Background
Cynthia Hulse-Gibson, representing herself without counsel (pro se), appealed a decision from the Circuit Court for Hillsborough County. The opposing party, Charlie Hulse, was represented by counsel. Hulse-Gibson filed appellate briefs in which she relied on generative AI to assist with legal research and citation of authorities.
Upon review, the appellate court discovered that Hulse-Gibson’s briefs contained numerous mismatches between the purported legal propositions, case names, and reporter citations. The briefs appeared to contain false quotes and statements of law attributed to real cases—a problem the court recognized as increasingly common with the misuse of generative AI in legal writing.
The Court’s Holding
The court affirmed the lower court’s orders without expressing substantive disagreement with the underlying judgment. However, the panel used the appeal as an opportunity to issue a cautionary statement regarding the use of generative AI in pro se legal filings.
The court emphasized that those who use generative AI to assist with legal research and brief writing must exercise special care to validate results before signing and filing documents. The court noted that by filing, each signer represents under Florida Rule of General Practice and Judicial Administration 2.515(d)(2) that “the legal authorities identified exist and are accurately cited.” Failure to comply with this certification requirement exposes pro se litigants—and represented parties—to potential sanctions, ranging from monetary penalties to other remedial measures.
The court cited several examples of courts addressing this problem, including Fletcher v. Experian Information Solutions, Inc., 168 F.4th 231 (5th Cir. 2026), and other Florida decisions that have sanctioned parties for citing fictional cases and unverified AI-generated content in appellate filings.
Key Takeaways
- Generative AI can produce false citations and misquoted legal authorities that appear authentic—a risk that is difficult for courts to immediately detect.
- Pro se litigants must independently verify all legal authorities and citations generated by AI before filing briefs or other court documents.
- Signatories to court filings are held responsible for the accuracy of cited legal authorities under Florida court rules, regardless of whether AI was used to generate the content.
- Use of unverified AI-generated legal briefs exposes litigants to sanctions, including monetary penalties and other disciplinary measures.
Why It Matters
This decision reflects growing judicial concern about the risks of generative AI in legal practice. As AI tools become more accessible to pro se litigants and legal professionals, courts are increasingly encountering briefs containing fabricated citations and misquoted legal authorities. This opinion serves as a direct warning that the convenience of AI-generated legal research comes with the obligation to verify accuracy—a burden that falls on the filer, not the court.
For attorneys and pro se litigants alike, the decision underscores that reliance on generative AI without validation constitutes a breach of professional responsibility and court rules. The court’s caution is particularly significant because it addresses both represented and unrepresented parties, indicating that all users of AI in legal writing face potential sanctions if they fail to verify their sources before filing.