Spellbook vs Sembly AI

Side-by-side comparison to help you choose the best tool.

Spellbook

freemium

Productivity & Workflow

4.4 / 5.0

Spellbook is an AI contract drafting and review tool built directly into Microsoft Word, enabling lawyers to review, negotiate, and draft contracts without leaving their existing workflow. Its AI flags aggressive or unusual clauses, suggests alternative language, and drafts new provisions based on context. Spellbook is purpose-built for transactional lawyers and is one of the fastest-growing legal AI tools.

Best for: Transactional lawyers and in-house counsel who review and draft contracts in Microsoft Word and want AI assistance without changing their workflow

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Sembly AI

freemium

Productivity & Workflow

4.2 / 5.0

Sembly AI is an AI meeting assistant that automatically joins your meetings to generate smart summaries, extract tasks and decisions, and build a fully searchable transcript library. It works across Zoom, Google Meet, Teams, and Webex, and can identify key business moments such as risks, requirements, and deadlines from natural conversation. Sembly offers a team workspace where all meeting data are organised and accessible to every member.

Best for: Teams that need a reliable searchable record of decisions, tasks, and risks from every meeting.

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Feature Comparison

Feature	Spellbook	Sembly AI
Pricing	freemium	freemium
Category	Productivity & Workflow	Productivity & Workflow
Rating	★★★★☆ 4.4	★★★★☆ 4.2
Best For	Transactional lawyers and in-house counsel who review and draft contracts in Microsoft Word and want AI assistance without changing their workflow	Teams that need a reliable searchable record of decisions, tasks, and risks from every meeting.
Views	4	4

Pros & Cons — Spellbook

Pros

Works inside Word — no workflow disruption
Fast clause flagging accelerates contract review
Easy adoption for transactional lawyers

Cons

Word-only — not useful for litigation or research tasks
Smaller feature set than Harvey or CoCounsel

Pros & Cons — Sembly AI

Pros

Strong extraction of decisions and tasks from natural conversation
Works on all major platforms
Searchable archive across all meetings

Cons

Interface is less polished than competitors
AI accuracy can vary with heavy accents

Key Features — Spellbook

Microsoft Word add-in
AI clause review & flagging
Contract language suggestions
Playbook & clause library
Redline & negotiation assistance

Key Features — Sembly AI

Smart AI meeting summaries
Task and decision extraction
Searchable transcript library
Multi-platform support
Team workspace for shared insights

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