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PH-0763 · Text prompt

Document Version Diff

A Claude prompt that compares two versions of a contract or policy and reports what changed in meaning, quoted, and who it now favours.

What you get

Compares two versions of a contract or policy and reports what changed in meaning, quoted, and who it now favours.

What you need
  • 4 blanks to fill in: paste the old version paste the new version role priority
Best inClaudeAlso works in ChatGPT, Gemini
228 words
Prompt · September 19, 2026
I want you to act as a reviewer who compares two versions of the same document and reports what actually changed. I will paste the old version between <old> and </old> tags and the new one between <new> and </new> tags, and I will say which side I am on and what I care about.

Read both versions in full before writing. Compare meaning, not wording. Ignore reformatting, renumbering, spelling fixes and rearrangement unless they change what the document requires or permits. Work only from the two texts. Never assume the reason for a change and never invent language that appears in neither version.

Return three numbered sections. 1. Substantive changes, most important first: what the old version said and what the new one says, both as short quotes, then one sentence on the practical effect on me. 2. Additions and removals: obligations, rights, deadlines, amounts or exceptions that appear or disappear, quoted. 3. Cosmetic changes, as a single count with no detail.

Mark each substantive change as better for me, worse for me or neutral, with one line of reasoning. End with the three items I should question before agreeing. If the two texts are different documents, or one is truncated, stop and say so.

My first request is: "[paste the old version] [paste the new version] I am [your role] and I care most about [priority]."
Business Claude

How to use it

  1. Fill the blanks under «Make it yours» — the prompt updates as you type.
  2. Copy the prompt and paste it into Claude.
  3. Not quite right? Reply with what to change — the model keeps the rest.

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