Last updated: August 2026. Legal AI splits cleanly into two things that get confused: software that helps you draft and review documents, and software that runs the practice around them. Buying the first when you needed the second is the common mistake. Some links are affiliate links; it never changes our picks — disclosure.
Quick verdict
Spellbook for contract drafting and review, because it runs inside Word where the drafting already happens. Clio for running the practice — matters, time, billing and trust accounting. They’re complements, not alternatives, and most firms end up wanting both for different reasons.
Our scores, side by side
| Tool | Our score | Best for | From | Watch out for |
|---|---|---|---|---|
 Spellbook | 7.9/10 | Lawyers drafting and reviewing contracts in Word. | Paid | Expensive |
 Clio | 8.0/10 | Running a law practice end-to-end. | $49/mo | AI is secondary |
| Scored on | Spellbook | Clio |
|---|---|---|
| Ease of use | 9 | 7 |
| Features | 7 | 9 |
| Value | 5 | 6 |
| Performance | 8 | 8 |
Scores are ours, from hands-on use — how we test. Pricing verified Aug 2026; vendors change prices, so check the tool page for the current position.
Spellbook — contract work, inside Word
The reason to pick it over a standalone platform is boring and decisive: it’s a Word add-in. No import, no export, no second tool to learn, no copying clauses between windows. Lawyers already draft in Word, and meeting them there removes most of the adoption problem.
The redlines are genuinely useful rather than generic — it flags terms that sit outside market standard and drafts clauses in the document you’re already in. Two honest limits: it’s expensive, and it’s lawyers-only. If you’re not doing contract volume, the maths doesn’t work.
Clio — running the practice
Clio is the category standard for practice management: matters, time capture, billing, trust accounting to compliance standards, client intake, and a deep library of legal-specific integrations. Trust accounting in particular is the thing generic project tools simply cannot do.
We’d rather be straight about one thing: the AI is additive here, not the reason to buy. The core practice management is why firms run on it. If you want an AI-first product, that’s a different question and a different tool.
The enterprise tier we haven’t tested
Harvey is the platform large firms and in-house teams keep asking about — trained for legal work specifically, built for diligence across large document sets, with the security and audit controls that legal work requires. We haven’t used it, so it’s a listing on this site rather than a review and carries no score. If you’re at the scale where it’s relevant, you’ll be running a procurement process anyway.
LawGeex used to be the other one worth knowing — automated first-pass review against your own playbook, so routine NDAs clear themselves and only exceptions reach a lawyer. We’ve dropped it as a recommendation. As of August 2026 its site is serving an expired security certificate, so browsers block it outright, and its enterprise business was reportedly sold in 2023 with no new customers taken on since. The idea is still a good one; buy it from someone who is still answering the phone.
A note on using AI for legal work
Every tool here assists legal judgement rather than replacing it, and the ones built for law are explicit about that. General-purpose chatbots are a different matter: they will produce confident, well-formatted citations that do not exist, and lawyers have been sanctioned for filing them. If you use a general model for legal research, verify every citation against the primary source before it leaves your desk.
Nothing on this page is legal advice, and we’re not lawyers — we’re reviewing software.
Which should you choose?
- Drafting and reviewing contracts: Spellbook.
- Running a practice end to end: Clio.
- Diligence across large document sets: Harvey (untested by us).
- Clearing routine contracts against a playbook: Spellbook is the practical answer now that LawGeex is effectively off the market.
How we tested
We paid for Spellbook and Clio and used them on real work: a set of commercial agreements through Spellbook’s review and clause drafting, and a full matter lifecycle in Clio from intake through time capture to invoice. Scores cover ease of use, features, value and performance, with the reasoning on each tool page. Harvey is listed for completeness and explicitly carries no score; LawGeex is kept only as a record of a tool we no longer recommend. Full method: how we test AI tools.
FAQs
Can AI replace a lawyer?
No, and none of these tools claim it. They compress the mechanical parts — first-pass review, clause drafting, finding the unusual term — so the judgement happens faster, not automatically.
Is it safe to put client documents into these?
The legal-specific tools are built with that expectation and publish their security and retention terms. General consumer chatbots are not, and your professional obligations don’t relax because the software is convenient. Check the terms against your jurisdiction’s rules before uploading anything privileged.
Is Spellbook worth the price?
On contract volume, yes — it’s high-value and priced accordingly. Occasional contract work won’t justify it.
Does Clio actually use AI?
It has AI features, but they’re secondary. You buy Clio for practice management. We’d rather say that than sell it as something it isn’t.
Get the best AI tools in your inbox
One useful email a week — tool verdicts, honest picks, and copy-paste prompts. No spam, unsubscribe anytime.