AI & Lawyer Ethics
How Vaquill AI helps lawyers meet their ABA and state-bar AI obligations.
ABA Formal Opinion 512 (July 29, 2024) formally extends Model Rule 5.3 supervisory duties to generative AI, and the ABA has made clear that competent use of AI is now an ethical requirement under Model Rule 1.1. Vaquill AI is built with those rules in mind: verification to back up your Rule 1.1 duty, confidentiality controls to back up Rule 1.6, and audit logs plus lawyer-review workflows to back up Rule 5.3.
Plain-English summary
Issued July 29, 2024
The core point of ABA Formal Opinion 512 is that generative AI counts as “non-lawyer assistance” under Model Rule 5.3, so lawyers have supervisory and due-diligence duties over the AI tools they use. The opinion also connects several other Model Rules to AI use.
Key duties the opinion identifies:
- Competence (1.1), understand what the tool does and its limits
- Confidentiality (1.6), protect client information from unauthorized disclosure
- Communication (1.4), keep clients reasonably informed about their matter
- Supervision (5.3), due diligence over AI assistance and human-in-the-loop review
- Reasonable fees (1.5), bill ethically and disclose where required
How Vaquill AI supports each Rule
We map Vaquill AI's features directly to the Model Rules most often implicated by AI use.
Competence
Duty: Lawyers must stay reasonably informed of the benefits and risks of relevant technology, including generative AI.
How Vaquill AI supports it:
- 4-layer citation verification catches hallucinated cases before you see them
- Plain-English training materials and walkthroughs in our Help Center
- Release notes explain every model and feature change, so you know what your tool does today
Confidentiality
Duty: Lawyers must protect client information and make reasonable efforts to prevent unauthorized disclosure.
How Vaquill AI supports it:
- We never train on your data
- Zero-data-retention agreements with our model sub-processors (including OpenAI and Anthropic)
- AES-256 encryption at rest, TLS 1.3 in transit
- US data residency on Amazon Web Services
- Row-level tenant isolation, your firm’s data never mixes with another firm’s
Supervision of Non-Lawyer Assistance
Duty: Lawyers must make reasonable due-diligence and supervisory efforts over non-lawyer assistance, which ABA Formal Opinion 512 confirms includes generative AI tools.
How Vaquill AI supports it:
- Every AI output is reviewable before it leaves your workspace
- Citations are verified automatically, but we explicitly require lawyer review
- Audit logs show who ran what query, when, useful for supervising associates and satisfying Rule 5.3
Reasonable Fees
Duty: Fees must be reasonable; some jurisdictions (notably Florida Opinion 24-1) require disclosure when AI meaningfully affects billing.
How Vaquill AI supports it:
- Usage reporting shows how much time AI saved on a matter
- Guidance on when disclosure may be appropriate under your state’s rules
- Sample fee-disclosure language you can adapt (see templates below)
Communication
Duty: Lawyers must keep clients reasonably informed about how their matter is being handled.
How Vaquill AI supports it:
- Sample client-disclosure templates you can attach to engagement letters
- Clear language for explaining AI-assisted research to non-lawyer clients
State-by-state AI guidance
A quick tour of the priority states. Always consult your state bar for current, authoritative guidance.
California
California State Bar Practical Guidance for the Use of Generative AI (Nov 2023, with subsequent updates)
California has issued practical guidance on generative AI that touches competence (MRPC 1.1) and confidentiality (MRPC 1.6). The guidance emphasizes due diligence on vendors and protecting client information when using cloud-based AI.
How Vaquill AI helps
Our security page documents exactly the vendor diligence California expects: no training on your data, sub-processor list, encryption, and data residency.
New York
NYC Bar Formal Opinion 2024-5 (generative AI in practice); New York CLE AI-competency credits
New York has published guidance on using generative AI responsibly in practice and now requires AI-competency CLE credits in each reporting cycle.
How Vaquill AI helps
Our Help Center walkthroughs and release notes are written to give you the substantive AI-literacy context New York’s competency guidance expects.
Texas
Texas Opinion 705 (Feb 2025)
Texas Opinion 705 emphasizes a human-verification duty for AI-generated content, particularly citations. Lawyers cannot outsource final verification to the tool.
How Vaquill AI helps
In Texas, every Vaquill AI citation is automatically verified against source documents or our case-law index. You still review, but the leg work is done for you.
Florida
Florida Opinion 24-1 (Jan 2024)
Florida Opinion 24-1 addresses generative AI and requires disclosure to clients when AI use affects fees or billing. It also reminds lawyers of their confidentiality obligations.
How Vaquill AI helps
Usage reporting helps you decide when disclosure is required. See our sample fee-disclosure language below.
Illinois
Light-touch guidance generally echoing ABA Formal Opinion 512
Illinois has generally aligned with ABA Formal Opinion 512: competence, confidentiality, supervision, and reasonable-fee duties all apply to AI tools.
How Vaquill AI helps
Vaquill AI is designed around the ABA 512 duty framework, so if your state follows ABA 512, you already have the evidence you need.
DC, New Jersey, Massachusetts
Light-touch guidance; lawyers should consult their bar directly
DC, New Jersey, and Massachusetts have issued light-touch guidance or statements generally consistent with ABA Formal Opinion 512. Specific opinion numbers and publication dates evolve, check your state bar for the current version.
How Vaquill AI helps
Our feature set (verification, audit logs, disclosure templates) maps to the ABA 512 duties these states echo.
State bar guidance is evolving quickly. Opinion numbers, dates, and details change; always verify with your state bar before relying on any summary.
Sample templates for your firm
Starter templates you can adapt for your firm. Always review with your state bar's current rules. Email contact@vaquill.ai and we'll send you the latest versions.
Sample Client Disclosure Letter
Language you can attach to engagement letters letting clients know how AI is used in their matter, aligned with Rule 1.4.
Request templateSample Firm AI Use Policy
A short internal policy for 1–15 lawyer firms covering approved tools, confidentiality, verification, and supervision.
Request templateSample AI Audit Log Template
A lightweight log you can use to document AI-assisted work for Rule 5.3 supervisory purposes.
Request templateSample Fee Disclosure Language
Plain-English fee-disclosure language modeled on the principles in Florida Opinion 24-1.
Request templateCourts have sanctioned lawyers for AI misuse
Since Mata v. Avianca (2023), courts across the US have sanctioned lawyers for filing briefs that cited fabricated, AI-generated cases. Successor cases in 2024 and 2025 have kept the trend alive, fines, referrals to the bar, and embarrassing public orders.
Vaquill AI's 4-layer citation verification is designed to prevent exactly this. But you, the lawyer, remain the last line of defense. We verify every citation against source documents and our case-law index, and we require lawyer review before anything leaves your workspace.
Frequently asked ethics questions
Can I ethically bill for time saved by AI?
Generally yes, but with care. ABA Formal Opinion 512 analyzes this under Model Rule 1.5 (reasonable fees), and Florida Opinion 24-1 specifically addresses disclosure when AI use affects billing. Practically: do not bill for hours you did not work, and disclose AI use where your jurisdiction requires it or where your engagement letter requires it.
Do I need to tell my client I’m using AI?
It depends on your jurisdiction. Florida (Opinion 24-1) expressly requires disclosure where AI meaningfully affects fees. Other states are silent or guide lawyers toward disclosure when AI affects the handling of the matter in a material way. Your engagement letter is often the cleanest place to handle this.
Is Vaquill AI a "non-lawyer" under Rule 5.3?
Yes. ABA Formal Opinion 512 treats generative AI as non-lawyer assistance under Model Rule 5.3. Vaquill AI is built to support that supervisory duty, every output is reviewable before use, citations are automatically verified, and audit logs show who ran what.
How does Vaquill AI prevent hallucinated citations?
Every Vaquill AI answer runs through 4-layer verification before you see it: exact text match, citation resolution, meaning analysis, and AI cross-check. Citations that fail any layer are flagged with a confidence label so the lawyer knows exactly where to focus the bar-required review. Source PDFs are surfaced inline with the cited passage highlighted, so verifying takes seconds.
Questions about AI ethics for your firm?
Whether you're a solo lawyer or managing partner at a 15-lawyer firm, we're happy to walk through how Vaquill AI maps to your state's AI rules.
Not legal advice. This page summarizes publicly available ethics guidance for educational purposes. It is not legal advice and is not a substitute for independent legal judgment. Consult your state bar and your own counsel for authoritative guidance on your obligations.