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Lawyers

Extract and compare contract clauses

Submit several versions of the same contract. The AI identifies divergences on sensitive clauses without ever seeing the parties.

The problem

Comparing the fourth markup against the second is the kind of task where attention fails before the work does. It is also the kind of task where the interesting difference is a single word in a limitation of liability. But a negotiation draft carries the counterparty, the price and the commercial terms, and those are the parts a client would least like to see in a third party's logs.

How it works

  1. Protect every version together

    Because the same party gets the same placeholder across all drafts, a difference between versions is a real difference in the text, not an artefact of masking.

  2. Ask for the divergences

    Name the clauses that matter. The model compares structure, obligations and thresholds without needing to know whose obligations they are.

  3. Keep the formatting

    Outputs are rebuilt as DOCX or PDF with the original layout, so a marked-up comparison stays a document you can circulate rather than a wall of plain text.

Prompt to Claude

Compare clauses 7-12 in [c.CONTRACT_V1], [c.CONTRACT_V2] and [c.CONTRACT_V3].

What gets masked here

  • Party names and signatories
  • Prices, fees and liability caps
  • Effective dates and terms
  • Registered offices and jurisdictions
  • Internal references and matter numbers

What you get back

A clause-level diff you can check in minutes, covering the versions you actually hold rather than the ones you were willing to upload.

How accurate is the detection?

Questions on this use case

Can it handle Word documents with tracked changes?
DOCX is supported and rebuilt with its original layout and formatting. For a comparison across drafts, working from the clean versions gives the model the least ambiguous text; the tracked history stays in your own copy, which never leaves the machine.
Are amounts and dates masked too, or only names?
Both, and you decide. Amounts, dates, case numbers and client references are detected alongside names, and each category can be switched on or off per document. In a negotiation the price is often more identifying than the party, which is why it is covered by default.

Try it on this exact task.

One week free, no credit card. Nothing is uploaded, so you can run it on a real file without asking anyone's permission.

macOS Apple Silicon and Windows 10/11