Spellbook is an AI copilot for contract work that runs as an add-in inside Microsoft Word. It helps lawyers draft new contract language, redline existing agreements, and review incoming contracts faster by suggesting edits and flagging risk directly in the document a lawyer is already working in.
The company was founded in 2021 in Toronto, Canada, and launched its product in 2022. It has since become one of the more widely adopted AI tools in legal technology, reporting adoption by thousands of legal teams across law firms and in-house departments worldwide.
Spellbook's approach centers on staying inside the lawyer's existing workflow, Microsoft Word, rather than requiring lawyers to move contract work into a separate platform.
Key Features
Spellbook drafts and redlines contract language, benchmarks clauses against a large library of comparable contract types, and reviews multiple documents at once for consistency and risk. Legal teams can build custom playbooks that encode their own negotiation positions and standards so the AI applies firm- or company-specific preferences automatically during review.
Pricing
Spellbook does not list fixed self-serve pricing on its website. Pricing is based on the number of team members licensed and is provided as a custom quote after booking a demo. A 7-day free trial is available for lawyers and legal teams who want to evaluate the product before committing, with extended trials sometimes available for larger organizations.
Key Features
AI contract drafting — Generates and suggests contract language directly inside Microsoft Word based on context and instructions.
AI-assisted redlining — Suggests and applies redline edits to incoming or existing contracts to speed up review cycles.
Clause benchmarking — Compares contract language against a large dataset of comparable clauses to flag unusual or risky terms.
Multi-document review — Reviews multiple related contracts at once for consistency across a deal or portfolio.
Custom playbooks — Lets legal teams encode their own negotiation standards so the AI applies firm- or company-specific preferences.
Microsoft Word integration — Works as a native add-in inside Word so lawyers do not have to leave their existing drafting environment.
Enterprise security and compliance — SOC 2 Type II certified with GDPR and CCPA compliance, plus zero data retention options.
Team training and support — Offers group training sessions and dedicated support for larger legal teams.
Pros & Cons
Pros
Works inside Microsoft Word rather than requiring a separate platform
Clause benchmarking against a large contract dataset helps catch unusual terms
Custom playbooks let teams enforce their own standards automatically
SOC 2 Type II, GDPR, and CCPA compliance suit sensitive legal work
Adopted broadly across both law firms and in-house legal teams
Cons
Pricing is not publicly listed and requires a custom quote
Best suited to Word-based workflows, less useful for teams on other document platforms
AI-suggested language still requires attorney review before use
Enterprise-tier commitments have reportedly required longer minimum terms
Pricing
Law Firms Custom quote Per licensed user
In-House Teams Custom quote Per licensed user
Frequently Asked Questions
What is Spellbook used for
Spellbook is an AI copilot for lawyers that drafts, redlines, and reviews contracts directly inside Microsoft Word.
How much does Spellbook cost
Spellbook does not publish fixed pricing. Cost is based on the number of licensed users and is provided as a custom quote after a demo.
Does Spellbook offer a free trial
Yes, Spellbook offers a 7-day free trial for lawyers and legal teams, with extended trials sometimes available for larger organizations.
Is Spellbook a standalone application or a Word add-in
Spellbook runs as an add-in inside Microsoft Word rather than as a separate standalone application.
Who is Spellbook designed for
Spellbook is designed for transactional lawyers at law firms and in-house legal departments who draft and review contracts.
Is Spellbook secure for confidential legal documents
Spellbook is SOC 2 Type II certified and GDPR and CCPA compliant, and offers zero data retention agreements for sensitive contract data.
Where is Spellbook headquartered
Spellbook is headquartered in Toronto, Ontario, Canada.
How many legal teams use Spellbook
Spellbook reports being used by over 4,500 legal teams worldwide.