The 12 Best AI for Legal Drafting, Document Review & Automation

Don't you hate the mind-numbing work of drafting clauses and combing through contracts line by line? Luckily, we're not in the Stone Age.

In 2025, Artificial Intelligence (AI) comes to our rescue and creates high-quality, accurate legal drafts in a matter of minutes.

Using AI for writing legal documents is a lifesaver for the modern attorney. These tools double up as your Swiss Army knife: They draft airtight contracts, flag risks, and automate the paperwork you hate most.

Stick around, we're breaking down the 12 best AI for legal drafting and document automation in 2025. Let's dive in!

What Are AI Tools for Drafting Legal Documents?

You could save oodles of time with AI tools for drafting legal documents.

Instead of you slogging through contracts, these platforms use smart tech, natural language processing (NLP), and machine learning to do it for you. They can handle:

• Drafting contracts, filings, and forms in minutes
• Spotting risky clauses before they bite you
• Flagging what’s missing
• Auto-generating templates so you’re not starting from zero

That's a long-winded way of saying you won't have to burn $200+ an hour on admin work. AI tools put those hours back where they belong: on your billable sheet.

Top 12 AI Tools for Legal Drafting and Document Automation

It doesn't matter if you're a big firm, a small firm, or a one-lawyer show. There’s an AI tool here that will fit your practice like a glove! Let's get started.

1. CoCounsel (Thomson Reuters)

Meet the AI tool everyone’s talking about: CoCounsel! It handles drafting, reviewing, contract analysis, and litigation prep like a charm.

Powered by Thomson Reuters’ Westlaw (a leading legal research database) and Practical Law (attorney-written guides, templates, and checklists), its agentic AI makes complex workflows feel effortless.

• Ideal for: Legal writing, contract analysis, litigation prep, document review
• Key strengths: Westlaw + Practical Law integration, agentic AI for multi-step workflows, enterprise-grade security, robust document management
• Pricing: Custom pricing

If your firm needs speed, accuracy, and a serious edge at every stage of the legal drafting workflow, CoCounsel is 100% worth checking out, especially if you tackle complex legal briefs.

2. LegalOn

Accuracy is the name of the game with a top-tier AI legal writing tool like LegalOn. Built with attorney-vetted content, it’s designed to make contract review faster, safer, and a whole lot less stressful.

Plus, LegalOn uses pre-built and customizable playbooks, meaning it spots risks and suggests precise redlines so you can work through clauses with confidence.

• Ideal for: High-volume contract review, risk management, and keeping terms consistent
• Key strengths: Attorney-trained AI, ready-to-use playbooks, seamless Microsoft Word integration for in-workflow review
• Pricing: Custom/enterprise pricing

If contracts keep piling up on your desk, LegalOn should definitely be on your shortlist. It helps the legal profession tremendously.

3. HarveyAI

Big law needs big tech. Enter HarveyAI. It helps you draft smarter, review contracts faster, and dig deeper into research, all without compromising on security.

Can’t risk sloppy work or data leaks? With enterprise-grade protection through Azure, Harvey is trusted by large firms and in-house teams alike.

• Ideal for: Large law firms and corporate legal departments needing a broad-spectrum AI assistant
• Key strengths: Enterprise-grade Azure security, advanced legal research, AI-assisted drafting, and robust contract analysis
• Pricing: Custom pricing

If your firm handles massive caseloads and sensitive data, try HarveyAI. It's the kind of legal writing AI tool that offers security to keep everything running smoothly.

4. Clio Duo

Already love Clio? Clio Duo makes your day even easier. Built right into the Clio ecosystem, it takes routine tasks off your plate (analyzing documents, drafting client emails, and recommending next steps), so you can focus on real legal work.

• Ideal for: Solo practitioners and small to mid-sized firms using the Clio platform
• Key strengths: Seamless integration with Clio Manage, document analysis, smart daily task recommendations, secure data handling
• Pricing: Included as part of the Clio Suite (custom pricing)

At Clio Duo, everything runs inside a secure, legal-specific platform, meaning your legal practice data stays protected and your workflow stays smoother than butter.

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5. Gavel

Stop reinventing the wheel. Gavel is for lawyers who are done wasting hours on repeat drafting. This no-code platform lets you build logic-based workflows that generate polished documents in minutes. Need standardized agreements? Intake forms? Even client-facing apps? Gavel has you covered!

• Ideal for: Document automation, following professional and ethical standards when generating forms and agreements, and creating client-facing applications
• Key strengths: No-code workflow builder, robust template library, integrations with Clio and DocuSign
• Pricing: Custom pricing

Gavel is a legal AI that makes document automation effortless. With a robust template library and integrations with Clio and DocuSign, it slides right into your existing workflow.

6. Luminance

Luminance is a rock-solid tool, built for high-stakes contracts, including legal-specific AI solutions. It handles M&A, due diligence, and massive contract reviews for you.

As one of the leading AI platforms for legal document analysis, it can plow through mountains of files in record time, flagging anomalies and surfacing insights you’d never catch on your own.

• Ideal for: Mergers and acquisitions, due diligence, large-scale contract review
• Key strengths: Anomaly detection, jurisdiction awareness, multi-jurisdictional compliance mapping
• Pricing: Custom/enterprise pricing

When speed and accuracy can make or break millions, Luminance is a life-saving platform.

7. DocDraft

Don't pay big-firm prices just to crank out a simple contract. DocDraft keeps it cheap, fast, and painless. With a library full of templates and AI guidance baked in, you can spin up agreements, forms, or filings in minutes.

• Ideal for: Individuals, solo practitioners, and small businesses on a budget
• Key strengths: Unlimited document creation, optional attorney reviews, upfront subscription pricing
• Pricing: Tiered plans (Starter, Premium, Ultimate)

DocDraft proves you don’t need deep pockets in the legal industry to write solid legal documents. And if you want a second set of eyes, their vetted attorney network is there if you need it!

8. Spellbook

Have you already spent half your life in Microsoft Word? Then you'll love Spellbook. It slips right into Word and turns it into your contract-drafting sidekick.

It suggests stronger language, analyzes clauses, and flags risks. For transactional lawyers, it’s like finally giving Word the legal brain it should’ve had years ago.

• Ideal for: Transactional lawyers and firms who live in Microsoft Word
• Key strengths: Direct Word integration, clause analysis, risk flagging, consistency checks
• Pricing: Custom pricing

Take control of those pesky contracts with Spellbook... a stellar tool for writing legal briefs. You'll get faster drafting and smoother negotiations without leaving the Word doc you’re already working in.

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9. LegalSifter ReviewPro

Redlining contracts doesn’t have to eat up your whole afternoon. ReviewPro was built for one job: spotting issues fast. Its contract-specific AI flags missing terms, risky clauses, and compliance gaps in minutes.

With more than 2,200 pre-built “Sifters” and customizable playbooks, it adapts to your firm’s standards instead of forcing you to start from scratch.

• Ideal for: Firms and in-house teams that need fast, reliable contract reviews
• Key strengths: 2,200+ AI Sifters for issue spotting, attorney-written guidance, customizable playbooks
• Pricing: Custom pricing

ReviewPro is like hitting "fast-forward" on contract analysis. It's a great way to protect your legal expertise with the data security and accuracy it provides. Let's take the burden of legal drafting off your plate.

10. Paxton AI

Another worthy contender, Paxton AI, is built to make drafting and document analysis a breeze. It uses its own proprietary legal language models, and goes beyond surface-level edits.

With Paxton AI, you also get content suggestions, authority links, and contextual research right where you need it.

• Ideal for: Legal and business professionals needing drafting and document analysis
• Key strengths: AI-powered drafting with citations, contextual research, enterprise-grade security
• Pricing: $159/user/month with a free trial available

Paxton AI should be on your shortlist. It's brilliant AI writing gives you air-tight documents with less time lost chasing citations. Plus, with enterprise-grade security, it’s a godsend for legal professionals who can’t afford slip-ups.

11. Diligen

Take the grind out of contract review with Diligen. Its AI-powered platform quickly analyzes agreements, highlights key terms, and generates reports. Are you handling due diligence, M&A, or commercial real estate deals alone? Diligen makes sure you move a LOT faster.

• Ideal for: Due diligence, M&A, and contract review
• Key strengths: Fast, accurate contract analysis, automated extraction of key terms, comprehensive reporting
• Pricing: Custom pricing

We suggest checking this one out. Diligen helps you work smarter and close more deals for your legal services with confidence.

12. LEGALFLY

Privacy is crucial, and LEGALFLY agrees! It's an AI-native platform, built with in-house counsel and compliance pros in mind. You can hand over your drafting and document review, and trust that it won't expose sensitive data.

LEGALFLY's standout feature: Advanced anonymization that strips confidential details before processing, giving you airtight security.

• Ideal for: Corporate legal teams, in-house counsel, compliance professionals
• Key strengths: Data anonymization for privacy, Word integration, specialized AI agents for drafting/review/compliance
• Pricing: Custom/enterprise pricing

When privacy is non-negotiable, LEGALFLY comes through as a trusty legal AI tool. Plus, with Microsoft Word integration for drafting, review, and compliance, it blends into your workflow seamlessly.

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What Is the Best AI Tool for Legal Drafting?

So, which AI tool should you pick? That depends on what you need. A solo attorney on a budget might want something lightweight and affordable, while a large firm handling M&A deals needs an enterprise-grade platform with advanced analysis.

Here’s what to weigh before deciding:

• Firm size & budget: Solo vs. small firm vs. big law makes a huge difference.
• Primary need: Drafting, contract review, or full automation?
• Integrations: Does it play nice with tools you already use (Clio, DocuSign, Word)?
• Security & privacy: Non-negotiable. Look for strong data protection and compliance features.

The "best AI tool" is ultimately the one that fits your workflow, not the other way around.

Benefits of Using AI for Legal Drafting

You’ve seen the tools, you’ve weighed the options, now let’s zoom out.

The best AI tools for legal drafting are becoming the backbone of modern practice. After all, who wants to spend their $200+ billable hour buried in admin work?

By automating, you free yourself up for the work that actually grows your firm: strategy, advocacy, and client care. Here’s what that looks like in practice:

• Increased efficiency and speed
• Improved accuracy and consistency
• Reduced costs
• Enhanced risk management
• Better work allocation and skill development
• Enhanced client service

AI handles the paperwork so you can practice the law.

The Road Ahead: Why You Need AI Tools for Legal Drafting

The best AI for drafting legal documents is a game-changer!

With just one of these tools, you can sharpen accuracy, cut out 100+ hours of work, and finally spend more time on your clients (and maybe even enjoy your weekends again).

In 2025, competitive and ambitious firms use AI. And if you’re ready to pair smarter tools with a steady stream of new clients, Grow Law can make it happen.

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