I can understand why they might make changes to ChatGPT, but it seems weird they would "nerf" the API. What would be the incentive for OpenAI to do that?
The API though? That's mostly used by technical people and has the capability (supposedly) of querying different model versions, including the original GPT4 public release.
I work with temperature 0 which should have low variability yet recently it shifted to feel boring, wooden, and deflective.