>>402684993
I believe that open source will catch up eventually,
but WD 1.4 will be trained on 2 million images only, while NAI already is trained on 6 million.

And 1.4 is still many months away, even 1.3 is only about to be released next week (with 600k images only). More doesn't necessarily mean better, but specifically right now it obviously does. For the foreseeable future, NAI will be the top anime girl generator.