The Base Program in version 6.12 was not "basic" by any means. It included:
If you're interested in using Mplus, consider: Mplus 6.12 Base Program and Combination Add-on setup free
: Available for free on the official website. The Base Program in version 6
. While the software can be obtained "at no cost" in very specific scenarios—such as for users with a current support contract—it remains a paid product for new users. Mplus Home Page Software Status and Accessibility Commercial Nature : Mplus is proprietary software. The Base Program and Combination Add-On Mplus 6.12 Base Program and Combination Add-on setup free