AI Fact Checker — Is This Actually True?
Paste any claim, headline, or post. Get a truthfulness score from 1–10 with cited sources and a debate trail you can verify yourself.
Or text the claim to Lenz on WhatsApp
Why people verify claims with Lenz
- Headlines twist context — A study said one thing, the headline says another. Verify what the underlying source actually shows.
- Friends forward fake news — Group chats are infested with viral half-truths. Lenz checks the claim against real sources in about a minute.
- AI tools sound confident but get it wrong — ChatGPT and Gemini answer with conviction even when they’re hallucinating. Lenz cites its sources so you can check the work.
- Google gives you 5 tabs and an opinion — You wanted an answer, you got a search results page. Lenz reads the sources for you and shows what they actually say.
How Lenz verifies a claim
- Paste the claim — A headline, a social post, a friend’s claim. Anything specific you can verify against evidence.
- Lenz researches it — Multiple independent sources searched in parallel, evidence collected pro and con.
- AI models debate — Two AI advocates argue opposing sides. Then three independent expert models score the evidence.
- See the verdict — A 1–10 truthfulness score, a conclusion label, and every cited source. Verify the verification.
The whole process typically takes about a minute or two. Read more about how Lenz verifies claims.
What people verify on Lenz
News headlines
Did the senator really say that? Did the study really show that? Verify the claim against the underlying evidence.
Health & science claims
Cancer cures, miracle supplements, viral health advice. Lenz checks the evidence against peer-reviewed research and authoritative sources.
Things you read on social media
Forwarded WhatsApp messages, viral TikToks, Twitter posts that sound too good (or too bad) to be true. Verify before you share.
Recently verified
A British Airways cabin crew member named Aisha Mensah Clark was arrested at Heathrow Airport Terminal 5 staff customs for smuggling £2.4 million in cash.
AI coding tools do not significantly improve real-world software developer productivity as of March 15, 2026.
The government of Iran stated that it will only negotiate with Barack Obama and not with other United States officials or administrations.
Browse the full library of verified claims.
Frequently asked questions
What does the truthfulness score mean?
Lenz scores every claim from 1 to 10 based on how strongly the
available evidence supports it. 9–10 is True, 7–8 is
Mostly True, 4–6 is Misleading or partially supported,
1–3 is False. Each score comes with a written conclusion and
the sources it relied on, so you can verify the verification.
Is the AI fact checker free to use?
Yes. You get 10 free verifications per month, no credit card
required. Plus and Pro plans unlock more if you need them.
How is this different from ChatGPT or Google?
ChatGPT gives you a confident answer with no sources. Google gives
you 5 tabs and an opinion. Lenz researches the claim across
independent sources, debates the evidence with multiple AI models,
and shows you the full reasoning trail and citations behind the
verdict.
How accurate is the verdict?
Accurate within the limits of what state-of-the-art AI and the available sources can
determine. Lenz shows its work, names the sources, and is honest
about uncertainty. A score of 6 with “Mostly True — but
the study was small” is more useful than a confident binary
verdict. Read about why Lenz exists and the
choices behind the process.
What kinds of claims work best?
Specific factual claims with verifiable evidence: news headlines,
statistics, health and science claims, historical statements, viral
social posts. Subjective opinions and predictions about the future
don’t have evidence to verify against.
Can I share the result?
Yes. Every verification has a public page with the verdict, score,
and sources. Share the link in a group chat, on social media, or
with anyone who asked the same question.
Stop guessing. Start verifying.
Paste any claim, headline, or post. Get a sourced verdict you can trust and share.
Verify a claim now