Independent fact-checking

Check the claim. Check who's making it.

Paste a post from X, a news article or a claim. We research it from both sides, check every quote against the page it came from, and tell you whether it's Confirmed or Refuted, with the sources behind it.

  • Posts on X
  • News articles
  • Claims
  • Accounts

Free plan: 100 credits a month. The check starts in the app, once you press its button.

ExampleFrom our demo, about a fictional country

Posted by @DemoValdoriaMoD

Our forces have fully secured the Port of Kessel. Not one civilian was harmed during the operation.

The port was taken, but the claim that no civilians were harmed is contradicted by hospital records and UN monitors.

  1. Refuted Contradicted by the record

    No civilians were harmed during the Valdorian military operation at the Port of Kessel.

    • UN Valdoria MissionPrimary recordContradicts
      At least 14 civilians were injured during the operation at the port.

      Quote found on the page

    • Kessel TribuneFirsthandContradicts
      We admitted civilians with blast injuries throughout the day.

      Quote found on the page

    • Valdoria Ministry of DefenceThe government's own wordSupports
      No civilian was harmed in the course of the operation.

      Quote found on the page

  2. Confirmed Confirmed by independent sources

    Valdorian forces have taken control of the Port of Kessel.

    Two independent sources confirm it

How it works

Two researchers, one judge, and rules they can't bend.

We don't look up what someone else concluded. Every claim is investigated from scratch, and each step is built to catch the mistakes of the others.

  1. 01

    Separate the claims

    The piece is split into neutral statements of one fact each. Who said it is removed, so a reputation can't sway the research.

  2. 02

    Try to prove it

    One researcher looks for the strongest evidence that each claim is true, without seeing what the other finds.

  3. 03

    Try to disprove it

    Another tries to break it: finds the original source, checks numbers and dates, looks for recycled footage, and searches in the local language and among outlets with different stakes.

  4. 04

    Weigh both files

    A judge who did no research grades every source, and can set evidence aside only by giving a reason. Then our evidence rules decide whether the result stands.

Our rules

Enforced in code, not left to judgement.

The research uses AI, and AI makes mistakes. These rules are checked by our own code on every result, so a confident answer can't slip past them.

  • 01

    Whoever makes a claim has to prove it

    If neither the piece nor our research proves it, it's Refuted, and we say it wasn't proved rather than shown false.

  • 02

    Nothing is confirmed untested

    If the attempt to disprove a claim didn't run, the claim isn't rated.

  • 03

    Every quote is on the page

    We check that the exact words appear on the page they're cited from, and drop the citation if they don't.

  • 04

    Origins, not articles

    Ten outlets repeating one wire story or one official statement count as one source.

  • 05

    A report about a record isn't the record

    An article citing a law, a dataset or an official document doesn't count unless the original is opened.

  • 06

    Our failure is never your verdict

    A claim is never rated false because our research failed. We try again, or give no result rather than a guess.

What you can check

Posts, articles, claims, and the accounts behind them.

  • Posts and articles

    Every claim in a piece gets a verdict of its own. We also show whether the post asserts a claim, passes it on or debunks it, so a verdict on a claim is never mistaken for a verdict on the poster.

    RefutedConfirmed
  • Accounts

    See how far to trust an account, Trusted, Mixed record or Low trust, from the record of what it posts, and who it's affiliated with, from public records.

  • Pro

    Narratives

    See what's being said about a topic on X: its storylines, the outlets carrying them, and every claim in them checked.

    The Port of Kessel
    • The port was taken without casualties
    • Civilians were injured in the fighting
    • Rebels still hold the northern quay

Pricing

The same verdict on every plan.

Paying gets you more detail, more credits each month and professional tools, never a different answer.

  • Free

    For checking something you just saw

    $0 / month

    Start free
    • 100 credits a month
    • Confirmed or Refuted on any post, article or claim
    • Account trust level and affiliation
    • The top two sources behind each verdict
  • Premium

    For people who follow the news closely

    $12 / month

    Get Premium
    • 1,500 credits a month
    • Every claim in a post, checked one by one
    • All sources and exact quotes, and how we tried to disprove each claim
    • Account track record and affiliation citations
    • History and saved checks
    • Re-check anything for the latest evidence
  • Pro

    For journalists, newsrooms and press agencies

    $79 / month

    Get Pro
    • 10,000 credits a month
    • Batch checks
    • Private deep checks that stay out of the shared cache
    • Your own trusted and blocked source lists
    • Follow a claim and see when its verdict changes
    • Exportable evidence dossiers
    • Editorial notes on every check
    • Narrative analyses of any topic on X

Each plan's credits renew every month. You can buy more at any time, on any plan, and those never expire. Cancel any time.

FAQ

Questions, answered.

What can I check?

A post on X or a news article, by pasting its link, any claim you type, or an X account, by its @handle. On Pro you can also analyse what's being said about a topic on X.

How long does a check take?

Usually a few minutes. A post with many claims takes longer, because each claim is researched on its own. You can watch the research as it happens.

Why only Confirmed or Refuted?

Because whoever makes a claim has to prove it. If the evidence doesn't, it's Refuted, and we tell you whether it was contradicted by the record or simply not proved. Opinions, jokes and predictions get no rating, because they can't be true or false.

Can it get things wrong?

Yes. The research uses AI, and AI makes mistakes. That's why two researchers work separately, a judge weighs both, every quote is checked against its page, and every verdict shows its sources so you can check them yourself. If you think a result is wrong, you can ask us to review it.

What are credits?

Checks are paid in credits, according to the research each one needed: a single claim uses far fewer than a long post. Every plan includes credits each month, and credits you buy never expire.

Do you track me?

No. We don't use advertising or analytics trackers, and we don't send marketing emails. This site remembers nothing about you except a language or theme you pick.

Which languages?

Second Source is in English and French, and every result can be read in both.

See for yourself.

Paste something you saw today.

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