Section 01

Comparing two versions of a legal document takes careful reading. Gemini can map the differences.

Manually comparing two versions of a contract or policy to find what has changed takes significant time and focus. Substantial modifications can easily be missed when they are buried deep in a lengthy document, and that risk increases when teams are working under tight deadlines.

Gemini can work through this step for you. Provide the two versions as plain text and ask it to identify the differences — it will flag altered clauses, deleted sections and new additions in a structured summary, so the team can focus on the changes that matter rather than line-by-line reading.

Key insight: Gemini compares only the text you provide. It does not access historical document versions from your drives, track document history automatically, and the comparison output always needs professional review before being relied upon.

Modified clause comparison

Spot exact wording changes between old and new contractual provisions quickly.

New obligation identification

Isolate newly inserted requirements or duties added to the latest draft.

Team difference summaries

Generate a structured overview of the main document changes to share with stakeholders.

Without Gemini

Read documents side by side for hours, with the risk of missing subtle but critical wording changes that carry legal weight.

With Gemini

Receive a clear, organised breakdown of the major differences, so the team can focus directly on negotiating or flagging the modified terms.

A structured approach to document comparison keeps the AI output accurate and ensures no critical legal alterations are missed.

Identify the versions to compare

Clearly separate the original baseline document from the updated draft before starting the review.

Prepare clean text formats

Remove tracked changes markup, heavy formatting or complex tables to give Gemini clean, readable text.

Generate the structured comparison

Paste both texts into Gemini and ask it to highlight the differences and modified sections.

Conduct professional legal review

Verify the output against the original files to confirm all alterations were correctly identified.

Document and communicate the changes

Share the verified summary with your team or clients for strategic alignment and next steps.

Note: Gemini may miss minor differences in very long documents — breaking a large contract into sections and comparing them one at a time significantly improves accuracy.

Clear, restrictive prompt instructions keep Gemini focused on text comparison and prevent it from adding interpretations that are not grounded in the documents provided.

Prompt 1 — Full document comparison

Act as a legal assistant and compare these two document versions. Version A: [Insert Text A] Version B: [Insert Text B] Provide a structured summary of the major differences, highlighting modified clauses, deleted sections, and new additions. Crucial instruction: Base your comparison strictly on the provided texts. Do not add legal interpretations or assume the motivations behind these changes.

Prompt 2 — Specific clause comparison

Compare the following two versions of a specific contractual clause. Version A: [Insert Clause A] Version B: [Insert Clause B] Explain exactly what wording has changed. Crucial instruction: Rely only on the texts provided. Do not invent legal implications, add external context, or guess why the drafter made these modifications.

Before sharing a version comparison with your team

Exact match: did you confirm the identified changes genuinely exist in the original source files?

Full context: did Gemini capture the complete modified sentence rather than cutting off key legal context?

No hallucinations: has the tool avoided inventing clauses that appear in neither version?

Neutral tone: is the summary objective, simply stating what changed without assigning motive?

Placeholders removed: have all brackets been replaced with the correct document titles and dates?

Important: A Gemini-generated comparison is an initial review tool, not a legal opinion. The implications of every modification must be assessed by a qualified professional — even minor wording changes, such as "may" becoming "shall", can carry significant legal consequences that only an expert can evaluate.