DoubleChecks - AI Fact Checker

Check answers from ChatGPT, Claude and the web. See a clear verdict, explanation and sources before you trust or share them.

Not sure whether an AI answer or online claim is true? DoubleChecks helps you check it before you trust it, share it or act on it. It asks several AI systems to examine the same claim separately, compares the sources they find and shows you what the evidence supports. Check it where you found it: - In ChatGPT or Claude, choose Double-check beneath an answer. - On another website, turn on DoubleChecks for that site and select the text you want to check. - Or paste an answer or claim into the extension. DoubleChecks gives you: - A clear verdict: Accurate, Needs caution or Inaccurate. - A short explanation of why. - Links to sources so you can review the evidence yourself. - What each AI found, including where they agree or differ. Your privacy: Only the text you choose to check is sent. DoubleChecks does not send your browsing history or the rest of a conversation. We do not sell your data. Free to try: Start without creating an account or entering a credit card.