Florida Supreme Court's New Rule Targets AI Hallucinations in Court Filings

A new Florida Supreme Court rule that took effect on June 15, 2026, now requires the person who signs any document filed in any Florida court to represent that the legal authorities identified in the filing actually exist and are accurately cited. The amendment is a direct response to a wave of court filings nationwide that contained fabricated case citations generated by artificial intelligence tools, and it puts Florida among the states moving to police the use of generative AI in legal practice.

The rule is deceptively simple. It does not ban lawyers or self-represented litigants from using AI tools to draft or research filings. Instead, it places the responsibility for verifying that cited cases and authorities are real squarely on the human who signs the document. The signer must certify that the authorities exist and that they are accurately cited, a representation that carries the weight of a court rule and the professional consequences that come with violating one.

For Florida's courts, lawyers, and the growing number of residents who represent themselves, the change formalizes a basic expectation that had been quietly upended by the rapid spread of AI writing tools. The technology can produce fluent, confident text that includes citations to cases that were never decided, a phenomenon that has embarrassed attorneys and burdened judges across the country.

What the rule requires

The amended rule applies broadly to documents filed in any Florida court, not just to a single court level or practice area. Whoever signs a filing must affirmatively represent that the legal authorities identified in it exist and are accurately cited. That representation becomes part of the filing itself, meaning a signer who certifies to fabricated authorities has made a false representation to the court.

The requirement closes a gap that the arrival of generative AI exposed. Court rules have long required filings to be made in good faith and have given judges tools to sanction frivolous or misleading submissions. But the specific problem of AI-generated citations to nonexistent cases did not fit neatly into older frameworks, which assumed that a citation, even a wrong one, pointed to a real decision. The new rule speaks directly to the modern failure mode in which a citation points to nothing at all.

By framing the obligation as a representation rather than an outright prohibition on AI, the court preserved flexibility for practitioners who use the technology responsibly. A lawyer can still ask an AI tool to draft an argument or surface relevant precedent, but the lawyer must then confirm that every cited authority is genuine before signing. The rule effectively makes verification a non-negotiable step rather than an optional best practice.

Why the court acted

The rule responds to a problem that has surfaced repeatedly since powerful AI writing tools became widely available. Large language models can generate text that reads like competent legal writing, complete with case names, citations, and quotations. But these tools sometimes invent authorities that sound plausible and do not exist, a failure that practitioners and judges have come to call a hallucination.

Courts in multiple jurisdictions have encountered filings containing fabricated citations, leading to embarrassed apologies, sanctions, and in some cases referrals to bar disciplinary authorities. Judges have described the burden of discovering that the cases cited in a brief cannot be found, a discovery that wastes court time and undermines confidence in the filings before them. Florida's rule is an attempt to address the problem at the source by reinforcing the signer's duty to verify.

The timing reflects how quickly the issue has moved from novelty to recurring concern. What began as isolated incidents has become a pattern serious enough for a state supreme court to amend its rules of procedure. Florida joins a broader national conversation among courts and bar associations about how to integrate AI into legal work without sacrificing the accuracy that the justice system depends on.

What it means for Florida lawyers

For practicing attorneys in Florida, the rule reinforces an obligation that already existed in spirit but now carries explicit force. Lawyers have always been responsible for the accuracy of their filings, and citing a nonexistent case has always been a problem. The new rule removes any ambiguity by requiring an affirmative representation, which means a lawyer who relies on unverified AI output does so at clear professional peril.

The practical effect is likely to be a renewed emphasis on verification workflows in law firms and solo practices. Attorneys who use AI tools for research or drafting will need to confirm each citation against a reliable legal database before filing. Many firms had already adopted such practices informally after early high-profile incidents, but the rule turns a recommended habit into a court requirement backed by the threat of sanctions.

The change also has implications for how firms train younger lawyers and staff. As AI tools become a routine part of legal work, the discipline of checking machine-generated citations becomes a core competency rather than an afterthought. The rule gives supervising attorneys a clear standard to enforce and a clear basis for insisting that no filing leaves the office without verified authorities.

What it means for self-represented Floridians

Florida, like many states, has a large and growing population of residents who navigate the court system without a lawyer, particularly in family law, small claims, and landlord-tenant matters. These self-represented litigants are among the most likely to turn to free or low-cost AI tools for help drafting documents, and they may be the least equipped to recognize when an AI tool has invented a citation.

The rule applies to them as well, which means a self-represented person who files a document with fabricated authorities has made the same false representation that a lawyer would. That raises the stakes for residents who may not realize that the confident legal language an AI tool produces can include references to cases that do not exist. Courts and legal aid organizations may need to expand their guidance to help self-represented litigants understand the risk.

At the same time, the rule does not penalize people for using AI to understand the law or to draft in plain language. It targets the specific harm of submitting false citations. A resident who uses an AI tool to organize an argument and then files only verified, real authorities remains in compliance. The challenge is helping non-lawyers understand where the line falls.

The broader push to govern AI in the courts

Florida's rule is one piece of a wider effort by courts and legal institutions to set ground rules for artificial intelligence. Across the country, judges have issued standing orders requiring disclosure of AI use, bar associations have published ethics guidance, and law schools have added instruction on the responsible use of the technology. The common thread is an insistence that human professionals remain accountable for the accuracy of what they submit.

The Florida approach is notable for placing the obligation on the signer rather than mandating disclosure of whether AI was used at all. That framing sidesteps debates about how to detect or prove AI involvement and instead focuses on the outcome that matters to the court, which is whether the cited authorities are real and accurate. It is a pragmatic response that targets the harm rather than the tool.

As AI capabilities continue to advance, courts will likely keep refining their rules. The technology is improving, and some legal research tools now incorporate safeguards designed to reduce fabricated citations. But the underlying principle that a human must stand behind the accuracy of a filing is unlikely to change, and Florida's rule entrenches that principle for the AI era.

What's next

With the rule now in effect, the immediate question is enforcement. Judges across Florida will be applying the requirement as filings come in, and the first cases in which a signer is found to have certified fabricated authorities will set the tone for how seriously the courts treat violations. Sanctions, fee awards, and disciplinary referrals are all possible consequences, and early cases will signal where the courts draw the line.

Legal organizations and continuing education providers are likely to incorporate the rule into their training, ensuring that practitioners understand the new standard. Bar guidance and practice resources will help lawyers build verification into their routines, and courts may publish additional materials aimed at self-represented litigants who are most at risk of unknowingly running afoul of the requirement.

For Floridians who interact with the court system, the takeaway is straightforward. The convenience of AI writing tools does not relieve anyone of the duty to ensure that what they file is true. The rule reaffirms a basic expectation of the justice system, that the authorities a court is asked to rely on actually exist, and adapts that expectation to a technology that has made the question newly urgent.