Lawyers spend hours drafting and reviewing contracts. AI tools now accelerate this work — suggesting clauses, flagging risks, checking citations — while keeping the attorney in control. We compare six tools ranging from free to $500/month to help you find the right fit for your firm.
Lawyers spend hours drafting, reviewing, and redlining contracts. AI tools now accelerate this work — suggesting clauses, flagging risks, checking citations, and summarizing documents — while keeping the attorney in control. The right tool depends on your firm size, practice area, and budget.
Here's how the leading options stack up.
Spellbook is purpose-built for transactional attorneys. It integrates directly into Microsoft Word, so you get clause-by-clause drafting suggestions and real-time risk flagging without leaving your document.1 At $40/month per user, it's the most accessible dedicated contract tool on this list.1
If your core workflow is drafting and reviewing contracts in Word, Spellbook is the clear top pick. It doesn't try to be a research platform or a deposition summarizer — it focuses on contracts, and it does that well.
CoCounsel is an enterprise-grade AI legal assistant that goes well beyond drafting. It handles conversational legal research, document review, and deposition summarization with a reliability standard backed by Thomson Reuters.2 At $500/month per user, it's a serious investment aimed at firms that need breadth across multiple practice areas and workflows.2
This is the tool for large firms where drafting is just one piece of a broader AI-assisted practice. If you need research, review, and drafting in one platform and can justify the cost, CoCounsel delivers.
Robin AI brings professional contract review to solo practitioners with a generous free tier.3 Its standout features include meticulous version hygiene, a defined-terms checker, and side-by-side diffs — all accessible through a Word add-in.3
For lawyers who can't justify $40–$500/month but still want AI-assisted contract review, Robin AI is the most accessible entry point. The free tier lowers the barrier without stripping away the features that matter for careful contract work.
Lexis+ AI layers an AI assistant (called Protégé) on top of the comprehensive LexisNexis legal database, offering conversational research and automated citation verification.4 It's subscription-based, with pricing tied to LexisNexis's enterprise licensing model.4
If your drafting is inseparable from legal research — pulling precedents, verifying citations, checking case law — Lexis+ AI integrates those workflows in a way standalone drafting tools can't match. It's the natural choice for firms already in the LexisNexis ecosystem.
Relaw.ai positions itself as a comprehensive AI platform across all practice areas. It offers a native Word add-in for drafting, an AI notetaker, and smart client intake — all starting at $99/month.5
For mid-size firms that want more than just contract drafting but can't justify CoCounsel's $500/month price tag, Relaw.ai sits in the middle ground. The notetaker and intake features make it attractive for firms where drafting is one of several AI-assisted workflows.
Most AI tools process your prompts on cloud servers you don't control. For attorneys with strict client confidentiality obligations, that's a real concern. LibertAI offers decentralized AI inference that runs inside a Trusted Execution Environment (TEE), keeping prompts and completions confidential.8 It's OpenAI-compatible, so you can use it as a private alternative for drafting assistance, research queries, or any task involving sensitive client data.8
This isn't a dedicated legal tool — it's a privacy-first LLM platform. But if confidentiality is non-negotiable, it's worth knowing about.
Two additional tools came up in research that serve adjacent needs:
| Profile | Recommended Tool |
|---|---|
| Transactional attorney, contract-focused | Spellbook |
| Large firm, multi-workflow | CoCounsel |
| Solo or small firm, budget-conscious | Robin AI |
| Research-heavy practice | Lexis+ AI |
| Mid-size firm, multi-practice | Relaw.ai |
| Confidentiality-first | LibertAI Chat |
The biggest differentiator across these tools is Word integration — most lawyers live in Word, and the tools that embed directly (Spellbook, Robin AI, Relaw.ai) reduce friction the most. Price ranges from free (Robin AI) to $500/month (CoCounsel), so there's an option at every budget level.
AskBuy may earn a commission when you sign up through links on this page. This doesn't affect our recommendations — we pick tools based on fit for the use case, not affiliate terms.
This page was written by the engine and the engine is still on the line. The conversation below picks up where the article stops.
Yes — the picks above are the engine's current verdicts. Ask a sharper version of this question below and you'll get a custom answer with the latest pricing.