That's ...not good.
GPTx gets alot of surface topics right but when you delve into gritty specific details it will just start rambling like a straight jacket lunatic with the confidence of a used car salesman. The rubber meets the road when i try to compile code that uses libraries or functions that don't exist or it leads me to hallucinated imaginary github repos. I worry that this use of GPTx would be like getting water from lead pipes: it would seem fine on the day-to-day while my mind is slowly poisoned with nonsense and insanity.
Google has certainly taken a nosedive in result quality for sure the last few years but Kagi has been amazing for me lately.