Spellbook

About Spellbook

Spellbook is a legal AI tool that operates as a Microsoft Word sidebar, bringing generative AI capabilities directly into the workflow that lawyers already use. Unlike standalone contract management platforms, Spellbook meets attorneys where they work—within the document itself—making adoption frictionless for legal professionals. The tool uses a combination of OpenAI's GPT-4 and proprietary legal language models trained on millions of contracts to draft new clauses, suggest missing provisions, identify aggressive or unusual terms, and automatically redline agreements. Lawyers can ask Spellbook to explain a clause in plain English, generate alternative language, or check whether a provision is market-standard for a given deal type. Spellbook covers a broad range of contract types including NDAs, employment agreements, SaaS agreements, M&A transaction documents, real estate leases, and financing documents. The AI can be guided through specific deal contexts—such as the governing law, party roles, and negotiation posture—to produce more contextually accurate suggestions. Developed by Rally Legal Inc. and launched in 2022, Spellbook quickly gained traction among law firms and corporate legal departments following its release on the GPT-4 API. The company serves thousands of legal professionals globally across North America, the UK, and Australia. From a compliance perspective, Spellbook processes potentially highly sensitive legal documents. The company operates under a strict zero data retention policy with OpenAI's API, meaning documents are not stored or used for model training. Spellbook is SOC 2 Type II certified and provides data processing agreements suitable for firms handling confidential client information under bar association ethics rules.