API Upload Size Limit

Im using the API call to upload a data set. I am able to get files to post but when I try to upload a bigger data set it gives me an error “413 Request Entity Too Large”.
My file is one column 121043 rows long.

What is the limit on how big of a file or how many records you can upload?

Bumping this as I would love a resolution.
I found a previous convo where it was said you should be able to upload at least 10mb the file its stopping me from uploading is only 2.5mb