University of Pennsylvania is offering a fully online undergraduate degree program.

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I have taken nearly all of the Sophia courses, and am currently working my way through the ASU EA library. Generally, I'd say that ASU EA is significantly more rigorous than Sophia. I often completed one or more entire Sophia courses in a single day. All of that information left my brain almost as soon as it entered. Sophia was really more of a challenge for my multiple choice testing and text skimming skills than actual content understanding. While I am grateful for the kickstart it provided to my college experience, I don't think that I will actually end up using very many of my Sophia credits.

Even within Sophia, there is some variation. I found the Human Biology course a fantastic overview and introduction that even now, a year after I took it, I find myself able to grasp higher-level info because of something I remembered from that course.
US History I, meanwhile, I recall zero. It was more an endurance test just to get it over as soon as possible.

Sophia does many Gen Eds well (and a few, not so well), and for the price, it's almost unparalleled. Back when ASU EA was $99 a class, it was an unbeatable option. I can be a lot more forgiving of Sophia having a few crappy courses, than I can of a $5000 course. Even at $425, I still expect some basic rigor (in my country, this is slightly less than a minimum wage, so I'm sacrificing a fair bit when I send that much to ASU).