Luminance

AI contract drafting and review, inside Microsoft Word.

Spellbook is an AI assistant for transactional lawyers that drafts, redlines, and reviews contracts directly inside Microsoft Word. It benchmarks clauses, runs playbook-based review across documents, and suggests language. Launched in 2022 as one of the first generative-AI tools for legal work.

Domain-specific AI for legal and professional services.

Harvey is an AI platform built for law firms and corporate legal teams to research, analyze documents, and draft. It pairs an assistant and a secure document vault with purpose-built agents that execute complex legal work end to end. Sold through enterprise contracts rather than self-serve.

Attorney-built AI for contract review and redlining in Word.

LegalOn is an AI contract review platform that detects risk and inserts redlines directly inside Microsoft Word. It ships 50+ attorney-built playbooks for common contract types so teams get guidance grounded in legal expertise, not just a general model. Founded in 2017 in Japan and used by thousands of legal teams.

AI legal assistant grounded in Thomson Reuters content.

CoCounsel is an AI assistant for lawyers and tax professionals that handles legal research, contract analysis, due diligence, and drafting. Built from the Casetext acquisition, it grounds answers in trusted Thomson Reuters sources like Westlaw and Practical Law and integrates with Microsoft 365. Pricing ranges from per-task to enterprise seats.