alt Hacker NewsWow they're watermarking videos and limiting them to 720 at the 20 dollar price point? That's a bold move, considering their competition's pricing...
https://www.klingai.com/membership/membership-plan
Quality seems relatively similar based on the samples I've seen. With the same issues - object permanence, temporal stability, physics comprehension etc, being present in both. Kling has no qualms about copyright violation however.
At OpenAI's $20/mo price point, you can also only generate 16 720p 5s videos per month.
Kling doesn't seem to have more granular information publically but I suspect it allows for more than 16 videos per month.