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 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: 500 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 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 500 AI credits a month, with no credit card.
Popular fact checks
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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: US Doomsday Prep, Iran Strike, and Fortress Plan Analyzed This fact-check analyzes a video claiming the US military is preparing for a 90-day doomsday scenario after attacking Iran. It finds the video mixes verified news stories about military exercises (Fortress, Operation Dragon Covenant) with misleading speculation, unverifiable conspiracy theories, and fear-mongering. While some events like the UK's 'Be Ready' campaign are real, the narrative of an imminent nuclear attack and global control is unsubstantiated.
Fact Check: Tucker Carlson's Claim About Netanyahu Pressuring Trump for Iran Nuclear Strike Analysis of Tucker Carlson's claims regarding Benjamin Netanyahu allegedly urging Donald Trump to launch a nuclear strike on an Iranian mountain facility. Most claims are unverifiable based on available evidence, and several key assertions are misleading or unsupported.
Sam Altman Fact Check: AI Hype, Misunderstandings, and Personal Transformation This fact check analyzes a podcast interview with OpenAI CEO Sam Altman, focusing on his personal journey, company decisions, and views on AI. While Altman's claims about company culture and market share are generally credible, several statements about AI capabilities and historical framing require clarification. Overall, the interview scores moderately high on credibility, with most factual claims verified or benignly unverifiable.
Fact Check: Time Travel Stories Project Pegasus Paul Dienach Chronovisor This fact-check analyzes three anecdotal time travel claims featured in a video: Project Pegasus, Paul Amadeus Dienach's chronicles, and the Chronovisor. All three rely on unverifiable personal testimonies or pseudoscientific premises without credible evidence, earning a very low credibility score.
Fact Check: Dokument o Jakubu Jáhlovi – Obvinění, svědci a reakce médií Analýza faktické přesnosti druhého dokumentu o kauze Jakuba Jáhla v Tanzánii. Video obsahuje řadu neověřitelných a jednostranných tvrzení, přičemž celkové skóre je 30, tedy velmi nízká důvěryhodnost. Klíčová obvinění nebyla nezávisle potvrzena a celý film postrádá vyváženost.
Fact Check: YouTube's Claims About Alatrists, Tanzanian Ambassador, and Nanoparticle Fertility Risks This fact-check analyzes a transcript in which the speaker claims the Alatrist organization, linked to Trump allies, is pushing false narratives about a Tanzanian case and that children born after 2020 face universal infertility risks from nanoplastics. Our analysis reveals the fertility claim is unverifiable and highly misleading, while the Alatrists’ portrayal draws on verifiable media reports. The video overall mixes credible sourcing with speculative and unsubstantiated assertions, earning a mixed credibility score.
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