How to Use AI for Legal Writing: A Practical Guide for Attorneys
AI is reshaping legal practice, and legal writing is one of the clearest areas where it can save time and improve workflow. For attorneys, AI is not a replacement for legal judgment. It is a practical tool for drafting, editing, summarizing, and researching more efficiently.
If you are evaluating how to use AI for legal writing, the key is to choose tools that fit your workflow, use them carefully, and always review the output before relying on it in client work or filings.
Why AI Matters in Legal Writing
Legal writing is time-consuming. Attorneys often need to research authorities, organize arguments, draft documents, and refine language under tight deadlines. AI can help speed up many of those steps.
Used well, AI can:
- generate first drafts of routine legal documents
- summarize case law, contracts, and long documents
- suggest clearer wording and stronger structure
- surface relevant authorities faster
- help spot inconsistencies or missing points in a draft
The main value is not replacing legal work. It is reducing the amount of time spent on repetitive tasks so attorneys can focus on analysis, strategy, and client service.
Best AI Tools for Legal Writing
The legal AI market is growing quickly. Different tools serve different needs, so the best option depends on whether you want help with drafting, research, editing, or document review.
1. Harvey AI
Harvey AI is an AI legal assistant designed for research, drafting, and due diligence. It is built for legal workflows and is aimed at firms that need a broad solution across multiple tasks.
Why it is useful:
- helps draft legal documents from prompts
- supports legal research and issue spotting
- can handle complex, nuanced queries
Best for:
- larger firms
- legal departments
- teams that need an enterprise-level AI solution
Pros:
- strong legal-focused capabilities
- suited to complex work
- can adapt to firm-specific workflows
Cons:
- higher cost
- more implementation effort
- may be more than smaller practices need
2. Lexis+ AI
Lexis+ AI brings generative AI into the LexisNexis research environment. It allows users to ask questions in natural language, summarize material, draft content, and conduct legal research in one place.
Why it is useful:
- keeps research and drafting in the same workflow
- reduces context switching
- works well for attorneys already using LexisNexis
Best for:
- attorneys who already rely on LexisNexis
- research-heavy practices
- drafting pleadings, motions, and client communications
Pros:
- integrated with a large legal content library
- familiar environment for existing users
- combines research and drafting support
Cons:
- can be expensive
- tied to the broader LexisNexis ecosystem
3. CoCounsel by Casetext
CoCounsel is designed to help with document review, legal research, deposition preparation, and contract analysis. It focuses on practical legal tasks that take time and attention.
Why it is useful:
- speeds up document-heavy work
- summarizes and analyzes legal materials
- helps identify key clauses and issues quickly
Best for:
- litigation support
- due diligence
- contract review
- solo and mid-sized firms
Pros:
- useful for high-volume tasks
- practical interface
- strong focus on legal use cases
Cons:
- less broad than some enterprise platforms
- pricing may be a factor for very small firms
4. WordRake
WordRake is an AI-powered editing tool built to improve clarity, concision, and correctness in legal writing.
Why it is useful:
- catches awkward phrasing
- improves readability
- helps polish drafts before filing or sending
Best for:
- attorneys who want stronger final drafts
- emails, motions, briefs, and client-facing writing
Pros:
- strong editing support
- easy to use in existing writing workflows
- helpful for quick improvement of drafts
Cons:
- focused on editing rather than drafting or research
- not designed for deep legal analysis
5. ChatGPT
ChatGPT is a general-purpose AI tool that can help generate text, summarize information, explain concepts, and draft basic materials.
Why it is useful:
- good for brainstorming
- can help create outlines or rough drafts
- useful for simplifying complex ideas
Best for:
- early drafting
- quick explanations
- small firms exploring AI cautiously
Pros:
- accessible
- versatile
- often low-cost or free to start
Cons:
- not legally specialized
- output must be carefully reviewed
- confidentiality and data privacy need close attention
6. Casetext Core AI Features
Casetext’s core AI research tools help attorneys find relevant cases and legal arguments faster through natural language search and AI-assisted discovery.
Why it is useful:
- improves legal research speed
- helps surface relevant authorities
- supports the research stage of legal writing
Best for:
- litigators
- transactional attorneys
- research-intensive work
Pros:
- strong research functionality
- useful for finding material that might otherwise be missed
- streamlines the start of drafting
Cons:
- less focused on generative drafting
- usually subscription-based
7. AI Tools from Major Legal Publishers
Large legal publishers, including Thomson Reuters, are adding AI features to their existing platforms. These tools typically use the publisher’s own legal databases to support drafting, summarizing, clause review, and consistency checks.
Why it is useful:
- built around trusted legal content
- fits existing legal research workflows
- often easier to adopt for current subscribers
Best for:
- firms already using legal publisher platforms
- attorneys who want AI added to current tools
- workflow augmentation rather than full replacement
Pros:
- integrated with authoritative legal content
- designed with legal workflows in mind
- familiar to many attorneys
Cons:
- can be costly
- strongest value is often within the existing ecosystem
How to Choose the Right AI Tool for Legal Writing
The right tool depends on what you need most. Before choosing, consider the following:
Primary use case
Do you need help with drafting, research, editing, or document review? Different tools are built for different tasks.
Firm size and budget
Solo practitioners and small firms may prefer lower-cost or narrower tools. Larger firms may justify broader enterprise platforms.
Existing systems
If your firm already uses a legal research platform, an AI add-on within that system may be easier to adopt.
Level of legal specificity
General-purpose AI can be helpful, but legal-specific tools usually provide better results for professional work.
Security and confidentiality
Client data should only be entered into tools with clear privacy terms, secure handling, and appropriate safeguards.
A practical approach is to start with the biggest pain point first, then expand your toolset once you know what produces the most value.
How to Use AI for Legal Writing Effectively
Using AI well matters as much as choosing the right tool. A few practical habits can improve results:
- Give specific prompts. The more precise your instructions, the better the output.
- Use AI for first drafts, not final drafts. Treat AI output as a starting point.
- Verify every legal claim. Check cases, citations, dates, and jurisdiction.
- Review for tone and audience. Legal writing should remain appropriate for the court, client, or opposing counsel.
- Edit for consistency. Make sure the AI draft matches your terminology, argument style, and formatting requirements.
- Protect confidential information. Avoid sharing sensitive material unless the platform is approved for legal use.
- Keep human oversight in place. Attorneys remain responsible for the final work product.
Pricing and Value Considerations
AI tools for legal writing vary widely in cost. Some general-purpose tools are inexpensive or offer free tiers, while specialized legal platforms often use subscription pricing.
When evaluating cost, look beyond the monthly fee. Consider:
- time saved on drafting and research
- reduction in editing and cleanup work
- fewer missed issues or inconsistencies
- faster turnaround for clients
- overall fit with your practice
A more expensive tool may still be worthwhile if it saves enough time or improves workflow quality. Free trials are useful for testing whether a tool actually fits the way you work.
Frequently Asked Questions About AI for Legal Writing
Can AI replace lawyers in legal writing?
No. AI can support drafting and editing, but lawyers still need to provide judgment, strategy, and final review.
Are AI-generated legal documents accurate?
They can be useful, but accuracy depends on the tool, the prompt, and the review process. Every output should be checked by a qualified attorney.
What are the main ethical concerns?
The main concerns are confidentiality, accuracy, competence, transparency, and proper use of technology in legal work.
How can I keep client data secure?
Use reputable tools with clear security and privacy policies. Do not input sensitive client information into a platform unless its data handling is acceptable for legal use.
Does AI create plagiarism risk in legal writing?
AI can produce text that resembles common legal phrasing or familiar patterns. Attorneys should still review for originality, proper citation, and accuracy.
Conclusion
AI is becoming a practical part of legal writing, not a theoretical future tool. Attorneys who learn how to use it carefully can improve speed, clarity, and consistency without sacrificing quality.
The best approach is to start with a clear use case, choose a tool that fits your workflow, and keep human review at the center of the process. Used this way, AI can support better legal writing and help attorneys work more efficiently in a competitive environment.