My Cousin Vinny is probably the best courtroom movie ever made. In a sea of self-serious courtroom dramas, somehow it’s the comedy movie that isn’t making lawyers cringe with every inaccuracy. Law professors show clips as part of their lessons. Federal judges cite it in opinions. It won our ATL March Madness bracket for greatest work of legal fiction of all time.
Vinny Gambini did not have access to the modern wonders of legal tech, though I would pay to watch a sequel where he systematically demolishes a prosecutor caught citing AI hallucinations.
But real lawyers do have to understand the legal tech, and Litera came up with a fun way to show off their latest document comparison tool. Instead of redlining a bunch of boilerplate fake contracts, the company promised to show me the latest version of Litera Compare running the October 1990 draft screenplay of My Cousin Vinny against the final 1992 shooting script. I get a lot of press releases and marketing pitches in this job, and rarely have I smashed the “reply” button faster than this.
It’s 2026, so you’re probably asking if this has anything to do with AI. Well, of course it does. But unlike products trying to ram AI into every feature, Litera Compare embraces AI’s limitations. Have you seen any of these AI calculator apps that spin for 10 seconds before giving the answer your phone can calculate instantly? It turns out redlining documents are a lot like math and AI isn’t particularly good at consistently and accurately comparing versions. Litera just released a benchmarking report pitting Litera Compare against Gemini 3, Claude 4.5 Opus, and ChatGPT 5.2 on complex legal document comparison tasks. On a 53-page document, the LLMs managed text-only accuracy in the 85-90 percent range. On a 200-page document, ChatGPT dropped to roughly 40 percent accuracy. Claude and Gemini fell to about 70 percent. And those numbers only measure text changes — the LLMs scored effectively zero on tables, images, embedded objects, headers, footers, and footnotes.
Litera, on the other hand, employs its tried-and-true, rules-based comparison technology — refined over years and years of experience — to perform the redline. Litera Compare hit 100 percent across every test. The lesson, as always, is don’t do legal work with raw, consumer-grade LLMs.
And then Litera brings AI in to do the stuff it’s actually good at.
Lito, Litera’s AI tool, allows the lawyer to interrogate the redline to easily pull out the key takeaways. The AI may not be good at comparisons, but it’s very good at taking two comparisons and identifying major substantive changes or answering a query about what happened with a specific concept. When comparing hundreds of pages worth of an agreement, that’s essential. And, in case you’re wondering, Lito provides access to multiple AI algorithms allowing the user to select their preferred model with a dropdown menu.
So what did Litera Compare and Lito discover in the My Cousin Vinny script?
Most Hollywood legal fiction gets dumber as it moves through the studio process. Somebody in a suit decides that audiences might be able to handle the truth, but definitely cannot handle realistic trial procedure. Procedural subplots get cut and the whole case boils down to a combative cross-examination and a few “OBJECTION!” scenes for flavor. My Cousin Vinny went the other direction.
The comparison shows that the shooting script systematically upgraded the legal procedure from the earlier draft. Having performed the comparison with Litera Compare, Lito is prompted “What are the 5 most significant changes in legal and procedural accuracy between the two scripts, compared side by side?” As one example, in the earlier draft, discovery is mentioned briefly, but anyone who’s seen the film knows that this blows up into a key story beat with Lisa actually doing the basic legal research Vinny hasn’t and calling him out for not realizing that the prosecution is required hand it over. It’s a turning point for Vinny figuring out that he can’t keep half-assing the case. And it sets up the later trial objection to the prosecution’s surprise expert witness.
In another difference, Vinny originally just hands Lisa the tire tracks photo during her testimony. The final version has Vinny go through the steps to properly admit the photo, first identifying the photograph as one “my fiancée took outside the Sac-o-Suds,” asking the prosecutor if they can “agree on this,” getting the stipulation (“Yes”), and then formally moving to “submit this photograph of the tire marks as evidence.” The judge even looks to the prosecution at this point, and Trotter says “No objection.” This exchange doesn’t advance the plot or even add much comedy, but it’s more real. And unlike most movies, the script trusts the audience to pick up on the authenticity of this authentication.
Screenwriter Dale Launer came up with the idea for My Cousin Vinny after hearing a story about a lawyer who finally passed the bar on the 13th attempt. Years later, he developed it into an early draft, but kept refining it through multiple in-depth interviews with a real litigator. And it shows up in the comparison. Over and over, the final draft is a sharper reflection of real trial procedure than the original.
Litera also just announced a partnership with AI-powered legal research platform Midpage. So Lito can also answer questions about the legal research in the script. Prompted with “Using Midpage, assess the accuracy of the case law referenced in this scene,” Lito and Midpage report back about the disclosure scene:
Prosecutorial Disclosure — Lisa’s “It’s Called Disclosure, You Dickhead”
The Scene: Lisa reads the Alabama Rules of Criminal Procedure and tells Vinny that Trotter is required by law to share his files, his witness list, and that he’s “not allowed any surprises.”
The Law: The constitutional foundation for this is Brady v. Maryland, 373 U.S. 83 (1963), which held that “the suppression by the prosecution of evidence favorable to an accused upon request violates due process where the evidence is material either to guilt or to punishment, irrespective of the good faith or bad faith of the prosecution.” The Supreme Court later expanded this in Kyles v. Whitley, 514
U.S. 419 (1995), holding that “the individual prosecutor has a duty to learn of any favorable evidence known to the others acting on the government’s behalf in the case, including the police.”
Accuracy Verdict: Mostly accurate, but slightly overstated. Lisa’s statement that Trotter “has to show you everything” goes further than the constitutional floor. Brady requires disclosure of material evidence favorable to the defense—not literally “everything.” However, the film is set in Alabama, and state discovery rules can be broader than the constitutional minimum. Interestingly, Alabama’s own rules actually cut the other direction on witness lists: the Alabama Supreme Court held in State v. Fowler, 32 So. 3d 21 (Ala. 2009) that under Rule 16.1 of the Alabama Rules of Criminal Procedure, “the defendant shall not be permitted to discover or to inspect reports, memoranda, witness lists, or other internal state/municipality documents.” So Lisa’s claim that Trotter must provide a witness list is actually wrong under Alabama law—though it makes for better drama and reflects the general spirit of fair-play disclosure obligations.
The Midpage partnership allows users to check whether an agreement complies with a particular statute or generate a case summary without leaving Word or Outlook. It’s the kind of practical, workflow-embedded tool that actually matters to lawyers — as opposed to the “agentic AI will revolutionize everything” hand-waving that goes on at conferences.
A lot like the film, getting more specific and detailed makes the final product better.
Joe Patrice is a senior editor at Above the Law and co-host of Thinking Like A Lawyer. Feel free to email any tips, questions, or comments. Follow him on Twitter or Bluesky if you’re interested in law, politics, and a healthy dose of college sports news. Joe also serves as a Managing Director at RPN Executive Search.
The post ‘My Cousin Vinny’ Script Actually Got More Accurate As It Went To The Screen (And Litera Can Prove It) appeared first on Above the Law.