  The 2023 AI4EIC hackathon was the culmination of the third annual AI4EIC
workshop at The Catholic University of America. This workshop brought together
researchers from physics, data science and computer science to discuss the
latest developments in Artificial Intelligence (AI) and Machine Learning (ML)
for the Electron Ion Collider (EIC), including applications for detectors,
accelerators, and experimental control. The hackathon, held on the final day of
the workshop, involved using a chatbot powered by a Large Language Model,
ChatGPT-3.5, to train a binary classifier neutrons and photons in simulated
data from the \textsc{GlueX} Barrel Calorimeter. In total, six teams of up to
four participants from all over the world took part in this intense educational
and research event. This article highlights the hackathon challenge, the
resources and methodology used, and the results and insights gained from
analyzing physics data using the most cutting-edge tools in AI/ML.
