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Fact-checking tools compared: which one for which job

Most lists of fact-checking tools mix up four different jobs. Sorted properly, the choice is usually obvious, and sometimes it is not us.

Fact-Check · last reviewed 2026-08-24

The short answer

Fact-checking tools fall into four groups: archives of already-checked claims like Snopes and PolitiFact, aggregators that search those archives, coverage comparers like Ground News, and on-demand verification that checks a claim nobody has looked at yet. If your claim is already in an archive, go there first, because a human already did the work.

The four jobs, and why lists confuse them

A tool can only help if it does the job you actually have. These are the four, and almost every published list mixes them:

Has someone already checked this? That is an archive. Which archive says what? That is an aggregator. How is this story being covered across outlets? That is coverage comparison. Is this specific claim, which nobody has touched, supported by evidence? That is on-demand verification. Only the last one helps with the screenshot that reached you nine minutes ago.

JobReach forWhat it gives you
The claim is probably already debunkedSnopes, PolitiFact, FactCheck.org, AP and Reuters fact-check desks, Full FactA human verdict with reasoning, written by a professional and worth more than any automated pass
Find whether any fact-checker covered itGoogle Fact Check ExplorerOne search across many archives, with links to the original rulings
Understand how outlets differ on a storyGround News, AllSidesThe spread of coverage and where each outlet sits, which is framing rather than facts
Monitor what is being claimed at scaleFull Fact AI and similar professional toolsClaim detection across broadcast, podcasts and social, built for newsrooms
Check a claim nobody has checked yet, nowwyper Fact-CheckA 1 to 10 score with an evidence chain in which each statement is either backed by a verbatim quote or marked unsourced

When you should not use us

If Snopes, PolitiFact or a wire desk already published on your claim, read that instead. A trained fact-checker who spent hours on a case produces something no automated pass matches, and their reasoning is written to be argued with. Our own articles cite Full Fact and others precisely because their work is the better source when it exists.

If your question is about framing rather than facts, a coverage comparer answers it and we do not. Whether an outlet leads with the arrest or the acquittal is not something a truth score measures.

If you need monitoring at scale, meaning every claim a politician makes across broadcast and podcasts, that is a professional monitoring product and a different category from ours.

A tool that claims to be the answer to all four jobs is telling you something about its marketing, not its engineering.

What on-demand verification adds

Archives are unbeatable and always behind. Somebody has to notice a claim, judge it worth checking, research it and publish, which takes hours at best. The claim in front of you right now is almost never in there yet, and that gap is where sharing happens.

So the useful question is not whether a machine beats a human fact-checker. It does not. The question is what you do in the hours before one arrives. What can be automated in that window is the mechanical part: gathering sources, checking that a quoted sentence really appears in the document credited with it, comparing the date of the event with the date of the post, and surfacing the strongest counter-position.

How well that holds is measured and published rather than asserted. Across 24 claims with the deciding document named in advance, the primary source was reached in 23, and 63 percent of everything returned was a primary document against 1 percent from other fact-checkers, because sources are never ranked by origin. Of 633 real citations re-fetched, 73.1 percent were verbatim on the page, and the failures are published too: 19 percent of pages block automated readers, 6.4 percent were not findable.

The honest limits of the automated route

Questions

What is the best fact-checking tool?
It depends which of four jobs you have. For a claim that is probably already debunked, an archive like Snopes or PolitiFact is best because a professional did the work. To search all archives at once, Google Fact Check Explorer. For coverage differences, Ground News or AllSides. For a claim nobody has checked yet, an on-demand tool like wyper.
Is an AI fact-checker better than a human fact-checker?
No, and the comparison is the wrong one. A human fact-checker with hours on a case produces the better result. The relevant question is what you use in the hours before that exists, which is when the claim is spreading.
Why is wyper not in most lists of fact-checking tools?
Because those lists are mostly archives and aggregators, and on-demand verification for readers is a newer category. It is also a fair signal of how young the category is: we would rather be measured than listed.
Can I trust a truth score?
Read it with the evidence, never instead of it. A score answers whether the claim is supported by the sources found. Each statement in our results tells you whether a verbatim quote backs it, which is the part you can actually audit.
Do you use other fact-checkers as sources?
Yes, when they are the best available source, and our published articles cite them. But nothing is ranked by origin: across 24 measured claims, other fact-checkers accounted for 1 percent of what our retrieval returned, because primary documents were available and better.

Check a claim and look at the evidence yourself

Free: 5 checks a day, no account needed. Every statement tells you whether a quote backs it.

Read on

Ask any fact-checker for their error rateFour claims, four published measurements, including what argues against us. How to check if a video is a deepfakeOrigin, chronology, claim and motive, in that order.