Spellbook / spellbook.legal
AI contract drafting and review tool that works directly inside Microsoft Word as an add-in, allowing lawyers and legal teams to draft, review, and negotiate contracts without leaving their document.
Pricing
$69/mo
Free plan
No
Category
Developer Tools
Platforms
1
Free plan
No
API access
No
Open source
No
Platforms
1
Spellbook is an AI contract drafting tool that integrates directly into Microsoft Word as an add-in, which is important because legal drafting happens in Word — the tool works where lawyers already work rather than requiring a new interface. This integration philosophy distinguishes Spellbook from browser-based legal AI tools.
The core capabilities include drafting contract clauses from natural language descriptions, reviewing existing contracts to flag unusual terms and missing provisions, suggesting counter-proposals for contract negotiations, and generating explanations of complex legal language in plain terms.
Spellbook is trained on a large corpus of commercial contracts and understands legal document conventions — it knows what provisions a standard SaaS agreement should contain, what a typical indemnification clause looks like, and when a non-compete is unusually broad.
At $69/month for Starter, Spellbook is priced for individual lawyers and small legal teams who cannot justify the enterprise cost of Harvey AI or Thomson Reuters CoCounsel but want AI contract assistance more sophisticated than general-purpose AI tools.
The in-Word integration is also practically important: the AI output appears directly in the document rather than in a separate interface, reducing the copy-paste workflow that breaks attorney concentration.
Spellbook AI runs as document analysis llm software built around text and document workflows. Users typically start with a prompt, upload, or connected data source, and the underlying model handles the heavy lifting before returning a result you can refine or export. It's available on microsoft word (add-in).
The capabilities that matter most for teams evaluating Spellbook AI.
Native Word add-in that provides AI contract assistance directly in the document where lawyers are already working, without requiring interface switching.
Generates contract clause language from natural language descriptions, trained on commercial contract conventions and common clause structures.
Reviews contract markup and generates counter-proposals for negotiated terms, streamlining the negotiation redlining process.
Starter $69/month. Professional $99/month. Teams custom pricing. Enterprise custom. 7-day free trial.
Model
Subscription
Starting price
$69/mo
Free trial
Yes
Harvey AI is more comprehensive but enterprise-only for large law firms. Thomson Reuters CoCounsel provides Westlaw-grounded research alongside drafting. Clio AI includes contract tools within broader practice management. ContractPodium focuses on contract management workflows.
A side-by-side look at the closest alternative in this category.
Key facts about model providers, platforms, and team support.
Model Provider
OpenAI, Anthropic
Platforms
Microsoft Word (add-in)
Deployment
SaaS
Integrations
Microsoft Word, Microsoft 365
Team Collaboration
No
Launch Year
2022
Compliance signals and data-handling notes as reported by the vendor.
Review Spellbook's data handling policy. Contract content processed on Spellbook's infrastructure. Attorney-client privilege protections in terms of service.
Review Spellbook's privacy policy. Contract content is transmitted to Spellbook's AI infrastructure for processing. Review implications for confidential client contract matters.
Editorial Verdict
Spellbook is the best AI contract drafting tool for individual lawyers and small legal teams who want AI assistance directly in Microsoft Word at an accessible price point.
Last verified July 24, 2026.
Starter $69/month. Professional $99/month. Teams custom pricing. Enterprise custom. 7-day free trial.
No publicly listed pricing. Enterprise-focused with custom pricing. Contact Spellbook for pricing. Designed for law firms and corporate legal teams.
Review Spellbook's data handling policy. Contract content processed on Spellbook's infrastructure. Attorney-client privilege protections in terms of service.
Review Spellbook's data handling policy for legal documents. Enterprise pricing includes appropriate data security provisions. Legal professional privilege considerations should be reviewed.
Review Spellbook's privacy policy. Contract content is transmitted to Spellbook's AI infrastructure for processing. Review implications for confidential client contract matters.
Legal documents contain privileged content. Review Spellbook's data handling and confidentiality provisions. Enterprise terms should address attorney-client privilege. Data processed through OpenAI's API.
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