GrammarlyFreemium
AI writing assistant for grammar, clarity, tone, and generative drafts across every app you write in.
AI / LLM comparison
Grammarly vs Spellbook
Pricing, pros, cons, and ideal use cases — side by side.
SpellbookEnterprise
AI contract review and drafting that lives inside Microsoft Word, where lawyers already work.
At a glance
| Grammarly | Spellbook | |
|---|---|---|
| Pricing | FreemiumFree plan available. Premium $12/month. Business from $15/seat/month. | EnterpriseNot published — 7-day free trial, then per-seat pricing quoted after a demo. Ask about Playbook setup, which is where the value concentrates. |
| Category | AI / LLM | AI / LLM |
| Ideal for | Any SMBLaw FirmsAgenciesCustomer Support TeamsProfessional Services | Small and mid-size law firms doing transactional workLean in-house legal teamsCorporate counsel handling high contract volumeFirms standardizing on drafting playbooks |
Pros & cons
Grammarly
Pros
- Works in every major app
- Strong brand voice features
- Tone detection is excellent
- Good generative AI drafts
Cons
- Browser extension can slow pages
- Plagiarism check is weaker than dedicated tools
- Advanced suggestions need premium
Spellbook
Pros
- Works inside Microsoft Word — near-zero workflow change
- Playbooks encode your standards so redlines stay consistent
- Compare benchmarks a deal against market comparables
- Cited answers rather than unsourced summaries
- Free trial available without a sales call
Cons
- No public pricing
- Transactional focus — weak fit for litigation practices
- Playbook quality determines output quality; setup is real work
- Not a legal research platform
Which should you choose?
Grammarly is the lighter-weight option (Freemium), while Spellbook sits higher on the pricing ladder (Enterprise). Grammarly is built around any smb; Spellbook leans more toward small and mid-size law firms doing transactional work. Shortlist the one whose strengths line up with your biggest constraint.
Still deciding between Grammarly and Spellbook?
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