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.