Has anyone else noticed ChatGPT switching from 5.4 to 5.2 without asking?

Lately I’ve noticed ChatGPT sometimes switches from 5.4 to 5.2 in the middle of a chat, even though the conversation was originally set to 5.4 and the previous replies were clearly using 5.4. The only reason I caught it is because the quality of the answers suddenly dropped, and then I checked and saw it had switched models on its own. Has this happened to anyone else? Is this a bug, a usage limit thing, or some kind of automatic fallback? And is there any way to stop it from happening? submitted by /u/Tetra_grammatton [link] [comments.