Spellbook
AI contract drafting and review tool for lawyers that works inside Microsoft Word - trained on 1 billion+ lines of legal text.
Spellbook is an AI legal assistant that operates as a Microsoft Word add-in, bringing contract drafting, review, and negotiation capabilities directly into the workflow where lawyers already work. Built on GPT-4 and trained on over one billion lines of legal text from contracts, statutes, and case law, Spellbook suggests missing clauses, flags unfavorable terms, drafts negotiation redlines, and compares provisions against market-standard language. Founded in 2021 by Scott Stevenson and based in Toronto, Spellbook serves solo practitioners, law firms, and in-house legal teams at companies like Shopify. A 14-day free trial is available with paid plans starting at $149/user/month. The platform supports NDAs, service agreements, employment contracts, and commercial leases.
Key Features
- Microsoft Word add-in - drafts and reviews contracts inside the tool lawyers already use
- Clause suggestion engine that identifies missing standard provisions in contract drafts
- Redline generation - AI drafts negotiation edits based on the desired party position
- Market standard comparison - highlights terms that deviate from typical market language
- Risk flagging for unusually broad indemnification, IP assignment, and limitation-of-liability clauses
- Plain-English question answering about any selected clause or contract section
- Support for NDAs, service agreements, employment contracts, and commercial leases
Use Cases
- Solo practitioners and small law firms accelerating contract review without adding associate headcount
- In-house legal teams reviewing high volumes of vendor contracts faster than traditional manual review
- Startup founders reviewing agreements before sending to outside counsel for final sign-off
- Transactional lawyers drafting initial contract positions and redlines in a fraction of traditional time
Pros
- Works inside Microsoft Word - lawyers adopt it without changing their existing workflow or learning new software
- Trained specifically on legal text - outputs understand legal language and context far better than general LLMs
- 14-day free trial with actual contract work allows real evaluation before committing to $149/month
Cons
- Primarily covers English-language contracts and US-centric legal frameworks for clause analysis
- Cannot replace legal judgment for complex bespoke transactions where context and strategy are critical
- $149/user/month is significant for solo practitioners or early-stage firms with limited billing volume
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