Redlining (Contract)

Redlining is the process of marking up a contract document with proposed changes during negotiation — typically showing proposed deletions with strikethrough text and proposed additions with underlined or colored text. The term derives from the red ink historically used on paper contracts to indicate proposed changes. In modern practice, redlining occurs in word processors using track changes functionality. AI tools now generate suggested redlines automatically based on a configured playbook — identifying counterparty language that deviates from standard positions and proposing alternative language drawn from the firm's preferred provisions — accelerating the initial markup phase of negotiation.

Producing a first redline of a counterparty's agreement draft is a routine but time-intensive task. An experienced associate reviewing a 30-page service agreement and producing a comprehensive redline against the firm's standard positions may take three to four hours. AI-assisted redlining can produce a first-pass markup in minutes, which the lawyer then reviews, refines, and supplements with judgment calls that the AI cannot make.

The time savings multiply at scale. A transactional practice reviewing and marking up dozens of vendor agreements per month can compress significant associate time investment through AI redlining assistance.

AI redlines are starting points, not final work product. The AI marks positions based on playbook rules; it does not understand the commercial context, the relationship dynamics, the client's risk tolerance for a specific deal, or the counterparty's likely response to various positions. The lawyer applies these judgments to refine the AI-generated markup before sending.

Spellbook integrates redlining assistance directly into Microsoft Word, suggesting clause-level edits based on configured standard positions without requiring lawyers to leave their drafting environment. Suggested redlines appear as track changes that the lawyer accepts, modifies, or rejects.

Robin AI offers AI-generated redlines based on playbook configuration, with explanations for each suggested change that help lawyers understand the basis for the AI's position and communicate it to counterparties. Draftable provides document comparison functionality that supports the redlining process by clearly visualizing changes between contract versions.