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Definely vs Spellbook

A side-by-side comparison of Definely and Spellbook, two Legal tools, drawn from Ignaite's continuously-verified listings.

Compared from listings verified as of

Definely

Legal

AI contract drafting, review, and proofing suite inside Microsoft Word.

View Definely

Spellbook

Legal

AI contract drafting and review, inside Microsoft Word.

View Spellbook

At a glance

Feature comparison of Definely and Spellbook
AttributeDefinelySpellbook
CategoryLegalLegal
PricingPAIDPAID
LicenseProprietaryProprietary
DeploymentCloudCloud
PlatformsWebWeb
Model support (differs)Multi-model
Vendor (differs)DefinelyRally Legal (Spellbook)

The honest brief

Definely

Goes deep on the unglamorous drafting work — definitions, cross-references, proofing — inside Word rather than bolting a chat panel onto legal review.

  • Native Microsoft Word workflow
  • Used by 150+ law firms
  • iManage + NetDocuments integrations
  • SOC 2 and ISO 27001 certified
  • No public pricing — demo first
  • Tied to the Word workflow
  • Focused on pre-execution drafting

Spellbook

Runs entirely as a Microsoft Word add-in, so drafting and redlining happen in the document lawyers already work in.

  • Native Microsoft Word add-in
  • Clause benchmarking + playbook review
  • Early generative-AI legal tool (2022)
  • Multi-model (GPT, Claude)
  • Paid-only, no free tier
  • Tied to the Word workflow
  • Less suited to litigation/research