Contract review, negotiation and contract management for in-house legal teams.
Legal, Finance & HR
Spellbook
Drafts, reviews and redlines contracts inside Microsoft Word.
3.9our rating
Paid
Quick take
- The easiest way to get AI contract review into a legal team: it is a Word sidebar, so there is almost nothing to learn.
- Prices are not published. You get a 7-day free trial, then a quote per seat, and reported prices rose in late 2025.
- Playbooks are the reason teams stay: they make every reviewer push back on the same clauses in the same way.
- Word only. If your team drafts in Google Docs, look elsewhere.
What is Spellbook?
Spellbook is a contract assistant that lives in a Microsoft Word sidebar. Open a contract and it flags risky or missing clauses, suggests redlines as tracked changes, drafts new clauses or whole agreements from your templates, and compares terms against what is normal in the market. Playbooks let a team save its standard positions so every reviewer pushes back the same way. A newer Associate agent works across several documents in a matter at once.
Pick Spellbook if most of your legal work is contracts and you want to stay in Word. It is aimed at small and mid-sized firms and in-house teams, and is much easier to buy and start than Harvey. Luminance is the heavier choice for big legal teams that also want a contract repository and approval workflows. CoCounsel suits research-heavy litigation work.
The catch: it only works in Word, so Google Docs teams are out. Prices are not published and reportedly went up in late 2025, and like any AI it sometimes suggests wrong or made-up language, so every redline needs a lawyer's eye.
Who's using it, and who it's for
- Commercial lawyers
- Small law firms
- In-house legal teams
- Founders handling contracts
Commercial lawyers, small firms and in-house teams who review and draft contracts in Word every day.
Key features
Review
Flags risky, unusual or missing clauses and suggests redlines as tracked changes.
Draft
Writes clauses or whole agreements from scratch or from your saved templates.
Benchmarks and Compare
Shows how a clause compares with what is common in similar contracts.
Playbooks
Save your team's standard positions as reusable review instructions.
Associate
An agent that works across several documents in a deal or matter, with you approving each step.
How we rate it
3.9 / 5
Our rating
From using the tool ourselves. The average of the five scores.
- Ease of use
- 4.5
- Features
- 4.0
- Output quality
- 4.0
- Value for money
- 3.0
- Speed & reliability
- 4.0
How quickly someone non-technical gets value from it.
How completely it covers its own job, and how well the pieces fit together.
How good the results are before you fix them.
What you get for the price, including the free plan.
How fast it is and how often it falls over.
Spellbook pricing
Free trial
Free for 7 days
Testing it on real contracts before you talk price.
- Full Word add-in for one user
- Review, Draft and Ask
- Our pick
Law Firms
Custom
Private practice firms of any size.
- Spellbook Suite and Associate
- Group training
- Dedicated support for teams over 10
In-House Teams
Custom
Corporate legal departments.
- Spellbook Suite and Associate
- Playbook build service
- Dedicated support for teams over 10
Which plan should you pick?
Run the 7-day trial on contracts you actually negotiate, then ask for a quote. Get the per-seat price and any minimum term in writing, as third-party reports put prices anywhere from under US$200 to around US$350 per user a month.
Prices in USD unless noted, checked 22 October 2026. Vendors change plans often, so confirm on their site before you buy.
Best use cases
Ways Spellbook can slot into your week.
- 1
Review an NDA in minutes
Open the counterparty's NDA in Word, run Review against your playbook and accept or reject the suggested redlines.
- 2
Draft a services agreement
Ask for a first draft from your own template, then edit clause by clause in Word.
- 3
Check a clause against market
See whether a liability cap or notice period is normal before you push back.
- 4
Keep juniors consistent
Save the team's positions as a playbook so everyone negotiates the same way.
How it fits your tech stack
It runs inside Microsoft Word, so it fits any firm that already drafts there. Pair it with your document management system; there is no separate contract repository.
Connects to
- Microsoft Word
Pros and cons
Pros
- Works inside Word with tracked-change redlines
- Quick to learn, with little setup
- Playbooks keep a team's positions consistent
- Free trial before you talk to sales
- Zero data retention agreements with AI providers
Cons
- No public pricing, and reported prices rose in late 2025
- Word only, so Google Docs users are left out
- Can suggest wrong or made-up language, so every change needs checking
- No built-in contract repository or approval workflow
Spellbook alternatives
The closest alternatives to Spellbook in the library, best rated first.
DataSnipper
4.0
Best for vouching and tick-and-tie in Excel
Compare with Spellbook
Paradox
4.0
Best for booking interviews automatically
Compare with Spellbook
Booke AI
3.8
Best for categorising bank feed transactions
Compare with Spellbook
CoCounsel
3.8
Best for legal research with linked case citations
Compare with Spellbook
Why it made the list
It is one of the most used AI contract tools for smaller firms, and it works inside Word instead of asking lawyers to learn a new app.
Spellbook FAQ
How much does Spellbook cost?
Pricing isn't published; check the vendor's site for a quote. Prices checked 22 October 2026 against Spellbook's pricing page.
Is Spellbook free?
No. Pricing isn't published; check the vendor's site for a quote.
What is Spellbook best for?
Spellbook is best for reviewing and redlining contracts in Word, drafting clauses and agreements from your templates and applying a team playbook consistently. Commercial lawyers, small firms and in-house teams who review and draft contracts in Word every day.
What are the best Spellbook alternatives?
The closest alternatives are DataSnipper, Paradox, Booke AI and CoCounsel. DataSnipper is best for vouching and tick-and-tie in Excel.
More tools in Legal, Finance & HR
AI platform for law firms and legal teams: research, drafting and document review.
Thomson Reuters' legal AI for research, drafting and document review, built on Westlaw.
Anthropic's chat assistant, at its best on careful writing and long documents.