I feel like I focus on the version numbers and Flash label for Gemini more than the attached cutesey codenames.

4 > 3.8 > 3.1 > 3.0

Unless you put Flash onto it, which denotes a lower cost version.

It seems like Carbon is a drop in replacement for Argon (same price). They can keep using random cutesey names as long as the version number + Flash naming scheme keeps making sense. Feels Android-y to me.

Someone in some previous thread tried to summarize, e.g. "Sol < Astra, except when 6.1 Sol which is more that current Astra, but Terra 6.1 > Sol latest, and..."

So no, OAI scheme is also confusing as hell. And they are going to add even more confusion when they release presumably Nova.

Argon is gas, and Carbon is a solid? But I don't see an obvious progression afterwards