Based only on the facts in our directory. The right pick still depends on the job you need done.
Lower starting price
Not comparable
Not comparable: Spellbook does not list a price
Free plan
Tie
Neither has one
Higher rating
Spellbook
4.1 against 4.2
Same job?
Yes
Both are Legal AI tools
Side by side
Compared on
Ivo
Spellbook
Our rating
4.1
4.2Better
Starts at
$500/mo
Not listed
Free plan
No
No
Category
Legal AI
Legal AI
Plans
From $500/mo
See pricing
Key features
AI contract redlining applied against a legal team's own playbook and precedents
Works directly inside Microsoft Word rather than a separate review interface
Built specifically for Fortune 500 and enterprise in-house legal teams
Reports up to 75% reduction in contract review time
Annual per-user pricing includes playbook creation and ongoing support
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
Pros
Playbook-driven redlining keeps output consistent with a team's actual negotiating positions
Native Microsoft Word integration fits how in-house legal teams already work
Included playbook creation and onboarding lowers the setup burden versus a bare API tool
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
Cons
$6,000 per user per year is a real commitment with no visible lower-cost tier
Built specifically for in-house teams, a weaker fit for solo practitioners or small firms
Playbook-driven output is only as good as the playbook a team builds and maintains
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
Company
Ivo, founded 2021
Spellbook, founded 2017
Prices come from each vendor's pricing page, last checked 20260716. Check the vendor before you buy.
FAQ
Questions people ask
Is Ivo better than Spellbook?
In our reviews Ivo scores 4.1 and Spellbook scores 4.2. The better pick depends on the job. Ivo: Redlines contracts against a legal team's own playbook directly inside Microsoft Word. Spellbook: Drafts and redlines contracts directly inside Microsoft Word.
Spellbook
Ivo
