Free Stem Splitter by Colossal

Is this tool free?<svg xmlns="http://www.w3.org/2000/svg" width="21" height="22" fill="none" class="AccordionChevron" aria-hidden="true">

How many files can I upload<svg xmlns="http://www.w3.org/2000/svg" width="21" height="22" fill="none" class="AccordionChevron" aria-hidden="true">

What AI model do you use to split STEMS?<svg xmlns="http://www.w3.org/2000/svg" width="21" height="22" fill="none" class="AccordionChevron" aria-hidden="true">