An AI-powered legal assistant that drafts, reviews, and redlines contracts inside Microsoft Word.
Spellbook is worth it for law firms and in-house teams that draft and review high contract volumes. It drafts clauses, flags risks, and enforces Playbooks inside Microsoft Word, and licenses from $99 per user per month replace hours of manual redlining. The 7-day trial lets a team test the Word add-in first.
Spellbook is an AI-powered legal assistant that drafts, reviews, and redlines contracts inside Microsoft Word. Spellbook runs as a Word add-in that reads a contract in real time and suggests clauses, edits, and risk flags. Scott Stevenson, Daniel Di Maria, and Matt Mayers co-founded the company in St. John’s, Canada, originally under the name Rally Legal. The Spellbook product launched in 2022 and now serves law firms, in-house legal departments, and solo practitioners.
Spellbook bundles several drafting tools into one Word sidebar. The contract drafting engine generates and rewrites clauses from a prompt. The risk review scans uploaded contracts for missing terms and liability gaps. The Playbook feature enforces a firm’s preferred positions, and Spellbook Associate runs longer legal tasks as an AI agent.
Spellbook raised over $80 million in total funding, including a $50 million Series B round in October 2025. The company runs on GPT-4 and other frontier large language models. Spellbook offers a 7-day free trial, and paid licenses start from $99 per user per month.
Spellbook is safe and legitimate, with SOC 2 Type II certification and a policy against training public models on client data. Spellbook encrypts data in transit and at rest. Spellbook operates as a private company under a documented privacy policy.
Spellbook encrypts contract data with SSL in transit and at rest, and does not use client documents to train its public AI models. Spellbook applies a firm’s own clauses only inside that firm’s account and publishes these terms in the privacy policy.
Visit spellbook.com and start a free trial or book a demo.
Install the Spellbook add-in from the Microsoft Word add-in store.
Open a contract in Microsoft Word and launch the Spellbook sidebar.
Sign in to the Spellbook account to load the firm Playbook.
Type an instruction to draft, rewrite, or review a clause.
Review the suggested language and accept the edits inline.
Run Risk Review on counterparty drafts before signing.
Generates and rewrites clauses from a prompt.
Flags missing terms, liability gaps, and one-sided language.
Checks drafts against a firm's standard positions.
Inserts indemnity, termination, and confidentiality clauses.
Stores approved language for reuse by contract type.
Runs multi-step reviews and benchmarking as an AI agent.
Condenses long agreements into plain-English briefs.
Operates inside Microsoft Word with a visual sidebar.
Draft contracts without a large support team; the drafting engine writes clauses fast and the clause library stores approved wording for reuse.
Standardize contract review; Risk Review flags one-sided terms and the Playbook enforces corporate positions across every contract.
Process commercial agreements at volume; automated review surfaces missing terms and summary tools produce plain-English briefs with review logs for reporting.
| Tool | Best for | Price | Notes | Compare |
|---|---|---|---|---|
| Harvey AI | Large-firm research and drafting | Custom quote | No free tier | vs → |
| LexisNexis CoCounsel | Research-backed legal answers | Custom quote | No free tier | vs → |
| Luminance | Contract analysis at scale | Custom quote | No free tier | vs → |
| Spellbook — this review | Contract drafting in Word | from $99/mo | 7-day trial |
Harvey AI serves large firms with broad legal research and document analysis on custom enterprise pricing, while Spellbook focuses on contract drafting inside Microsoft Word from $99 per user per month. Harvey runs in a separate web platform; Spellbook works inside the standard Word workflow with a 7-day trial.
Spellbook offers a 7-day free trial for legal professionals to test the Microsoft Word integration. The trial gives limited access to contract analysis and clause generation. Regular contract work requires a paid Starter or Professional license.
Spellbook licenses start from $99 per user per month on the Starter plan. The Professional plan costs from $149 per user per month. Spellbook quotes Enterprise pricing by team size and contract volume.
Spellbook runs on GPT-4 and other frontier large language models, including Anthropic’s Claude. Spellbook combines these models with proprietary legal algorithms. The setup produces context-aware contract drafting and clause generation.
Spellbook operates as a private company formerly named Rally Legal. Scott Stevenson, Daniel Di Maria, and Matt Mayers co-founded Spellbook in St. John’s, Canada. Spellbook raised over $80 million from investors including Khosla Ventures.
Spellbook is safe to use, with SOC 2 Type II certification and encryption in transit and at rest. Spellbook does not train its public AI models on client documents. Spellbook documents these controls in the privacy policy.
Spellbook is worth the price for law firms and legal departments that handle high contract volumes. The drafting and risk tools cut manual redlining time and justify the subscription. Teams with occasional contracts find the $99 starting cost harder to justify.
Start free, or take the trial to explore premium features across all your devices.
Visit Spellbook →
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