Harvey
An AI tool built only for legal work that researches case law, reviews contracts, and analyzes large document sets for law firms and in-house teams.
An AI add-in for Word and Google Docs that reviews contracts clause by clause and drafts redlines against your own rules, used by more than 5,000 legal teams.
Spellbook is an AI contract review tool that works inside Microsoft Word and Google Docs. Lawyers use it to review a contract clause by clause, flag risk, and draft redlines against their own standards, and teams build custom playbooks that guide how Spellbook flags and suggests changes. It compares a contract's terms against a large set of real-world agreements to check if they are typical, and an Ask feature answers questions about a contract set with citations back to the source text. More than 5,000 legal teams and law firms use it. Spellbook is SOC 2 Type II certified, states it meets GDPR and the EU AI Act, and connects with Google Drive, Dropbox, OneDrive, and iManage.
This fits a legal team that already drafts and reviews a lot of contracts inside Word, whether at a law firm or a company's own legal department. Third-party reports put pricing near $89 to $199 per user a month, with higher enterprise tiers around $350 per seat for larger deployments; Spellbook does not publish official pricing, so treat these as planning figures and confirm with a current quote. A 7-day free trial is a low-risk way to test it against real contracts before committing budget. The main risk is over-reliance on its playbook suggestions, since a playbook only catches what it was built to catch, so teams still need a lawyer to review edge cases the AI was never trained on.
These estimates cover licensing, setup, integrations, staff time, security, administration, and support.
| Cost measure | Low | Base | High |
|---|---|---|---|
| First-year total | $64.3K | $101.5K | $164K |
| Three-year total | $137.2K | $207.8K | $322.5K |
| First-year cost per unit | $64.3K | $101.5K | $164K |
| Average annual cost per unit (over three years) | $45.7K | $69.3K | $107.5K |
| Component | Low | Base | High |
|---|---|---|---|
| Licensing and usage | $18.8K | $25K | $33.8K |
| Implementation | $10.8K | $18K | $30.6K |
| Integration | $12.1K | $22K | $39.6K |
| Staff time and change management | $7K | $10K | $14K |
| Security | $6K | $8.5K | $12.8K |
| Administration | $4.5K | $6K | $8.1K |
| Support | $2.1K | $2.8K | $3.8K |
Estimate assumptions: Based on 1 production workspace. This is a planning allowance, not verified product pricing. Confirm the vendor’s billing unit and current price or quote before budgeting.
Benefits have not been estimated: The current research does not estimate potential savings, return on investment, or how long it would take to recover the cost. Earlier benefit estimates are excluded.
Confirm current product identity, commercial packaging, data processing terms, sign-in and access rules, retention, integrations, support model, implementation effort, and rollback conditions.
Verify identity, package, availability, ownership, pricing, and security evidence before approving a pilot
Do not approve a pilot yet. Verify the current product identity, package, availability, owner, pricing, and security evidence; then define one workflow, a baseline, and rollback criteria.
Define what success looks like for a test of Spellbook and assign someone to lead it.
Once the requirements above are met, compare a small trial with how your team works today.
Track adoption, output quality, business results, and actual costs against the estimate.
Use the results to decide whether to stop, adjust, or expand the pilot.
Confirm encryption, how the vendor uses your data, customer data separation, how long data stays and how to delete it, activity records, sign-in and user setup, where data is handled, other companies that process data, past incidents, and what your team must manage.
Review before rollout: confirm how to export your data, revoke access, and return to your existing workflow. Assign an owner and test the rollback plan before expanding use.
Do not approve a pilot yet. Verify the current product identity, package, availability, owner, pricing, and security evidence; then define one workflow, a baseline, and rollback criteria.
An AI tool built only for legal work that researches case law, reviews contracts, and analyzes large document sets for law firms and in-house teams.
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