Anecdotally, I experimented GPT-5.4 xhigh and something about the code it wrote just didn't vibe with me.

It felt like I constantly have to go back and either fix things or I just didn't like the results. Like the forward momentum/progress on my projects overally wasn't there over time. Even with tho its cheaper it just doesn't feel worth it, to the point I start to feel negative emotions.

I'm actually a bit worried that I've somehow become to feel more negative emotions with agentic coding. Quicker to feel frustrated somehow when things aren't working.