Honestly, I sometimes use heavy thinking models only to avoid wasting tokens on my expensive pro plans. In many cases, I prefer using quicker models to discuss something, gain better ideas about the topic, do "my own research" using Google, then discuss again. ChatGPT Pro mode is helpful, but it's too slow, and I have no idea what they say is true (even with sources) or I'm familiar with the topic so I can research faster myself.

I use coding agents often, but I don't burn all the tokens out of my Claude Max plan and ChatGPT Business plan with two seats.