How to Use AI for Legal Writing: A Practical Guide for Lawyers
AI is changing how legal professionals draft, research, review, and communicate. What once felt experimental is now part of everyday legal work for many firms and in-house teams. If you want to understand how to use AI for legal writing in a way that is practical, efficient, and professionally responsible, this guide breaks down the key use cases, tools, and considerations.
Why AI Matters for Legal Writing
Legal writing demands precision, speed, and consistency. Drafting contracts, briefs, memos, client updates, and internal analyses can take significant time, especially when the work involves repeated formatting, clause comparison, or research-heavy analysis.
AI can help legal professionals:
- Work more efficiently by reducing time spent on repetitive drafting and review tasks
- Improve consistency by flagging missing language, formatting issues, and drafting gaps
- Speed up research by surfacing relevant cases, statutes, and source materials faster
- Simplify contract review by identifying clauses, risks, and deviations from standard language
- Improve client communication with clearer summaries and updates
- Stay competitive by adopting tools that support faster turnaround and better workflow management
AI should be treated as a drafting and analysis assistant, not a replacement for lawyer judgment. The real value comes from combining automation with careful legal review.
Best AI Tools for Legal Writing
Different AI tools serve different legal workflows. Some are built into major research platforms, while others focus on drafting or contract review.
1. Lexis+ AI
Lexis+ AI is integrated into the LexisNexis research platform and combines AI-powered search, summarization, and drafting assistance.
What it does:
- Supports conversational legal research
- Helps generate draft clauses and document language
- Summarizes legal materials and lengthy documents
- Assists with finding supporting authorities using natural language queries
Why it is useful:
It keeps research and drafting inside a familiar legal research environment, which can save time and reduce workflow disruption.
Best for:
Lawyers who already use LexisNexis and want to improve research and drafting within one platform.
Pros:
- Strong integration with a legal research database
- Easy to use for familiar Lexis users
- Useful for drafting, summarization, and authority-finding
Cons:
- Requires a LexisNexis subscription
- May be costly for smaller firms or solo practitioners
2. Westlaw Precision
Westlaw Precision brings AI-enhanced features into the Westlaw research ecosystem.
What it does:
- Improves legal search using AI
- Summarizes rulings and documents
- Helps generate draft materials from prompts
- Supports legal research and synthesis
Why it is useful:
It helps users work faster inside a platform many legal professionals already rely on for research.
Best for:
Litigators and transactional lawyers who use Westlaw as their primary research tool.
Pros:
- Built on a trusted research platform
- Useful for research, summarization, and drafting
- Familiar interface for Westlaw users
Cons:
- Requires a Westlaw subscription
- Advanced features may depend on pricing tier
3. Casetext CoCounsel
CoCounsel is an AI legal assistant designed for a wide range of legal tasks, including research, drafting, document review, and deposition prep.
What it does:
- Summarizes documents
- Identifies key issues
- Assists with legal research
- Drafts initial versions of legal documents
- Supports due diligence and review tasks
Why it is useful:
It offers broad functionality and can support both writing and analysis across multiple legal workflows.
Best for:
Firms of all sizes that want a versatile AI assistant for drafting and research.
Pros:
- Broad feature set
- Useful for complex legal work
- Designed specifically for legal professionals
Cons:
- Can be expensive compared with simpler tools
- Requires careful review of outputs
4. Harvey AI
Harvey AI is positioned as a more advanced legal assistant for research, drafting, contract analysis, and due diligence.
What it does:
- Assists with legal research
- Analyzes contracts
- Supports due diligence
- Helps draft legal content and summaries
Why it is useful:
It is designed to handle large volumes of complex legal material and can support teams working on sophisticated matters.
Best for:
Large law firms, corporate legal teams, and high-volume legal departments.
Pros:
- Strong capabilities for complex work
- Suitable for enterprise-scale use
- Useful for research-intensive and document-heavy matters
Cons:
- Typically aimed at larger organizations
- May involve higher pricing and longer implementation
5. AIDraft.law
AIDraft.law focuses on AI-powered legal drafting.
What it does:
- Helps create first drafts of agreements, pleadings, motions, and similar documents
- Uses prompts and templates to generate document language
- Speeds up the initial drafting stage
Why it is useful:
It helps lawyers get from blank page to working draft faster, especially for routine documents.
Best for:
Solo practitioners, small firms, and legal teams that produce a high volume of repeatable documents.
Pros:
- Focused on drafting
- Can save time on first drafts
- May be more affordable than larger AI suites
Cons:
- Less broad than full legal AI platforms
- Usually needs more manual editing and customization
6. TermScout
TermScout is built for AI-powered contract review and analysis.
What it does:
- Identifies key clauses
- Flags risks and deviations from standard terms
- Helps review contracts for compliance and consistency
Why it is useful:
It reduces the time and effort needed to review contracts while helping teams catch important issues early.
Best for:
Transactional lawyers, in-house legal teams, and contract managers.
Pros:
- Specialized for contract review
- Helps improve speed and consistency
- Useful for risk identification
Cons:
- Narrower focus than general legal writing tools
- May need to be paired with other software for drafting
7. LawGeex
LawGeex provides AI-powered contract review and approval workflows.
What it does:
- Reviews contracts against company playbooks and policies
- Flags risks and suggested revisions
- Helps standardize review and approval processes
Why it is useful:
It supports faster contract turnaround while helping teams maintain internal consistency.
Best for:
In-house legal teams and businesses handling a high volume of contracts.
Pros:
- Strong contract review capabilities
- Supports standardization and compliance
- Fits well into contract workflow processes
Cons:
- Focused mainly on contract review
- Less useful for broader legal drafting tasks
How to Choose the Right AI Tool
The best AI tool for legal writing depends on your workflow, practice area, budget, and existing systems.
Consider these factors:
- Primary use case: Decide whether you need help with research, drafting, contract review, or document analysis.
- Integration: If you already use LexisNexis or Westlaw, their AI tools may fit most smoothly into your workflow.
- Firm size and budget: Enterprise tools often offer broader functionality but may be too expensive for smaller practices.
- Level of control: AI works best when lawyers review, revise, and validate the output. Choose a tool that supports your preferred level of oversight.
- Trial access: Demos and trials are useful for testing whether a tool fits your day-to-day work.
Pricing and Value Considerations
AI legal writing tools vary widely in price. Some are included in existing legal research subscriptions, while others are standalone products with tiered pricing.
When evaluating cost, consider:
- Time savings: How much drafting or research time will the tool reduce?
- Quality improvements: Will it help reduce errors or improve consistency?
- Workflow impact: Will it make your team more efficient or responsive?
- Scalability: Can the tool grow with your practice?
- Hidden costs: Check for training, setup, integration, or data migration fees
A good AI tool should be evaluated as a practice investment, not just another software expense.
How to Use AI for Legal Writing Effectively
If you are learning how to use AI for legal writing, start with a practical workflow:
1. Define the task clearly
Be specific about what you want the AI to do. For example, ask it to draft a clause, summarize a case, or reorganize a memo outline.
2. Use AI for the first draft
Let AI handle the initial version of a document so you can focus on legal analysis, strategy, and customization.
3. Review everything carefully
Check facts, citations, formatting, jurisdiction-specific language, and legal accuracy before using the output.
4. Edit for tone and precision
AI drafts often need refinement to match your firm’s style, the audience, and the legal issue involved.
5. Keep human oversight in place
AI can accelerate the process, but legal judgment, confidentiality, and ethical responsibility remain with the lawyer.
Frequently Asked Questions
Can AI replace lawyers in legal writing?
No. AI can support drafting and research, but it cannot replace legal judgment, ethics, or client responsibility.
How do I make sure AI-generated legal content is accurate?
Always review and edit the output. Verify citations, confirm facts, and check that the content fits the relevant jurisdiction and purpose.
Is client data secure when using AI legal writing tools?
Security depends on the provider. Review privacy policies, security measures, and compliance commitments before using any tool with client information.
What are the ethical concerns?
Key concerns include confidentiality, accuracy, competence, and ensuring that AI use complies with professional rules and local requirements.
Can AI help with specialized legal writing?
Yes. More advanced tools can assist with specialized tasks like complex litigation support or technical drafting, but human review remains essential.
Conclusion
AI is becoming a practical part of modern legal writing. Whether you need faster research, better first drafts, or more efficient contract review, the right tool can save time and improve workflow without replacing lawyer oversight.
The best approach is to choose a tool based on your actual needs, test it in your existing process, and use it as an assistant rather than a substitute for professional judgment. For legal professionals looking to improve efficiency and quality, AI can be a valuable addition to the writing toolkit.