Last night I entered the page-long instructions for Advent of Code day 4, and it spewed out perfectly readable code and solved it on the first try [1]. And we're not talking about a common algorithm that has been solved many times before, but a convoluted story that is full of "elves cleaning up overlapping sections of the camp" (!), and ChatGPT was still able to understand it, write the code to solve it, and even explain how it works.
It's nothing short of a phenomenal milestone.
[1] https://twitter.com/GuiAmbros/status/1599282083838296064