Contradiction check Sarsa Formation

Find the contradictions in your document.

Paste it or upload it. We find every pair of passages that cannot both hold, quote both side by side, and say why. How many there are, and the most serious one, are free.

Check a document No account. Deleted after 24 hours.
What each one looks like
A Paragraph 4 · Payment
Invoices are payable within 30 days of the invoice date.
B Paragraph 31 · Summary
Payment is due within 45 days of the invoice date.

One passage gives 30 days to pay and the other 45, so a late payment is on time under one and overdue under the other.

0 of 15,000 words

Free: the count and the most serious one. Up to 15,000 words. We delete your document and its results 24 hours after upload. A scanned PDF has no text to read: paste the text instead.

What you getThe most serious one free. All of them for €4.

Free
€0
  • How many contradictions we found.
  • The most serious one in full: both passages side by side, where each one sits, and why they cannot both hold.
One document
€4
  • Every other contradiction we found.
  • A repaired copy: for each one, pick which passage stands or take our suggestion, and download the corrected text with every change marked.
  • A second check of the repaired copy, at no extra charge, showing what was not found again and anything still there.

One payment, no account, no subscription. No VAT is added. Write to us within 14 days of paying and we refund the full €4, no questions asked.

How it worksQuoted, never paraphrased.

  1. An AI model reads the whole document.

    It looks for two passages where following one rules out the other: two deadlines, two amounts, a duty and its opposite, a definition used two ways.

  2. Every quote is checked against your text.

    Before you see a contradiction, we find both passages in your document word for word. One we cannot find is left out, and we tell you how many were.

  3. You decide what stands.

    For each one we suggest which passage should stand and how to reword the other. You choose and download the result, and we check the repaired copy again.

Your documentGone after 24 hours.

We delete your document and its results 24 hours after you upload it. Until then, anyone with the link to your results can see them, so share it only with people who may.

The text is read by an AI model that we reach through OpenRouter. OpenRouter sends it only to model providers that do not store it or train on it. Payments go through Stripe. We set no cookies of our own. Read the privacy notice and the terms.

It finds what a careful reader would call a contradiction. It can miss one, and it can flag a pair that a closer reading reconciles. It is not legal advice.