Replacing Attorney Review? Sidley’s Experimental Assessment of GPT-4’s Performance in Document Review

ChatGPT by OpenAI came crashing into the world on November 30, 2022, and quickly captured everyone’s imagination, including that of businesses and lawyers eager to capitalize on the many ways artificial intelligence (AI) has been predicted to fundamentally change the way business is done, including how law is practiced. In this article, we offer a quantifiable look at whether GPT-4 is likely to live up to these expectations in the legal context and, more specifically, as it relates to document review in e-discovery.

ChatGPT is a large language, generative AI model, which means it can absorb a large quantity of written information and then generate new, original content after receiving a prompt from the user. ChatGPT is particularly interesting for legal practitioners because its generative capabilities have the potential to both alter and enhance attorneys’ current practices. For example, most in the legal community have heard by now the cautionary tale of lawyers who tried unsuccessfully to use ChatGPT to write legal briefs and were subsequently sanctioned by a federal district court. But that mishap certainly does not seal ChatGPT’s fate in the legal field; rather, it is an unfortunate example of the inexperienced use of a new technology without developing an understanding of its strengths and weaknesses.

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