About
Spellbook builds generative AI software for contract drafting and review, selling primarily to law firms and in-house legal teams. Its differentiator is a Word-native workflow augmented by legal-specific datasets and large language models, helping transactional lawyers work within the documents they already use.
Market
Spellbook competes in the legal AI market, with a particular focus on transactional contract drafting and review for law firms and in-house legal teams. It positions itself as an AI copilot embedded directly in Microsoft Word, differentiating through contextual, Word-native workflows rather than requiring users to move into a standalone platform. Compared with enterprise-oriented platforms such as Harvey, Spellbook is more centered on day-to-day commercial contracting and document-level assistance.
Spellbook targets transactional commercial lawyers and legal teams in both law firms and corporate legal departments, particularly teams that draft and review contracts in Microsoft Word. Its buyer and primary users are commercial counsel, transactional attorneys, and legal operations teams seeking faster contract workflows.
At a Glance
Problem
Transactional legal work is slowed by repetitive contract drafting, manual first-pass review, and the need to identify non-standard terms across vendor and commercial agreements. The central pain is labor-intensive work that consumes lawyers’ time and can allow deviations from approved standards to slip through. The main use case is reviewing and negotiating contracts such as supplier MSAs across multiple countries, applying a firm’s or legal department’s playbook while flagging clauses that need attention. The economic value is increased lawyer capacity: Spellbook’s customer messaging describes reduced drafting time, and one customer says it may help them bill an extra hour a day.
Product / Service
Spellbook is an AI-powered contract review and drafting platform for transactional lawyers, delivered through a demo-led product with a seven-day free-trial option. It provides a first pass on contracts by redlining them against defined standards, applies playbooks, catches non-standard terms, drafts clauses and documents from scratch or from preferred precedents, and lets users search signed-contract history. The product is tuned for commercial legal work and uses large language models such as GPT-5 and Opus, while emphasizing privacy controls including zero-data-retention agreements and SOC 2 Type II compliance.
Market
Spellbook competes in legal AI, with a particularly focused position in AI-assisted contract review and drafting for law firms and in-house legal teams. Its competitive set includes tools such as Ivo, LegalOn, Definely, Thomson Reuters CoCounsel, and Lexis+ AI; broader legal-AI comparisons also place it alongside Harvey, Legora, and GC AI. The company presents meaningful commercial traction rather than a pre-revenue profile: it says it is used by more than 4,500 in-house teams and law firms across more than 80 countries. The available evidence does not provide a current revenue or ARR figure, but the customer footprint indicates substantial adoption in its target market.
Founders & Leadership
Funding History
Moxxie Ventures
Inovia Capital
Khosla Ventures
RBCx
Recent News
Spellbook unveiled its Legal Fellowship Fund, offering law students $25,000 in project funding plus mentorship, working sessions, and access to company resources to develop legal technology solutions.
Spellbook announced a $40 million USD debt facility from RBCx. The financing is intended to support strategic acquisitions as the legal AI market consolidates.
Spellbook entered a two-year partnership with the Canadian Bar Association, becoming its exclusive AI contract drafting and review provider. CBA members receive 20% off annual Spellbook licenses.
Spellbook released its inaugural State of Contracts report, analyzing legal contract trends and benchmarks using anonymous, aggregate data from hundreds of thousands of agreements. The report includes more than 270 clause benchmarks across 13 categories.
Kennedys partnered with Spellbook to create a legal training program for junior lawyers adapting to AI-driven changes in entry-level legal work. The program was initially planned for pilot deployment across Kennedys’ U.S. and U.K. offices.
Spellbook raised a $50 million Series B led by Keith Rabois at Khosla Ventures, with participation from Threshold Ventures and existing investors; the round valued the company at $350 million post-money and brought total funding above $80 million. The announcement also introduced Market Comparison in beta.
Spellbook became one of the first legal AI companies to integrate OpenAI’s GPT-5 into its contract-focused AI copilot suite.
Active Roles
19Business Model
Spellbook sells team licenses through custom pricing based on the number of members on a license, with pricing provided through a sales demo. It also offers a seven-day free trial and sells its Word Add-In and Associate suite, training, and support services to legal teams.
Products
Customers
Tech Stack
Similar Companies
Competitors
Key Investors
Khosla Ventures, Inovia Capital, Threshold Ventures, Thomson Reuters Ventures, Bling Capital, Moxxie Ventures