Are you referring to bulk content generation or scheduling?
For content, there are plenty of tools for that, including software, wp plugins, custom scripts, etc...
It really depends on the type of website and content included,
Some niches/languages would need way better quality or/and a special approach for the content,
Most people are either using copied, AI (different models, prompts, fine-tuned models, etc..), a mix of both, or some unique way/script to get things done,
If you want just to schedule the pages, you can just use WP or some plugins for more options