Pricing

The free tier stays free. Three checks a day on this site, ten calls a day through the tool, no account, no key, no card. If that covers you, nothing here is needed.

Beyond that, two prepaid packs. They contain exactly the same checks. The larger one costs less per check because committing more is worth more to us — nothing is withheld from the smaller one, and nothing ever will be. One product, two commitment shapes.

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Pipeline volume: ask. Checking more than a pack a month? Write to hello@holoweave.org and we will meter it against a monthly key instead. There is no bigger button here because there is no bigger product — only a different way to pay for the same checks.

What every pack contains

Before you buy — your right of withdrawal. A pack is digital content delivered immediately: your key works the moment you pay. By completing the purchase you expressly request immediate performance and acknowledge that you thereby lose your 14-day right of withdrawal once delivery has begun. Unused checks in an unused pack can still be refunded on request — write to hello@holoweave.org.

The grounding pass — in development, included, and honest about both

A real run, so you can judge it before paying. Recorded 2026-08-08 against the Wikipedia article on HTTP. Not a mock-up and not a live demo — this is output the service produced, pasted unedited. It cost 6 cents of model time to generate.

The document given to it contained one invented sentence and one true one:

HTTP was standardised by the Bavarian Postal Telegraph Bureau
under chancellor Uhlenbeck in 1974. See <wikipedia link>

HTTP is a stateless request-response protocol underlying the
World Wide Web. See <wikipedia link>

What came back:

document verdict : CONTRADICTED
                   (a document is only as good as its weakest claim)

claim 1 : CONTRADICTED
  why   : The source states HTTP was developed by CERN, IETF, and W3C and introduced in 1991, not standardised by a 'Bavarian Postal Telegraph Bureau' in 1974.
  source: "Developed by Initially CERN ; IETF , W3C Introduced 1991 ; 35 years ago ( 1991 )"

claim 2 : SUPPORTED
  why   : The source explicitly describes HTTP as a stateless request-response protocol underlying the World Wide Web, matching the claim.
  source: "HTTP is a stateless application-level protocol and it requires a reliable network transport connection to exchange data between client and server."

Note what it did not do: it did not convict the true claim, and it did not merely disagree with the false one — it quoted the passage that contradicts it, so you can check our work rather than trust it.

Every pack can also run a grounding pass: we fetch the source your document cites and compare the claim against what that source actually says. Add ?ground=1 to the paid endpoint. It costs no extra checks — one check is one document either way.

It is under development, and we would rather say so than let you find out. The core of a hallucination checker is live today: it takes your document, tests its claims against ground that is not the claim itself, and hands you a verdict with the evidence it rests on. What is still growing is how hard it convicts and how much of a source it can read — strength and coverage, not the thing itself. What it already does, it does carefully:

The free tier on this site remains pure parsing: no model reads your text there.

Seller and legal details: Impressum · Privacy. Prices are final; no VAT is added at checkout.