Does an article spinner exist that has an unlimited API?

I've checked out many of the popular article spinners that have an API such as spinner chief, spinrewriter, wordai, content professor, and a few others. All of them have restrictions on their API. Does anyone know of a product out there that offers unlimited article spinning through an API for a one time or fixed monthly fee?

I've not seen any spinner that does support unlimited api queries, so I think it'd be best to contact with the developers of your selected one spinner and talk about it if they allow or increase the maximum limit for you.