At what stages will models start to internally reflect the drawn SVG and automatically fix their own mistakes?

I assume multimodal models can do it already do it today if constantly asked "make it better"

I haven't tried this in a few months, but last time I tried a loop that rendered the pelican and asked for improvements the results were actually quite disappointing. Be interesting to try that again against GPT-5.6 at Claude Fable 5 though.