There are a lot of them, but Runway seems to have good controls and they are aligned with people who will actually use it - filmmakers and content creators.

In terms of image quality. Runway, Luma, and a few of the Chinese models all give "ok" results. I haven't seen anything from Sora to convince me they have done any kind of significant leap.

The issue there is alignment. It's cheap for Runway or Luma to continue in this path since it's their only path to profitability, they do nothing else.

But for OpenAI, I don't think this is near their top list of priorities. I doubt that they will be able to keep adding features like their competitors. Seems to me like this is the equivalent of a side project for them.

edit after watching direct comparison videos, I've changed my mind. Sora is ahead.