Do you mean via web app or API? I had no idea you could set the temperature in ChatGPT, I thought you could only do that via the API.

When I google that, I see some articles stating it's possible. But when I add "Set temperature to .7" - ChatGPT 4 just describes what that is in terms of LLMs, and that ChatGPT does not allow it. I tried ChatGPT classic as well.