I was chatting with someone I know that has a paid subscription for ChatGPT 4. I was venting about the hallucinations I was getting for a certain problem; they

I was chatting with someone I know that has a paid subscription for ChatGPT 4. I was venting about the hallucinations I was getting for a certain problem; they mentioned how much better v4 is, and proceeded to plug my prompt into it. The answer it gave was actually a more blatant lie compared to the responses I got from v3.5.