact Check: John's Claimed 'Top AI Tools' for 2026 – Mac Bias & Cloud Alternatives This fact-check analyzes a video transcript where John asserts that using a Windows computer or typing in 2026 severely limits AI capability, while recommending specific tools (Orca IDE, Claude Code, Codex, Grok, Hermes, Whisper Flow, Obsidian). We find that many claims are factually inaccurate or misleading, particularly regarding hardware requirements and tool functionality. The overall credibility is low due to unsubstantiated generalizations and a self-serving narrative.
Fact Check: Linear Regression in Ultrasound Fetal Weight Estimation Statistics This educational video on linear regression is factually accurate and provides a clear, correct explanation of regression concepts. It demonstrates strong credibility with over 90% of claims verified, though minor contextual precision issues exist in the explanation of R-squared and the baseline interpretation.
Spark Introduction Fact Check: Big Data Processing Framework Analysis in Tamil This video provides an educational introduction to Apache Spark, covering its framework, prerequisites, and integration with Hadoop ecosystem. The content is generally accurate and consistent with standard big data concepts, with minor clarifications needed on some claims.
Fact Check: DMT Entity Contact and Alien Intelligence Theories Analyzed This fact-check examines claims from a video about extended DMT experiences, including plans to communicate with entities using math problems and testing shared reality between users. The analysis finds the core research concepts are based on real studies but contain speculative leaps and unverified assertions about alien intelligence and shared trip experiences.
More free tools
Same idea, different output. All free, all built on LunaNotes.
- AI notes generator Paste text or upload a PDF and get structured study notes: headings, key terms and takeaways. Nothing you paste is published.
- Transcript & summary Paste a video link and get the full transcript plus a structured AI summary — headings, key points and takeaways instead of a wall of text.
- Timestamps & chapters Break a video into chapters with clickable timestamps and a short description of what happens in each one.
- Subtitle downloader Download a video's captions as SRT, VTT or plain text — the timed subtitle file, ready to edit or re-use.