Custom GPT Post limit is Smaller than ChatGPT

I’ve been noticing that the post limit on custom gpt’s is smaller than on Chat GPT. I’d estimate it’s about half. It says you’ve reached the limit. I’ve gone to other GPT4 threads and I’m definitely able to continue using, usually for about double, though they may be completely separate. Any one else notice this? If it’s the case, no big deal, I’m sure there’s issues with custom ones compared to their own, but it’d be nice to know.