While the previous answers are factually correct they are not very helpful.


Let's clear what you wnat to do.
What you want to generate? video or images?
Do you want to do in on cloud or on your local machine?

In steps.

Video on cloud. Your best option is grok. You can generate for free with an email. Quite good, only partially censored.

Video local. Wan 2.2 with specific LORA. I have no experience with . You will find more info on civitAI.

Image Cloud. Your best best is NovelAI. I have not tried it, so I cannot comment. You will need to pay.

Image local. THe most popular one as it has NO censorship whatsoever.
Stable diffusion is a family of models you can run. ComfyUI mentioned by other people is the software that allows you to run a model.