When GPT-4 launched in March 2023, results were again impressive. As with its predecessors, you can ask GPT-4 to compose poetry in the style of Emily Dickinson and it obliges; ask it to pick up from a random snippet of The Lord of the Rings and you are suddenly reading a plausible imitation of Tolkien; request start-up business plans and the output is akin to having a roomful of executives on call. Moreover, it can ace standardized tests from the bar exam to the GRE. It can also work with images and code, create 3-D computer games that run in desktop browsers, build smartphone apps, debug your
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