Best AI contract drafting tools for solo lawyers and small firms (2026)
Facts checked on 14 October 2026. Prices change, so check each vendor's page before you decide. LexDraft is our product.
A solo lawyer or a five-lawyer firm usually wants three things from legal AI: a price you can see, a way to try it on a real agreement this week, and a tool that works in Microsoft Word. This guide compares the options on those terms.
The short answer
- LexDraft if you want a published price, a free plan with no time limit, and contract review inside Word with tracked-change redlines. Free, then $99 a month.
- Microsoft 365 Copilot if your firm already runs on Microsoft 365 business plans and wants one AI across Word, Outlook and Teams.
- Gavel Exec if you want a Word add-in with market benchmarks and a SOC 2 Type II report, and you are happy to pay more per user.
- CoCounsel Legal if legal research on Westlaw matters as much as drafting.
- Harvey, Spellbook, LegalOn or Ironclad if you are happy to book a demo for a quote.
Compared on what a small firm needs
| Tool | Published price? | Try it | Works in Word? |
|---|---|---|---|
| LexDraft (ours) | Yes. Free; Professional $99 a month or $990 a year; Business $199 a month or $1,990 a year; Enterprise custom. | Free plan, no time limit, no credit card. | Yes: Word 365 (Windows and Mac), Word 2021, Word on the web. |
| Microsoft 365 Copilot | Yes. Copilot Business $21 a user a month paid yearly; an add-on to a qualifying Microsoft 365 business plan. | One-month trial. | Yes, plus Excel, PowerPoint, Outlook and Teams. |
| Claude for Word | Yes. Needs a paid Claude plan; Claude Pro is $20 a month (checked 11 October 2026). | Not on Claude's free plan. | Yes. |
| Gavel Exec | Yes. $160 a month per user, or $1,740 per user a year. | 25 free queries per user, no credit card. | Yes, and online. |
| CoCounsel Legal | Shown online to new firms of up to 10 attorneys after a details form; 1, 2 or 3 year terms. | Free trial. | Yes, per its product page. |
| Spellbook | Not on its pricing page, which says pricing depends on team members; book a demo. | 7-day free trial. | Yes. |
| LegalOn | No amounts on the pricing page we checked on 14 October 2026; quote after a demo. | Book a demo. | Yes. |
| Harvey | Not shown: harvey.ai/pricing returned "not found" when we checked on 14 October 2026, and the site asks you to request a demo. | Request a demo. | Has a Word add-in. |
| Ironclad | No amounts on the pricing page we checked on 14 October 2026; request a custom quote. | Request a demo. | Yes: AI review in Word, inside a full contract lifecycle platform. |
What LexDraft does in Word
- Review with tracked changes. Risk-scored clause review (Critical, High, Medium, Low) and proposed redlines you accept as native Word tracked changes. Word-level edits change only the words that need to change.
- Playbooks. Four built-in review playbooks: NDA, SaaS MSA, DPA and Services.
- Checks without AI. Rule-based defined-term and cross-reference checks that run without AI, with a jump to each finding.
- Citation check. Case-law citations can be cross-checked against CourtListener's US federal and state appellate opinions. Counsel must still verify each authority.
- US law. Federal, all 50 states and D.C.
Where others are stronger
- Copilot is cheaper per user if you already pay for Microsoft 365 business plans, and it also works in Excel, PowerPoint, Outlook and Teams.
- CoCounsel and Harvey do legal research. LexDraft is a drafting and review tool, not a research database.
- Security audits. Gavel Exec, Harvey and Ironclad each say they have SOC 2 Type II audits or reports. LexDraft's SOC 2 Type II audit is on its roadmap and not completed.
- LegalOn ships far more playbooks (135+ on its entry plan) and covers 23 countries. LexDraft has four and covers US law only.
How to choose
- Start with your document. Open a real NDA or services agreement you have already negotiated and run it through two tools. Count the useful findings and the false alarms.
- Check the price page. If there is no price, ask about seat minimums and contract length before the demo.
- Think about versions. Decide how you will keep one source of truth if a tool works outside your Word file.
- Verify everything. No AI tool replaces your review.
Frequently asked questions
What is the best AI contract drafting tool for a solo lawyer?
For a solo US lawyer who wants a visible price and a long trial, LexDraft is the simplest start: a free plan with no time limit, then $99 a month, inside Word. If you already pay for Microsoft 365 business plans, test Copilot too.
Is there a free AI contract review tool for Word?
LexDraft's free plan includes 5,000 generated words a month, roughly 3 to 5 NDAs, with no credit card. Gavel Exec offers 25 free queries per user.
Can a small firm buy Harvey?
Harvey's site asks you to request a demo, and we found no price on the pages we checked on 14 October 2026.
Does LexDraft work outside the US?
LexDraft drafts under US law and UK law (England & Wales, Scotland or Northern Ireland).
Try it
Install LexDraft free from Microsoft AppSource. 5,000 words a month, no credit card.
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All product names are trademarks of their owners. This page compares public information as of 14 October 2026 and is not endorsed by any vendor listed. LexDraft does not give legal advice; qualified counsel must review every draft. Spotted something out of date? Email support@lexdraft.ai and we will fix it.