Is there a comparison? It is interesting that there do not seem to be any Midjourney benchmarks. E.g.

https://paperswithcode.com/sota/text-to-image-generation-on-...

Parti and Imagen are still on top, followed by Dall-E 2.

If their model is so great, why are they afraid of benchmarks?

I literally just don't feel like running them tbh, and see no reason to publish them either way. Mostly prefer to let the outputs speak for themselves.

For a while I was using an FID variant for evaluation during training, but didn't find it very helpful vs just looking at output images.

Okay. That's probably the difference between a commercial and a research project.