GPT 6 removed from website?

A user on reddit.com reported that GPT 6 has been removed from chatgpt.com. They noticed their previously set "thinking speed" for GPT 6 was reset to medium, and upon checking the drop-down menu, GPT 6 was no longer an option. The user inquired if others were experiencing the same issue, suggesting a potential unannounced removal of the model from the platform.