Thank you for the answer, but is not really enough, the problem I have is that I cannot disclose the requirements or the project. a trial version, will not allow what we need, the other 2 have limitations exactly in what I need. so I was asking myself if there was a key or license that could be asked to have a non-productive environment. In a post of 2018 someone asked about a Splunk Enterprise Term non-production license, And I will like to know if some solution like that is still available.
You shouldn't need to disclose anything about the project other than the number of GB you need for the license. Your Account Team should be able to tell you what license options are available.