This is not because the models are better. These services have unknown and opaque levels of shadow prompting[1] to tweak the behavior. The subject article even mentions "tweaking their outputs to the liking of whoever pays the most". The more I play with LLMs locally, the more I realize how much prompting going on under the covers is shaping the results from the big tech services.

1 https://www.techpolicy.press/shining-a-light-on-shadow-promp...