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.
You can do more than 16 videos for free on Kling per month. Let alone with their price plans. I'm sure it's not equivalent in capability, but all these models suffer from the same technical issues understanding prompts and maintaining physics / temporal coherence anyway.
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.