An always-up-to-date page linked from the front page that lists current production (and maybe separate for beta?) models, open source model they’re based on, context and other pertinent data.
Currently, as far as I can tell, this kind of information isn’t available in any single place. Trolling through multiple change logs, FAQs, and blog posts is unnecessarily effortful and leaves one with an incomplete picture.
Another request, “Active model comparison chart” would likely include this basic info but this would be a simpler place to start. Additionally, it could give a home to add the comparisons suggested in that request as the dropdown might not be a realistic home for so much info.