LLMs perhaps (I'm not sure either way, everything moves too quickly), but SDXL 1.0 (July 26, 2023) was a lot better than DALL•E 2 (6 April, 2022). I think DALL•E 3 (August 10, 2023) is a bit better than SDXL, but other than text generation their quality seems very close to me.

(That said, perhaps I'm Clever Hands-ing myself by only using SDXL for what it's good at. It's terrible at dragons every time I've tried that…)