After the infamous Mata v. Avianca case: where a lawyer submitted AI-generated fake citations: courts across the country started requiring AI disclosure in legal filings. The rules are evolving fast. Here’s what you need to know.

The Current Landscape

As of 2026, AI disclosure requirements vary by jurisdiction:

• Federal courts: Several districts require disclosure of AI use in legal filings. The specific requirements vary: some require a certification that AI-generated content was verified, others require disclosure of which AI tools were used.
• State courts: A patchwork of rules. Some states have adopted disclosure requirements, others are still developing them, and many have no specific rules yet.
• Bar associations: Most state bars have issued guidance (not rules) on AI use. The common thread: lawyers remain responsible for the accuracy of everything they file, regardless of how it was created.

The Safe Approach

Regardless of your jurisdiction’s specific rules:

1. Always verify citations. Every case, statute, and regulation cited in a filing must be verified against primary sources. AI hallucinations are real and can result in sanctions.
2. Disclose when required. If your court requires AI disclosure, comply fully. When in doubt, disclose: over-disclosure is never sanctioned.
3. Maintain competence. You must understand the AI tools you use well enough to evaluate their output. “The AI told me” is not a defense.
4. Document your process. Keep records of how AI was used, what was verified, and by whom. This protects you if questions arise.

What Courts Actually Care About

Courts don’t care whether you used AI. They care whether:

• The legal analysis is accurate
• The citations are real and correctly cited
• The arguments are relevant and well-reasoned
• You exercised professional judgment

AI is a tool, like Westlaw or a legal secretary. The lawyer’s obligation to verify and take responsibility hasn’t changed: only the tools have.

A Practical Disclosure Template

If your jurisdiction requires or recommends disclosure, keep it simple. Here’s a template you can adapt:

“Pursuant to [Local Rule/Standing Order], counsel discloses that artificial intelligence tools were used in the preparation of this [filing type] for [specific purpose: e.g., legal research, drafting, citation checking]. All AI-generated content has been reviewed, verified, and edited by counsel. All citations have been confirmed against primary sources. Counsel takes full responsibility for the contents of this filing.”

Adjust based on your court’s specific requirements. Some courts want to know which tool you used; others just want confirmation that you verified the output.

Building an AI Use Policy for Your Firm

Don’t wait for a court to ask questions. Create an internal policy now:

“Create an AI use policy for a [size] law firm. Cover: approved AI tools, prohibited uses (e.g., uploading client-privileged information to public AI tools), verification requirements for AI-generated content, citation checking procedures, disclosure obligations by jurisdiction, and training requirements for associates. Keep it to 2 pages.”

Having a written policy protects the firm and gives associates clear guardrails. Review it every six months as court rules evolve.

Related reading: AI Ethics in Legal Practice · AI Client Confidentiality · AI Won’t Replace Lawyers

🛠️ Draft legal documents responsibly: Try our Legal Document Drafter: always review before filing.

The Bottom Line

The tools and approaches covered here represent the current best options for lawyers in 2026. The landscape changes fast: new tools launch monthly and existing ones add features quarterly. But the fundamentals stay the same: pick tools that solve real problems you have today, start with the simplest option that works, and only upgrade when you’ve outgrown what you have.

The biggest risk isn’t choosing the wrong tool: it’s analysis paralysis. Lawyers who spend three months evaluating options lose more productivity than those who pick a “good enough” tool and start using it immediately. You can always switch later; you can’t get back the time spent deliberating.

Key Takeaways

• Start with free tools before investing in paid subscriptions: most offer enough for initial testing
• Measure time saved weekly to justify continued investment in any tool or workflow
• Build a personal library of prompts and templates that work for your specific use cases
• Review and update your AI workflows quarterly as tools improve and your needs evolve
• Connect with peers in your industry who use similar tools: shared templates save everyone time

FAQ

Do all courts require disclosure of AI use in legal filings?

No. Requirements vary by jurisdiction. Several federal district courts require AI disclosure, but state courts have a patchwork of rules: some have adopted requirements, others are still developing them, and many have no specific rules yet. When in doubt, disclose proactively. Over-disclosure is never sanctioned.

What happens if I don’t disclose AI use when required?

Failure to comply with local disclosure rules can result in sanctions, fines, and reputational damage. More seriously, if AI-generated content contains errors (such as hallucinated citations), the lack of disclosure compounds the ethical violation. Courts have imposed sanctions ranging from $5,000 fines to referrals to disciplinary authorities.

What should an AI disclosure statement include?

A basic disclosure should identify that AI tools were used, specify the purpose (e.g., research, drafting, citation checking), confirm that all content was reviewed and verified by counsel, state that citations were confirmed against primary sources, and affirm that counsel takes full responsibility for the filing’s contents.

Can I use AI for legal research without disclosing it?

Technically, in jurisdictions without specific disclosure rules, you’re not required to disclose AI use. However, your ethical obligation to verify all citations and ensure accuracy remains regardless. The safe approach is to disclose proactively: it builds trust with the court and protects you if questions arise later.

Should my firm create an internal AI use policy even if our courts don’t require disclosure?

Yes. A written internal policy protects the firm by giving attorneys clear guardrails, reduces the risk of accidental confidentiality breaches, and demonstrates good faith if a court or bar association ever questions your AI practices. Review the policy every six months as rules evolve rapidly.