Pure anecdata, of course, but my impression so far was the opposite (same as with Gemini): The free version is so bad for me (gpt4o) that I really doubt the paid version can get meaningfully better.
* Text generation is really bad if said text is more niche than typical SEO stuff like "give me 300 words about soccer balls". Anything academic is usually wrong (i.e. full of hallucinations) or lacks/hallucinates proper sources. If I have to check everything anyway I can just use a search engine.
* Image generation is really bad if you don't just want deviantart-like content. Just yesterday I tried generating ideas for visualisations of a few topics (with quite a view different prompt approaches) and they almost all were unusable.
It is good at summing up longform content, though, but then again so am I - and I have to read it anyway to confirm there are no hallucinations...
Obviously many people use it for coding (which appears to be the low hanging fruit because code is so heavily formalized), but I can imagine that market is almost saturated by now.