Spellbook

Spellbook is an AI-powered legal assistant that integrates directly with Microsoft Word to help lawyers draft, review, and negotiate contracts more efficiently. Trusted by over 4,000 legal teams worldwide, Spellbook is purpose-built for transactional lawyers who spend significant time on contract work. The platform leverages multiple large language models including GPT-5 and Claude, trained specifically on legal language, to suggest contract clauses, identify missing terms, flag potential issues, and generate entire contract sections based on user prompts. Spellbook's Word Add-In provides five core capabilities: Review (clause-by-clause analysis), Draft (generate new language), Ask (natural language questions about contract terms), Benchmarks (compare clauses against market standards), and Playbooks (save reusable review instructions). The newer Associate feature goes further — it's an AI agent that can work through multi-document legal matters with attorney oversight, handling complex tasks like reviewing an entire due diligence data room or cross-referencing terms across related agreements. Spellbook understands legal concepts and provides context-aware suggestions that maintain legal precision while dramatically reducing drafting time. The platform maintains industry-leading security with SOC 2 Type II compliance, GDPR and CCPA compliance, and Zero Data Retention agreements that prevent any data from being used for AI model training.