How to Use AI to Draft Motions and Briefs

1. AI-assisted brief writing: what it actually looks like

The most productive way to use AI for motion drafting is not to ask it to write an entire brief from scratch. It is to use AI as a drafting partner that handles the structural and mechanical work while you focus on strategy, persuasion, and legal judgment.

In practice, this means starting with your research. Once you have identified the key authorities and the legal framework, you outline your argument structure. Then you work section by section, using AI to produce initial drafts of each section based on your outline, the relevant authorities, and the factual record.

The AI produces a draft that follows your outline, cites the authorities you identified, and connects the legal standards to the facts. You then revise for tone, tighten the argument, add the strategic framing that AI cannot provide, and ensure the brief reads as a cohesive document rather than a collection of AI-generated paragraphs.

This workflow typically reduces first-draft time by 50 to 70 percent for routine motions. The savings are smaller for novel or complex issues where the attorney's original analysis is the primary value, but even there, AI handles the statement of facts, procedural history, and standard-of-review sections efficiently.

2. Maintaining voice and style

Every experienced litigator has a distinctive writing style. Some favor short, declarative sentences. Others build complex, multi-clause constructions that guide the reader through a chain of reasoning. Some use headers aggressively; others let the argument flow in longer sections. Judges and opposing counsel recognize your style, and it matters.

Out-of-the-box AI tends to produce generic legal prose. It is competent but bland, and it lacks the rhetorical choices that make a brief persuasive. This is the most important area to invest effort when adopting AI drafting.

Start by providing the AI with samples of your previous work. Platforms that support firm-level learning, where the AI adapts to your writing patterns over time, produce better results than tools where you have to re-explain your preferences with every session. Give explicit stylistic instructions: preferred sentence length, whether you use the Oxford comma, how you format block quotes, and your preferred transition phrases.

Irys allows you to upload prior briefs and work product so the AI learns your firm's voice. Over time, this reduces the amount of editing needed to bring AI-generated drafts in line with your standards. The goal is not to have the AI replicate your voice perfectly but to get close enough that revision is about refinement rather than rewriting.

3. Citation integration

Citations are the backbone of any brief. In AI-assisted drafting, citations should come from your verified research rather than being generated by the AI during the drafting process. This prevents the hallucination problem described in our citation verification guide.

The ideal workflow integrates research and drafting in one platform. When you conduct research within the same environment where you draft, the AI can draw directly from verified authorities rather than generating citations from its training data. Every citation in the brief links back to the source material, and you can verify the accuracy of each reference with a single click.

Pin-cite accuracy deserves particular attention. AI is better at identifying the general holding of a case than at finding the specific page where a particular proposition appears. For pin cites, verify the page number independently. Some tools automate this by linking to the specific passage in the opinion, which makes verification fast.

After drafting, run the entire brief through a citation verification check. This final pass catches any citations that were modified during editing, ensures short-form references resolve correctly, and confirms that all authorities are still good law.

4. Iterative revision with AI

Good brief writing is rewriting. AI can accelerate the revision process in ways that go beyond simple grammar and spell checking.

Argument strengthening. Ask the AI to identify the weakest points in your argument and suggest ways to strengthen them. The AI can flag where your reasoning has gaps, where your authority is thin, and where the opposing side's likely counterarguments would be most effective.

Clarity editing. AI can simplify overly complex sentences, identify passive constructions that weaken your writing, and suggest more direct phrasing. This is particularly useful for sections that were drafted quickly under deadline pressure.

Consistency review. Over the course of a long brief, inconsistencies creep in. The standard of review described in the introduction may not perfectly align with how it is applied in the argument section. Defined terms may shift. AI catches these inconsistencies faster than manual proofreading.

Counterargument anticipation. One of the most valuable AI revision techniques is to ask the system to draft the opposing side's response to your brief. This exercise reveals weaknesses you missed and helps you strengthen your argument before filing.

5. Export and formatting

Briefs ultimately need to be filed, which means they need to comply with court formatting requirements and be delivered in the appropriate file format. Any AI drafting tool you use for litigation must produce clean exports.

Word export is the most common requirement. The exported document should preserve all formatting: headers, footnotes, block quotes, tables of authorities, and page numbering. It should be immediately editable without needing to fix formatting artifacts from the export process.

Court-specific formatting rules, such as margin requirements, font restrictions, line spacing, and page limits, vary by jurisdiction and sometimes by individual judge. The best AI tools allow you to configure formatting profiles for the courts where you practice, so exports comply automatically.

Tables of contents and tables of authorities present a specific challenge. These should generate automatically from the brief content and update when the document changes. AI tools that integrate these features into the drafting environment eliminate the tedious manual process of building and updating these tables in Word.

6. Practical tips for litigators

Start with routine motions. Motions to compel, motions for extension of time, and motions in limine with established standards are ideal for AI-assisted first drafts. Build confidence with these before using AI on dispositive motions or appeals.

Provide the factual record explicitly. AI produces better fact sections when you upload the relevant deposition transcripts, declarations, or exhibits rather than summarizing the facts yourself. The AI can extract and organize the relevant facts directly from the source materials.

Use AI for the statement of facts, not for characterization. AI is reliable for organizing chronological facts and citing record evidence. It is less reliable for the strategic characterization that makes a statement of facts persuasive. Plan to heavily edit the statement of facts for tone and emphasis.

Always disclose as required. An increasing number of courts require disclosure when AI tools are used in brief preparation. Check your jurisdiction's rules and individual judge's standing orders. Compliance is straightforward and non-negotiable. Your professional obligations have not changed; only the tools have.