Argentina: appeal chamber annulled a robbery judgment after the judge left a generative-AI chat phrase in it; Chubut's high court revoked the annulment
On 4 June 2025 a criminal judge in Esquel, Chubut province, convicted a defendant of simple robbery and imposed two years and six months of effective imprisonment. On 15 October 2025 the Penal Chamber of Esquel annulled the judgment and the trial, ordering a new trial before another judge. The chamber found that the ruling contained a pasted phrase from a generative-AI assistant (“Aquí tienes el punto IV reeditado, sin citas y listo para copiar y pegar”), that the AI had been used on the rulings on the nullity of two essential pieces of evidence, and that the judge had not exercised human supervision or recorded the use. Perfil's headline describes the assistant as ChatGPT and La Nación's text as presumably ChatGPT; the quoted ruling and the prosecution office statement refer only to a generative-AI assistant. The chamber referred the judge's conduct to the Chubut Superior Court of Justice for ethical and disciplinary review. On 13 March 2026 the Chubut Superior Court of Justice, ruling on a complaint appeal by the case's prosecutors, revoked the annulment, holding that a judge's use of support tools, technological or not, does not by itself invalidate a judgment without a concrete prejudice to the parties, and returned the case to the Esquel chamber, with a different composition, to hear the defence's appeal against the conviction (Revista Quórum, Clarín, Diario Judicial).
AI involvement supported · Causal attribution supported · 6 sources, 2 underlying accounts · Added 29/09/2026