Real-time fact checking

Know what's true, as you read.

A browser extension that checks whether claims are accurate in real time, using Claude with live web search. Verify text, video audio, and files, right where you find them.

Sign in with your email and start checking. No API keys, no fuss.

One extension, six ways to check

From a highlighted sentence to a whole video, get a grounded verdict with sources.

Text and pages

Highlight any passage or scan a full article. Claims are verified with web search and rated on a true to false scale.

Live video audio

Fact-check a YouTube or any video tab while it plays. The audio is transcribed and spoken claims are checked as they happen.

Documents and images

Upload a PDF, image, or text file to check the claims inside it, or ask questions grounded in the file.

Sentiment analysis

Paste comments, tweets, or reviews to read the overall mood, the positive to negative split, and the themes driving it.

AI origin detection

Check whether an image or document was made by AI, using verifiable Content Credentials where present, with an honest likelihood otherwise.

Corrections and follow-ups

False claims come with the accurate fact, and you can ask follow-up questions about any result right on the card.

Simple plans that scale with you

Start free. Upgrade when you want page scans, files, sentiment, and live audio.

Free
$0
5 checks a day
  • Highlight to Fact-Check
  • Web-grounded verdicts with sources
  • Scan Page
  • Document & Image Check
  • Sentiment Analysis
  • AI Origin Detector
  • Live Audio Fact-Checking
Start free
Max
$12/ month
60 checks a day
  • Everything in Pro
  • Live Audio Fact-Checking
  • Claude Opus, the deepest model
  • Highest daily limit, 60 checks
Get Max

Install the extension, then choose your plan and pay inside it. Cancel anytime. Payments handled securely by Stripe.

Private by design

Your check history lives only in your browser. Content you check is used only to return your result, forwarded to the AI providers that power the checks (Anthropic, and Deepgram for audio). We never sell it, and there is no ad tracking. See the privacy policy for the full picture.