I believe so. With Pro you get “Thinking” with levels Light, Standard, Extended, and Heavy; and you also get the “Pro” model with levels “Standard” and “Extended”.
I don’t often go to Pro as it does take a while like you saw here, but I do often use Thinking Heavy for high quality answers.
Idk why, but i just get consistently worse results with Gemini (Gemini pro), where it’s just much lazier, eg won’t do actual searches unless explicitly told.