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Spellbook

Drafts and redlines contracts directly inside Microsoft Word

4.2 Legal AI
4.2 Very good 4.2
Works directly inside Microsoft Word, no new platform to adopt Narrower scope than full-platform competitors, doesn't cover research or due diligence
Reviewed by Challenging Voice Editorial · Updated Aug 2026 How we rate
PricingContact for Pricing
Free planNo
CompanySpellbook
PlatformsMac, Web, Windows
CategoryLegal AI
Founded2017
Last reviewedJul 2026
UpdatedAug 2026
Ask AI about Spellbook ChatGPT Claude Perplexity

Overview

Spellbook, originally founded as Rally in 2017 by Scott Stevenson, Daniel Di Maria, and Matthew Famsworth before rebranding around the Spellbook product launch in 2022, drafts contract language and flags risky clauses directly inside Microsoft Word, meeting transactional lawyers in the document editor they already use rather than requiring a separate platform.

That in-Word workflow targets a narrower, more specific job than Harvey or Legora's broader enterprise legal-AI platforms, also covered in this directory: contract drafting and negotiation for transactional lawyers specifically, rather than research, due diligence, and document review across an entire firm's practice areas.

The company has raised approximately $63 million total, including a $50 million Series B in October 2025 led by Khosla Ventures. For a transactional lawyer who wants contract drafting and redlining assistance inside the Word document they're already working in, rather than switching to a separate legal-AI platform, Spellbook's in-Word workflow addresses that directly.

Key features

  • Drafts contract language and flags risky clauses directly inside Microsoft Word
  • Purpose-built for transactional contract drafting and negotiation
  • No separate platform to learn, works inside an existing document editor
  • $63M total funding including a $50M Series B in October 2025
  • Originally founded in 2017, rebranded around the Spellbook product in 2022
  • Led by Khosla Ventures in its most recent funding round

Screenshots & demo

Demo video

Screenshots

Spellbook screenshot 1

Pricing

Spellbook uses custom pricing. Contact their team for a quote based on your needs.

  • Pricing modelContact for Pricing
  • Starting priceCustom
  • Free planNo
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Pricing is provided as a guide. Check the official site for the latest plans.

Pros & cons

Pros

  • Works directly inside Microsoft Word, no new platform to adopt
  • Focused specifically on contract drafting, a clear and narrow job to be done
  • Recent substantial funding from a top-tier investor
  • Longer operating history than its 2022 rebrand suggests, dating to 2017

Cons

  • Narrower scope than full-platform competitors, doesn't cover research or due diligence
  • Word-native workflow requires a firm already standardized on Microsoft's document tools
  • Smaller funding scale than Harvey or Legora limits comparable investment pace

How it compares

ToolRatingFreeFromBest known for
Spellbook (this tool)4.2No—Drafts contract language and flags risky clauses directly inside Microsoft Word
Draftwise4.4No—Clause recommendations drawn from a firm's own contract history
Mixus4.0No—Agents that operate inside email and Microsoft Word
IntelloSync3.9No—AI-powered contract drafting, review, and risk analysis

Alternatives to Spellbook

4 tools matched to Spellbook on what they do, their category and their price.

Draftwise

4.4

AI contract drafting and negotiation platform that pulls clause recommendations from a law firm's own precedent library.

Contact for Pricing Legal AI

Mixus

4.0

Email-based legal agents that draft and redline in Word, with attorney approval built in.

Contact for Pricing Legal AI

IntelloSync

3.9

IntelloSync uses generative AI to draft, review, and manage contracts across legal, sales, and procurement teams.

Free Trial Legal AI

LexCheck

3.8

LLM-powered contract review that runs inside MS Word, with LexCheck Copilot marking up agreements against your playbook.

Contact for Pricing Legal AI

Frequently asked questions

What is Spellbook?
Spellbook is a legal ai tool. Drafts and redlines contracts directly inside Microsoft Word.
Is Spellbook free?
Spellbook does not offer a free plan.
What are the best Spellbook alternatives?
The closest matches in the directory are Draftwise, Mixus, and IntelloSync, compared side by side above.

Reviews

4.2 Editorial rating No reviews yet

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