Can AI Actually Draft a Contract? I Tested 5 Tools to Find Out

Every legal tech vendor claims their AI can draft a contract in seconds. I spent a month testing five of them on the same task — a standard independent contractor agreement — to see which claims actually held up once a real attorney started reading the output line by line.

1. ChatGPT — Fast, Flexible, Genuinely Risky

ChatGPT produced a usable first draft in under a minute and was excellent at quickly adjusting tone or scope when I asked. The risk is exactly what you’d expect from a general-purpose model: it has no awareness of which jurisdiction’s contract law actually applies unless you specify it explicitly, and it occasionally generated clause language that sounded confident but used terminology inconsistent with how that clause type is actually enforced in practice. Useful for a rough skeleton, not for anything client-facing without heavy editing.

2. Spellbook — Built for the Job

Spellbook runs directly inside Microsoft Word as an add-in, which removed the copy-paste friction every other tool on this list had. It draws on a benchmark library of thousands of contract precedents and flagged gaps against standard clause structures that I hadn’t explicitly asked it to check. For transactional work specifically, this was the most genuinely useful tool of the five.

3. Clio Duo — Good If You’re Already on Clio

Clio Duo’s drafting features are reasonable but clearly secondary to its core practice-management functions. If your firm already runs on Clio Manage for billing and case tracking, having drafting assistance in the same place has real workflow value. As a standalone drafting tool, it’s not as sharp as Spellbook.

4. LegesGPT — The Budget-Friendly Option

Marketed specifically at solo practitioners, LegesGPT’s pricing was the most accessible of the group, positioned as a lower-cost alternative to running both a research subscription and a separate drafting tool. Draft quality was solid for standard agreement types, though it showed more rough edges than Spellbook on anything unusually structured.

5. Harvey — Powerful, Built for Big Firms

Harvey is genuinely impressive in capability, with deep research and drafting features across multiple practice areas. It’s also priced and structured for large firms — enterprise contracts with seat minimums that make no sense for a solo practice. Worth knowing it exists, not worth pursuing unless you’re scaling well beyond a solo setup.

What This Comparison Actually Showed

None of these tools produced a contract I’d send to a client unedited. What they did consistently do was eliminate the blank-page problem — every tool got me from nothing to a structured first draft faster than starting from scratch, which is where the real time savings showed up, not in skipping review entirely.

Frequently Asked Questions

Can any of these tools replace an attorney’s review entirely?
No. Every output in this test needed a full attorney review pass before it would be appropriate to send to a client, regardless of which tool produced it.

Which tool is best for a true solo practitioner on a tight budget?
LegesGPT for budget, Spellbook if drafting speed and precedent-matching matter more than price.

Is it safe to paste client information into general tools like ChatGPT?
Be cautious — general-purpose AI tools don’t carry the same confidentiality and data-handling guarantees that legal-specific platforms are built around. Check your tool’s data policy and your jurisdiction’s confidentiality rules before pasting any real client details.

Do these tools know which state or country’s law applies?
Only if you tell them explicitly, and even then, treat the output as a starting point rather than confirmed legal accuracy — verify governing-law-specific clauses independently.

Final Thoughts

The honest takeaway is that AI drafting tools are genuinely useful for speed and structure, and genuinely risky if treated as a substitute for legal judgment. For more on how this fits into an actual daily practice, see our piece on how solo lawyers are using AI to cut drafting time in half, and for the research side of the equation, our breakdown of a month of AI-assisted legal research covers the other half of the workflow.