The short version
NewsGuard is strongest when the first question is whether a news or information source has a credible publisher-level track record. FactSentinel is strongest when the first question is whether a specific claim, paragraph, citation, or source trail is supported.
Use NewsGuard when you need publisher context.
NewsGuard rates news and information websites and shows reliability signals while readers browse search, social, and websites.
Use FactSentinel when one claim needs evidence.
FactSentinel checks selected text or pasted claims and shows verdict, confidence, reasoning, model agreement, caveats, and sources.
What NewsGuard does well
NewsGuard describes itself as a reliability layer built by journalists. Its browser product shows icons next to links and lets readers hover for a quick summary or click into a detailed Nutrition Label about ownership, content, and reliability.
As of April 28, 2026, NewsGuard says its team has rated more than 35,000 news sources, with coverage designed to account for 95% of online engagement in the U.S., U.K., Canada, Australia, New Zealand, France, Germany, Austria, and Italy, plus selected outlets elsewhere.
That makes NewsGuard useful for quickly evaluating unfamiliar domains, teaching source-literacy habits, and giving schools, platforms, advertisers, researchers, and readers a consistent source-rating layer.
Where source ratings stop
A publisher-level rating does not verify every sentence the publisher has ever published. A credible outlet can still make a mistake. A weak or unfamiliar source can still link to a real primary document. A generated citation can look polished while pointing nowhere.
Claim-level checking starts narrower. It asks what exactly is being claimed, what sources support or challenge it, whether independent model reads agree, and what caveats should slow down a reader before sharing.