Your Lawyer is Using AI and Not Telling You

June 9, 2026

Your lawyer is almost certainly using AI to do work on your matter. There is a very good chance you were never told.

AI is the easiest way for your lawyer to juice income at your expense ever invented. Your lawyer charges by the hour. AI frees up those hours. Unless someone tells you otherwise, your lawyer keeps the difference. It would be foolish not to use it.

The 2025 ABA Tech Survey found that 79% of AmLaw 200 firms have deployed generative AI tools internally, and few disclose it. At most large firms, AI is on your matter and the engagement letter does not mention it.

What Your Lawyer Is Actually Doing With AI

AI is being used for the same four tasks that anchor most legal bills:

Drafting first-pass research memos, filings and contracts that used to be a junior associate's afternoon.
Reviewing agreements and other documents.
Summarizing diligence materials.
Conducting initial legal research and case-law citation gathering.

These are not exotic edge uses. They are the day-to-day work of tens of thousands of attorneys that historically anchored the legal industry's hourly revenue model.

Why Your Lawyer Is Hiding AI Use

Here is a simple example. A 6-hour research memo at $625 per hour is $3,750 of revenue. The same memo produced in 30 minutes by a competent attorney working with a competent AI assistant is, at most, $312. Disclosing the AI use costs your lawyer $3,438 per memo. The structural incentive runs the wrong way.

Most engagement letters predate the production deployment of GAI tools and do not address AI usage. Most bar associations have guidance that is still being written. Most lawyers have made the rational choice to keep the savings inside the practice.

How Your Lawyer Will Defend the Bill When You Ask

None of your lawyer's three predictable defenses excuses the disclosure gap: that AI requires senior review, that AI is a tool like any other research database, or that AI does not change the hourly cost structure.

What Ethics Rules Across the Country Say About AI Billing

Disclosure of material AI use is the trajectory of professional ethics, not the exception. ABA Model Rule 1.5 requires reasonable fees. ABA Model Rule 1.4 requires informed communication. ABA Formal Opinion 512 (July 2024) requires competent AI use, confidentiality protections including not training the provider's model on your work product, and may require fee transparency. The NYSBA Task Force on AI Report (2024) recommends per-matter client disclosure. The California State Bar (2023) and Florida Bar Opinion 24-1 (January 2024) point in the same direction.

An Example: What Hidden AI Looks Like on Your Invoice

Hidden AI on a senior associate's invoice can hide $2,700 per line item. An 8-hour research memo at $675 per hour bills $5,400, while the actual time with AI assistance is closer to 4 hours, or $2,700. The $2,700 gap is the disclosure problem on a single line.

What Your Engagement Letter Should Say About AI

Five clauses force the disclosure problem to be addressed in writing: AI disclosure, confidentiality protection (no training the provider's model on your work product), efficiency adjustment, transparency on AI tool costs, and audit rights.

How to Spot AI Use on Your Invoice

Four patterns reveal hidden AI: high hours on tasks AI handles routinely, round-number time entries with polished narrative output, identical phrasing across deliverables, and missing AI tooling line items.

What to Ask Your Lawyer About AI

Ask in writing: do you use generative AI tools on my matter, does my engagement letter address AI usage, how does AI use appear on my bill, and have you adjusted staffing assumptions to reflect AI efficiency gains?

What to Do If the Conversation Goes Nowhere

Upload your invoice to Overbilled. The analysis flags every line item where billed time significantly exceeds what AI-assisted work should require, benchmarks every rate against market data and produces a negotiation package you can hand to your lawyer.