Harvey vs Spellbook

Harvey

Pros

• Deep firm-specific customization via Vault, rather than a generic legal chatbot
• Backed by heavy investment and adopted by a large share of the largest law firms, which has pushed rapid feature development
• Word, Outlook and Copilot integration means lawyers can use it inside tools they already have open

Cons

• Priced well beyond what small and mid-size firms can justify, with enterprise contracts running from tens of thousands to well over a hundred thousand dollars a year
• Reported annual renewal price increases add real budget uncertainty year over year
• Output still requires a qualified lawyer's review — it accelerates drafting and research, it doesn't replace legal judgment

Spellbook

Pros

• Lives inside Word, so there's no context-switching to a separate app for drafting or review
• Playbook approach encodes a firm's actual negotiation positions rather than generic AI suggestions
• Strong fit for transactional practices with high contract volume across employment, vendor and commercial agreements

Cons

• Pricing isn't published and third-party estimates vary widely between plans, so a real quote is needed before budgeting
• Only available as a Word add-in, so teams drafting outside Word get no benefit from it
• Quality depends on how well a playbook is set up — a thin or generic playbook produces thin, generic redlines

Harvey is the better fit for:

• Running legal research and first-pass memo drafts for associates
• Redlining commercial contracts against a firm's standard playbooks
• Giving in-house counsel a searchable assistant over the company's own legal precedent
• Running diligence across a data room of thousands of documents
• Summarising a filing set for a client update without a junior reading all of it
• Finding the firm's own precedent for a clause instead of drafting it again

Spellbook is the better fit for:

• Reviewing and redlining vendor or customer contracts against standard positions
• Drafting first-pass clauses for common commercial agreement types
• Giving in-house counsel a consistent negotiation position across many contracts
• Getting a plain-language summary of an inbound contract before reviewing it
• Flagging where a counterparty's terms sit outside market norms
• Letting a small legal team handle contract volume that would otherwise need outside counsel